This document provides an introduction to knowledge representation in artificial intelligence. It discusses how knowledge representation and reasoning forms the basis of intelligent behavior through computational means. The key types of knowledge that need to be represented are defined, including objects, events, facts, and meta-knowledge. Different types of knowledge such as declarative, procedural, structural and heuristic knowledge are explained. The importance of knowledge representation for modeling intelligent behavior in agents is highlighted. The requirements for effective knowledge representation including representational adequacy, inferential adequacy, inferential efficiency, and acquisitional efficiency are outlined. Propositional logic is introduced as the simplest form of logic using propositions.
This document provides an overview and introduction to the course "Knowledge Representation & Reasoning" taught by Ms. Jawairya Bukhari. It discusses the aims of developing skills in knowledge representation and reasoning using different representation methods. It outlines prerequisites like artificial intelligence, logic, and programming. Key topics covered include symbolic and non-symbolic knowledge representation methods, types of knowledge, languages for knowledge representation like propositional logic, and what knowledge representation encompasses.
Knowledge Representation in Artificial intelligence Yasir Khan
This document discusses different methods of knowledge representation in artificial intelligence, including logical representations, semantic networks, production rules, and frames. Logical representations use formal logics like propositional logic and first-order predicate logic to represent facts and relationships. Semantic networks represent knowledge graphically as nodes and edges to model concepts and their relationships. Production rules represent knowledge as condition-action pairs to model problem-solving. Frames represent stereotyped situations as templates with slots to model attributes and behaviors. Choosing the right knowledge representation method is important for building successful AI systems.
Knowledge representation In Artificial IntelligenceRamla Sheikh
facts, information, and skills acquired through experience or education; the theoretical or practical understanding of a subject.
Knowledge = information + rules
EXAMPLE
Doctors, managers.
The document discusses different types of knowledge that may need to be represented in AI systems, including objects, events, performance, and meta-knowledge. It also discusses representing knowledge at two levels: the knowledge level containing facts, and the symbol level containing representations of objects defined in terms of symbols. Common ways of representing knowledge mentioned include using English, logic, relations, semantic networks, frames, and rules. The document also discusses using knowledge for applications like learning, reasoning, and different approaches to machine learning such as skill refinement, knowledge acquisition, taking advice, problem solving, induction, discovery, and analogy.
Neural networks can be used for machine learning tasks like classification. They consist of interconnected nodes that update their weight values during a training process using examples. Neural networks have been applied successfully to tasks like handwritten character recognition, autonomous vehicle control by observing human drivers, and text-to-speech pronunciation generation. Their architecture is inspired by the human brain but neural networks are trained using computational methods while the brain uses biological processes.
Artificial intelligence and knowledge representationSajan Sahu
The document discusses artificial intelligence and knowledge representation. It describes how computers can be made intelligent through speed of computation, filtering responses, using algorithms and neural networks. It also discusses knowledge representation techniques in AI like propositional logic, semantic networks, frames, predicate logic and nonmonotonic reasoning. The document provides examples and applications of AI like pattern recognition, robotics and natural language processing. It also discusses some fundamental problems of AI.
This document outlines a presentation on knowledge representation. It begins with an introduction to propositional logic, including its syntax, semantics, and properties. Several inference methods for propositional logic are discussed, including truth tables, deductive systems, and resolution. Predicate logic and semantic networks are also mentioned as topics to be covered. The overall document provides an outline of the key concepts to be presented on knowledge representation using logic.
The document discusses sources and approaches to handling uncertainty in artificial intelligence. It provides examples of uncertain inputs, knowledge, and outputs in AI systems. Common methods for representing and reasoning with uncertain data include probability, Bayesian belief networks, hidden Markov models, and temporal models. Effectively handling uncertainty through probability and inference allows AI to make rational decisions with imperfect knowledge.
This document provides an overview and introduction to the course "Knowledge Representation & Reasoning" taught by Ms. Jawairya Bukhari. It discusses the aims of developing skills in knowledge representation and reasoning using different representation methods. It outlines prerequisites like artificial intelligence, logic, and programming. Key topics covered include symbolic and non-symbolic knowledge representation methods, types of knowledge, languages for knowledge representation like propositional logic, and what knowledge representation encompasses.
Knowledge Representation in Artificial intelligence Yasir Khan
This document discusses different methods of knowledge representation in artificial intelligence, including logical representations, semantic networks, production rules, and frames. Logical representations use formal logics like propositional logic and first-order predicate logic to represent facts and relationships. Semantic networks represent knowledge graphically as nodes and edges to model concepts and their relationships. Production rules represent knowledge as condition-action pairs to model problem-solving. Frames represent stereotyped situations as templates with slots to model attributes and behaviors. Choosing the right knowledge representation method is important for building successful AI systems.
Knowledge representation In Artificial IntelligenceRamla Sheikh
facts, information, and skills acquired through experience or education; the theoretical or practical understanding of a subject.
Knowledge = information + rules
EXAMPLE
Doctors, managers.
The document discusses different types of knowledge that may need to be represented in AI systems, including objects, events, performance, and meta-knowledge. It also discusses representing knowledge at two levels: the knowledge level containing facts, and the symbol level containing representations of objects defined in terms of symbols. Common ways of representing knowledge mentioned include using English, logic, relations, semantic networks, frames, and rules. The document also discusses using knowledge for applications like learning, reasoning, and different approaches to machine learning such as skill refinement, knowledge acquisition, taking advice, problem solving, induction, discovery, and analogy.
Neural networks can be used for machine learning tasks like classification. They consist of interconnected nodes that update their weight values during a training process using examples. Neural networks have been applied successfully to tasks like handwritten character recognition, autonomous vehicle control by observing human drivers, and text-to-speech pronunciation generation. Their architecture is inspired by the human brain but neural networks are trained using computational methods while the brain uses biological processes.
Artificial intelligence and knowledge representationSajan Sahu
The document discusses artificial intelligence and knowledge representation. It describes how computers can be made intelligent through speed of computation, filtering responses, using algorithms and neural networks. It also discusses knowledge representation techniques in AI like propositional logic, semantic networks, frames, predicate logic and nonmonotonic reasoning. The document provides examples and applications of AI like pattern recognition, robotics and natural language processing. It also discusses some fundamental problems of AI.
This document outlines a presentation on knowledge representation. It begins with an introduction to propositional logic, including its syntax, semantics, and properties. Several inference methods for propositional logic are discussed, including truth tables, deductive systems, and resolution. Predicate logic and semantic networks are also mentioned as topics to be covered. The overall document provides an outline of the key concepts to be presented on knowledge representation using logic.
The document discusses sources and approaches to handling uncertainty in artificial intelligence. It provides examples of uncertain inputs, knowledge, and outputs in AI systems. Common methods for representing and reasoning with uncertain data include probability, Bayesian belief networks, hidden Markov models, and temporal models. Effectively handling uncertainty through probability and inference allows AI to make rational decisions with imperfect knowledge.
Reasoning is the process of deriving logical conclusions from facts or premises. There are several types of reasoning including deductive, inductive, abductive, analogical, and formal reasoning. Reasoning is a core component of artificial intelligence as AI systems must be able to reason about what they know to solve problems and draw new inferences. Formal logic provides the foundation for building reasoning systems through symbolic representations and inference rules.
The document describes logical agents and knowledge representation. It contains the following key points:
- Logical agents use knowledge representation and reasoning to solve problems and generate new knowledge. This enables intelligent behavior in partially observable environments.
- A knowledge-based agent's central component is its knowledge base, which contains sentences in a formal language that can be queried or added to.
- Wumpus World is described as an example environment, where the agent must navigate, avoid dangers, and find gold using limited sensory information and logical reasoning.
- Propositional and predicate logic are introduced as knowledge representation languages. Forward and backward chaining are also described as techniques for logical inference.
This document discusses natural language processing and language models. It begins by explaining that natural language processing aims to give computers the ability to process human language in order to perform tasks like dialogue systems, machine translation, and question answering. It then discusses how language models assign probabilities to strings of text to determine if they are valid sentences. Specifically, it covers n-gram models which use the previous n words to predict the next, and how smoothing techniques are used to handle uncommon words. The document provides an overview of key concepts in natural language processing and language modeling.
Artificial Intelligence: Introduction, Typical Applications. State Space Search: Depth Bounded
DFS, Depth First Iterative Deepening. Heuristic Search: Heuristic Functions, Best First Search,
Hill Climbing, Variable Neighborhood Descent, Beam Search, Tabu Search. Optimal Search: A
*
algorithm, Iterative Deepening A*
, Recursive Best First Search, Pruning the CLOSED and OPEN
Lists
This document discusses problem solving agents in artificial intelligence. It explains that problem solving agents focus on satisfying goals by formulating the goal based on the current situation, then formulating the problem by determining the actions needed to achieve the goal. Key components of problem formulation include the initial state, possible actions, transition model describing how actions change the state, a goal test, and path cost function. Two examples of well-defined problems are given: the 8-puzzle problem and the 8-queens problem.
Hill climbing is a heuristic search algorithm used to find optimal solutions to mathematical problems. It works by starting with an initial solution and iteratively moving to a neighboring solution that improves the value of an objective function until a local optimum is reached. However, hill climbing may not find the global optimum solution and can get stuck in local optima. Variants include simple hill climbing, steepest ascent hill climbing, and stochastic hill climbing.
Artificial Intelligence: Introduction, Typical Applications. State Space Search: Depth Bounded
DFS, Depth First Iterative Deepening. Heuristic Search: Heuristic Functions, Best First Search,
Hill Climbing, Variable Neighborhood Descent, Beam Search, Tabu Search. Optimal Search: A
*
algorithm, Iterative Deepening A*
, Recursive Best First Search, Pruning the CLOSED and OPEN
Lists
Soft computing is an approach to computing that aims to model human-like decision making. It deals with imprecise or uncertain data using techniques like fuzzy logic, neural networks, and genetic algorithms. The goal is to develop systems that are tolerant of imprecision, uncertainty, and approximation to achieve practical and low-cost solutions to real-world problems. Soft computing was initiated in 1981 and includes fields like fuzzy logic, neural networks, and evolutionary computation. It provides approximate solutions using techniques like neural network reasoning, genetic programming, and functional approximation.
Introduction Artificial Intelligence a modern approach by Russel and Norvig 1Garry D. Lasaga
This document provides an introduction to artificial intelligence. It discusses four views of AI: thinking like humans through cognitive modeling; acting like humans by passing the Turing test; thinking rationally through logical reasoning; and acting rationally by maximizing goals. The document also summarizes the history of AI from its foundations in philosophy, mathematics, and other fields to modern achievements like Deep Blue beating Kasparov at chess. It concludes with examples of state-of-the-art AI systems being used for logistics planning, spacecraft scheduling, and solving crossword puzzles.
Non-monotonic reasoning allows conclusions to be retracted when new information is introduced. It is used to model plausible reasoning where defaults may be overridden. For example, it is typically true that birds fly, so we could conclude that Tweety flies since Tweety is a bird. However, if we are later told Tweety is a penguin, we would retract the conclusion that Tweety flies since penguins do not fly despite being birds. Non-monotonic reasoning resolves inconsistencies by removing conclusions derived from default rules when specific countervailing information is received.
The document discusses different knowledge representation schemes used in artificial intelligence systems. It describes semantic networks, frames, propositional logic, first-order predicate logic, and rule-based systems. For each technique, it provides facts about how knowledge is represented and examples to illustrate their use. The goal of knowledge representation is to encode knowledge in a way that allows inferencing and learning of new knowledge from the facts stored in the knowledge base.
This document provides a high-level overview of the various fields that contribute to the foundations of artificial intelligence, including philosophy, mathematics, economics, neuroscience, psychology, computer engineering, control theory/cybernetics, and linguistics. For each field, it briefly describes the key questions or goals addressed in that area and highlights some important historical figures and developments that helped establish the foundations for modern AI research.
The document discusses different types of logical reasoning systems used in artificial intelligence, including knowledge-based agents, first-order logic, higher-order logic, goal-based agents, knowledge engineering, and description logics. It provides examples of objects, properties, relations, and functions that can be represented and reasoned about logically. It also compares different approaches to logical indexing and outlines the key components and inference tasks involved in description logics.
Problem solving
Problem formulation
Search Techniques for Artificial Intelligence
Classification of AI searching Strategies
What is Search strategy ?
Defining a Search Problem
State Space Graph versus Search Trees
Graph vs. Tree
Problem Solving by Search
The document describes the basic planning problem and representations used in early planning systems like STRIPS. The planning problem involves finding a sequence of actions or operators that will achieve a given goal state when starting from an initial state. STRIPS uses a state list to represent the current state and a goal stack to manage the planning search. It pops goals and subgoals off the stack and tries to achieve them by applying operators, updating the state list and solution plan along the way. Operators have preconditions that must be true for application and add and delete lists that modify the state.
The document discusses problem solving by searching. It describes problem solving agents and how they formulate goals and problems, search for solutions, and execute solutions. Tree search algorithms like breadth-first search, uniform-cost search, and depth-first search are described. Example problems discussed include the 8-puzzle, 8-queens, and route finding problems. The strategies of different uninformed search algorithms are explained.
The document discusses expert systems, which are computer programs that use artificial intelligence to solve complex problems that usually require human expertise. An example is a medical diagnosis expert system that allows a user to diagnose a disease without seeing a doctor. The key components of an expert system are the knowledge base, inference engine, and user interface. The knowledge base contains facts and rules acquired from human experts. The inference engine uses the rules to deduce conclusions. It can work forward or backward from the facts. The user interface allows interaction between the user and the system. The document provides examples of code for a medical diagnosis expert system and discusses some limitations of expert systems.
This document provides an overview of activation functions in deep learning. It discusses the purpose of activation functions, common types of activation functions like sigmoid, tanh, and ReLU, and issues like vanishing gradients that can occur with some activation functions. It explains that activation functions introduce non-linearity, allowing neural networks to learn complex patterns from data. The document also covers concepts like monotonicity, continuity, and differentiation properties that activation functions should have, as well as popular methods for updating weights during training like SGD, Adam, etc.
Knowledge representation is important for artificial intelligence as it allows computers to store real-world knowledge and use that knowledge to solve complex problems, similar to how humans use their experiences and training. There are different types of knowledge that can be represented, including declarative facts, procedural knowledge of how to perform tasks, and meta-knowledge about what is already known. Knowledge-based systems are a form of artificial intelligence that captures human expertise in a knowledge base and uses an inference engine to support decision making, as seen in early expert systems like MYCIN for medical diagnosis.
Unit 2 discusses knowledge representation, which is important for intelligent systems to achieve useful tasks. It cannot be done without a large amount of domain-specific knowledge. Humans tackle problems using their knowledge resources, so knowledge must be represented inside computers for AI programs to manipulate. The document then defines knowledge representation as the part of AI concerned with how agents think and how thinking enables intelligent behavior. It represents real-world information so computers can understand and utilize knowledge to solve complex problems.
Reasoning is the process of deriving logical conclusions from facts or premises. There are several types of reasoning including deductive, inductive, abductive, analogical, and formal reasoning. Reasoning is a core component of artificial intelligence as AI systems must be able to reason about what they know to solve problems and draw new inferences. Formal logic provides the foundation for building reasoning systems through symbolic representations and inference rules.
The document describes logical agents and knowledge representation. It contains the following key points:
- Logical agents use knowledge representation and reasoning to solve problems and generate new knowledge. This enables intelligent behavior in partially observable environments.
- A knowledge-based agent's central component is its knowledge base, which contains sentences in a formal language that can be queried or added to.
- Wumpus World is described as an example environment, where the agent must navigate, avoid dangers, and find gold using limited sensory information and logical reasoning.
- Propositional and predicate logic are introduced as knowledge representation languages. Forward and backward chaining are also described as techniques for logical inference.
This document discusses natural language processing and language models. It begins by explaining that natural language processing aims to give computers the ability to process human language in order to perform tasks like dialogue systems, machine translation, and question answering. It then discusses how language models assign probabilities to strings of text to determine if they are valid sentences. Specifically, it covers n-gram models which use the previous n words to predict the next, and how smoothing techniques are used to handle uncommon words. The document provides an overview of key concepts in natural language processing and language modeling.
Artificial Intelligence: Introduction, Typical Applications. State Space Search: Depth Bounded
DFS, Depth First Iterative Deepening. Heuristic Search: Heuristic Functions, Best First Search,
Hill Climbing, Variable Neighborhood Descent, Beam Search, Tabu Search. Optimal Search: A
*
algorithm, Iterative Deepening A*
, Recursive Best First Search, Pruning the CLOSED and OPEN
Lists
This document discusses problem solving agents in artificial intelligence. It explains that problem solving agents focus on satisfying goals by formulating the goal based on the current situation, then formulating the problem by determining the actions needed to achieve the goal. Key components of problem formulation include the initial state, possible actions, transition model describing how actions change the state, a goal test, and path cost function. Two examples of well-defined problems are given: the 8-puzzle problem and the 8-queens problem.
Hill climbing is a heuristic search algorithm used to find optimal solutions to mathematical problems. It works by starting with an initial solution and iteratively moving to a neighboring solution that improves the value of an objective function until a local optimum is reached. However, hill climbing may not find the global optimum solution and can get stuck in local optima. Variants include simple hill climbing, steepest ascent hill climbing, and stochastic hill climbing.
Artificial Intelligence: Introduction, Typical Applications. State Space Search: Depth Bounded
DFS, Depth First Iterative Deepening. Heuristic Search: Heuristic Functions, Best First Search,
Hill Climbing, Variable Neighborhood Descent, Beam Search, Tabu Search. Optimal Search: A
*
algorithm, Iterative Deepening A*
, Recursive Best First Search, Pruning the CLOSED and OPEN
Lists
Soft computing is an approach to computing that aims to model human-like decision making. It deals with imprecise or uncertain data using techniques like fuzzy logic, neural networks, and genetic algorithms. The goal is to develop systems that are tolerant of imprecision, uncertainty, and approximation to achieve practical and low-cost solutions to real-world problems. Soft computing was initiated in 1981 and includes fields like fuzzy logic, neural networks, and evolutionary computation. It provides approximate solutions using techniques like neural network reasoning, genetic programming, and functional approximation.
Introduction Artificial Intelligence a modern approach by Russel and Norvig 1Garry D. Lasaga
This document provides an introduction to artificial intelligence. It discusses four views of AI: thinking like humans through cognitive modeling; acting like humans by passing the Turing test; thinking rationally through logical reasoning; and acting rationally by maximizing goals. The document also summarizes the history of AI from its foundations in philosophy, mathematics, and other fields to modern achievements like Deep Blue beating Kasparov at chess. It concludes with examples of state-of-the-art AI systems being used for logistics planning, spacecraft scheduling, and solving crossword puzzles.
Non-monotonic reasoning allows conclusions to be retracted when new information is introduced. It is used to model plausible reasoning where defaults may be overridden. For example, it is typically true that birds fly, so we could conclude that Tweety flies since Tweety is a bird. However, if we are later told Tweety is a penguin, we would retract the conclusion that Tweety flies since penguins do not fly despite being birds. Non-monotonic reasoning resolves inconsistencies by removing conclusions derived from default rules when specific countervailing information is received.
The document discusses different knowledge representation schemes used in artificial intelligence systems. It describes semantic networks, frames, propositional logic, first-order predicate logic, and rule-based systems. For each technique, it provides facts about how knowledge is represented and examples to illustrate their use. The goal of knowledge representation is to encode knowledge in a way that allows inferencing and learning of new knowledge from the facts stored in the knowledge base.
This document provides a high-level overview of the various fields that contribute to the foundations of artificial intelligence, including philosophy, mathematics, economics, neuroscience, psychology, computer engineering, control theory/cybernetics, and linguistics. For each field, it briefly describes the key questions or goals addressed in that area and highlights some important historical figures and developments that helped establish the foundations for modern AI research.
The document discusses different types of logical reasoning systems used in artificial intelligence, including knowledge-based agents, first-order logic, higher-order logic, goal-based agents, knowledge engineering, and description logics. It provides examples of objects, properties, relations, and functions that can be represented and reasoned about logically. It also compares different approaches to logical indexing and outlines the key components and inference tasks involved in description logics.
Problem solving
Problem formulation
Search Techniques for Artificial Intelligence
Classification of AI searching Strategies
What is Search strategy ?
Defining a Search Problem
State Space Graph versus Search Trees
Graph vs. Tree
Problem Solving by Search
The document describes the basic planning problem and representations used in early planning systems like STRIPS. The planning problem involves finding a sequence of actions or operators that will achieve a given goal state when starting from an initial state. STRIPS uses a state list to represent the current state and a goal stack to manage the planning search. It pops goals and subgoals off the stack and tries to achieve them by applying operators, updating the state list and solution plan along the way. Operators have preconditions that must be true for application and add and delete lists that modify the state.
The document discusses problem solving by searching. It describes problem solving agents and how they formulate goals and problems, search for solutions, and execute solutions. Tree search algorithms like breadth-first search, uniform-cost search, and depth-first search are described. Example problems discussed include the 8-puzzle, 8-queens, and route finding problems. The strategies of different uninformed search algorithms are explained.
The document discusses expert systems, which are computer programs that use artificial intelligence to solve complex problems that usually require human expertise. An example is a medical diagnosis expert system that allows a user to diagnose a disease without seeing a doctor. The key components of an expert system are the knowledge base, inference engine, and user interface. The knowledge base contains facts and rules acquired from human experts. The inference engine uses the rules to deduce conclusions. It can work forward or backward from the facts. The user interface allows interaction between the user and the system. The document provides examples of code for a medical diagnosis expert system and discusses some limitations of expert systems.
This document provides an overview of activation functions in deep learning. It discusses the purpose of activation functions, common types of activation functions like sigmoid, tanh, and ReLU, and issues like vanishing gradients that can occur with some activation functions. It explains that activation functions introduce non-linearity, allowing neural networks to learn complex patterns from data. The document also covers concepts like monotonicity, continuity, and differentiation properties that activation functions should have, as well as popular methods for updating weights during training like SGD, Adam, etc.
Knowledge representation is important for artificial intelligence as it allows computers to store real-world knowledge and use that knowledge to solve complex problems, similar to how humans use their experiences and training. There are different types of knowledge that can be represented, including declarative facts, procedural knowledge of how to perform tasks, and meta-knowledge about what is already known. Knowledge-based systems are a form of artificial intelligence that captures human expertise in a knowledge base and uses an inference engine to support decision making, as seen in early expert systems like MYCIN for medical diagnosis.
Unit 2 discusses knowledge representation, which is important for intelligent systems to achieve useful tasks. It cannot be done without a large amount of domain-specific knowledge. Humans tackle problems using their knowledge resources, so knowledge must be represented inside computers for AI programs to manipulate. The document then defines knowledge representation as the part of AI concerned with how agents think and how thinking enables intelligent behavior. It represents real-world information so computers can understand and utilize knowledge to solve complex problems.
The document discusses knowledge representation in artificial intelligence. It covers several key issues in knowledge representation including important attributes, relationships among attributes, choosing an appropriate level of granularity, representing sets of objects, and finding the right knowledge structure. It also discusses different levels of knowledge-based agents including the knowledge, logical, and implementation levels. Finally, it defines knowledge representation and discusses what types of knowledge should be represented, including objects, events, performance, meta-knowledge, and facts. It identifies two main types of knowledge: declarative knowledge, which represents facts and concepts, and procedural knowledge, which represents how to perform tasks and achieve goals.
The document discusses artificial intelligence (AI) and provides definitions, goals, techniques, branches, applications, and vocabulary related to AI. It defines AI as the study of how to make computers do things that people do better, such as problem solving, learning, and reasoning. The document outlines science and engineering based goals of AI and discusses techniques like knowledge representation, learning, planning, and inference. It also lists common branches of AI including logical AI, search, pattern recognition, and learning from experience. The document provides examples of AI applications and concludes with a discussion of knowledge representation techniques.
The document provides an introduction to artificial intelligence, including:
1) Definitions of AI as the study of making computers intelligent like humans through techniques like problem solving, learning, reasoning, and perception.
2) Examples of different AI techniques for representing knowledge to solve problems like tic-tac-toe, with increasing complexity.
3) Branches and applications of AI like expert systems, machine learning, computer vision and natural language processing.
The document provides an introduction to artificial intelligence including:
- Definitions of AI as the study of making computers intelligent like humans through techniques like problem solving and learning.
- Branches of AI including logical AI, search, pattern recognition, representation, inference, common sense reasoning and learning from experience.
- Applications of AI in areas like perception, robotics, natural language processing, planning, and machine learning.
- Techniques used in AI like knowledge representation and different approaches to problems like tic-tac-toe and question answering with increasing complexity.
This document provides an overview of artificial intelligence including definitions, concepts, and applications. It defines AI as simulating human intelligence through machine learning and problem solving. Key points include:
- AI systems are designed to rationally achieve goals like humans through learning.
- Knowledge representation and organization is important for efficient searching and reasoning. Common methods include rules, frames, and ontologies.
- Knowledge-based systems combine a knowledge base with an inference engine to derive new understandings and solve complex problems. They are often used to replicate expert knowledge.
This document provides an overview of artificial intelligence techniques. It begins with definitions of AI and discusses branches of AI like logical AI, search, pattern recognition, knowledge representation, inference and more. It also discusses AI applications, problems in AI and the levels of modeling human intelligence. Several examples are then provided to illustrate increasingly sophisticated AI techniques for playing tic-tac-toe and answering questions to demonstrate moving towards knowledge representations that generalize information and are more extensible.
Artificial-Intelligence--AI And ES Nowledge Base SystemsJim Webb
This document discusses teaching artificial intelligence concepts to students. It recommends using hands-on exercises and group work to effectively introduce topics. It also provides sample questions to test understanding of knowledge-based systems and expert systems, including their components, development, applications, benefits, and limitations.
ARTIFICIAL INTELLIGENCE AND EXPERT SYSTEMS KNOWLEDGE-BASED SYSTEMS TEACHING ...Arlene Smith
This document discusses teaching artificial intelligence concepts to students. It recommends using hands-on exercises and group work to effectively introduce topics. It also provides sample questions to test understanding of knowledge-based systems and expert systems, including their components, development, applications, benefits, and limitations.
The document provides an overview of artificial intelligence (AI) including definitions, techniques, and challenges. It discusses how AI aims to make computers intelligent like humans by giving them abilities such as perception, reasoning, learning, and problem solving. Some key techniques mentioned are search, knowledge representation, and abstraction. The document also discusses the Turing Test as a proposed method for determining if a machine can think like a human. It provides examples of problems AI aims to solve such as game playing, commonsense reasoning, and perception.
Knowledge representation in AI describes how knowledge can be structured to enable automated reasoning. There are several techniques for knowledge representation, including logical, semantic network, frame-based, and rule-based representations. Each technique has advantages and disadvantages for representing different types of knowledge such as concepts, facts, procedures, and meta-knowledge. Choosing the right knowledge representation approach depends on the requirements, including accurately and efficiently representing, storing, inferring, and acquiring knowledge.
Impacto social del desarrollo de la Inteligencia artificial(Ingles)kamh18
The document discusses the social impacts of developing artificial intelligence. It begins by outlining the methodology used, which involved searching for information on artificial intelligence from digital libraries, books, and websites. It then provides an overview of key concepts in artificial intelligence, including definitions of AI, different approaches to AI, the role of agents, and how agents can act intelligently using knowledge and beliefs. The document also gives examples of applications of AI in fields like medicine, geology, and aeronautics.
The document discusses artificial intelligence (AI) and provides definitions, techniques, branches, and applications of AI. It defines AI as creating intelligent machines, especially computer programs, that can think like humans. It discusses representing knowledge to solve problems as an AI technique. Some branches of AI mentioned are logical AI, search, pattern recognition, representation, inference, common sense reasoning, learning from experience, planning, and applications in fields like robotics, natural language processing, and game playing.
Artificial Intelligence is branch of computer science concerned with the study and creation of computer system that exhibits some form of intelligence.
Introduction to AI (Artificial Intelligence).amolakkumar45
The document discusses the concepts of intelligence and logical thinking. It defines intelligence as the ability to learn, understand, reason, analyze problems and use language. Logical thinking is described as applying reasoning to solve problems by considering information in a step-by-step sequence. Examples provided include playing chess, math problems, and scientific experiments. The document also discusses artificial intelligence as simulating human intelligence through machine programming to think and act like humans. The goal of AI is to automate tasks requiring human intelligence.
1. The document defines intelligence as the ability to reason, understand complex ideas, learn from experience, plan tasks, and solve problems. It also discusses two major definitions of intelligence from scientific reports.
2. Artificial intelligence is defined as giving machines human-like intelligence or the ability to perform tasks normally requiring human intelligence. The document discusses different approaches to AI like systems that think rationally versus like humans.
3. The key approaches discussed are the Turing test to evaluate if a machine can think like a human, cognitive modeling to understand human thinking, and rational agent theory to create agents that act rationally to achieve goals.
Introduction–Definition - Future of Artificial Intelligence – Characteristics of Intelligent Agents– Typical Intelligent Agents – Problem Solving Approach to Typical AI problems.
Knowledge representation is an important part of artificial intelligence that allows intelligent systems to utilize stored real-world knowledge to solve complex problems. Knowledge representation involves encoding knowledge about objects, events, behaviors, facts, and meta-knowledge in a way that a computer system can manipulate and reason with. It enables machines to not just store data but also learn from experiences to behave intelligently like humans by representing different types of knowledge such as objects, events, performance, meta-knowledge, and facts in a knowledge base.
The document describes a proposed Emotional Cognitive Conversational Agent Architecture (ECCAA) for building chatbots. ECCAA is a 7-layer architecture based on cognitive theories like the Society of Minds approach. Each layer is connected to a database storing conversations and handles different levels of intelligence, from reflexive responses to meta-cognition. The layers were implemented in a chatbot prototype to analyze responses. Results showed ECCAA can achieve responses closer to human conversations compared to general conversational agents.
The document discusses key concepts in data warehouse architecture including:
1) The functions of data warehouse tools which extract, clean, transform, load, and refresh data from source systems.
2) Key terminologies like metadata, which provides information about the data warehouse contents, and dimensional modeling using facts, dimensions, and data cubes.
3) Common multidimensional data models like star schemas with a central fact table linked to dimension tables and snowflake schemas which further normalize dimension tables.
The document discusses the Data Mining Query Language (DMQL), which was proposed for the DBMiner data mining system. DMQL is based on SQL and allows users to define data mining tasks by specifying data warehouses, data marts, and types of knowledge to mine, such as characterization, discrimination, association, classification, and prediction. It also provides syntax for concept hierarchy specification to organize data attributes into different levels.
This document discusses stacks and queues as data structures. It begins with an overview of stacks, including their definition as a last-in, first-out abstract data type and common stack operations. Array implementation of stacks is described through examples of push and pop operations. The document also covers applications of stacks and different notation styles for arithmetic expressions. Next, queues are introduced as first-in, first-out data structures, with details on their array representation and operations like enqueue and dequeue. Implementation of queues using arrays and handling overflow/underflow conditions are explained.
Quicksort is a widely used sorting algorithm that follows the divide and conquer paradigm. It works by recursively choosing a pivot element in an array, partitioning the array such that all elements less than the pivot come before all elements greater than the pivot, and then applying the same approach recursively to the sub-arrays. This has the effect of sorting the array in place with each iteration reducing the problem size until the entire array is sorted. The document provides pseudocode to implement quicksort and explains the algorithm at a high level.
This document discusses the architecture of knowledge-based systems (KBS). It explains that a KBS contains a knowledge module called the knowledge base (KB) and a control module called the inference engine. The KB explicitly represents knowledge that can be easily updated by domain experts without programming expertise. A knowledge engineer acts as a liaison between domain experts and the computer implementation. Propositional logic is then introduced as a basic technique for representing knowledge in KBS. It represents statements as atomic or compound propositions connected by logical operators like negation, conjunction, disjunction, implication, and biconditional.
Knowledge representation techniques are used to store knowledge in artificial intelligence systems so they can understand the world and solve complex problems. There are several common techniques, including logic, rules, semantic networks, frames, and scripts. Ontological engineering is used to develop large, modular ontologies that represent complex domains and allow knowledge to be integrated and combined. For knowledge representation systems to be effective, they must adequately and efficiently represent, store, manipulate, and acquire new knowledge.
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it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
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Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
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This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
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Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
2. Introduction
Knowledge Representation and Reasoning forms the backbone of any
Intelligent Behavior through Computational means.
Human Intelligence is also driven through Knowledge.
Human beings are good at understanding, reasoning and interpreting
knowledge.
And using this knowledge, they are able to perform various actions in
the real world.
But how do machines perform the same?
3. Intelligent Behavior: Human Vs Artificial
• Human Intelligence
Most Complex and Mysterious phenomenon
Striking aspect of Intelligent behavior is that it is clearly conditioned
by knowledge.
Decisions for a wide range of activities are based on what we know
(or beliefs).
4. Intelligent Behavior: Human Vs Artificial
• Intelligent Behavior through Computational means:
Knowledge Representation and Reasoning is concerned with how an
agent uses what it knows in deciding what to do
Structures for representing the knowledge
Computational Processes for reasoning with those structures.
5.
6.
7. Definition and Importance of Knowledge
Knowledge Representation in AI describes the representation of
knowledge.
Basically, it is a study of how the beliefs, intentions,
and judgments of an intelligent agent can be expressed suitably for
automated reasoning.
One of the primary purposes of Knowledge Representation includes
modeling intelligent behavior for an agent.
8. Definition and Importance of Knowledge
Knowledge Representation and Reasoning (KR, KRR) represents
information from the real world for a computer to understand and then
utilize this knowledge to solve complex real-life problems like
communicating with human beings in natural language.
Knowledge representation in AI is not just about storing data in a
database, it allows a machine to learn from that knowledge and behave
intelligently like a human being.
9. What kind of knowledge to Represent:
The different kinds of knowledge that need to be represented in AI include:
Objects - All the facts about objects in our world domain. E.g., Guitars contains
strings, trumpets are brass instruments.
Events - Events are the actions which occur in our world.
Performance - It describe behavior which involves knowledge about how to do
things
Facts - Facts are the truths about the real world and what we represent
Meta-Knowledge It is knowledge about what we know.
Knowledge-base - - The central component of the knowledge-based agents is the
knowledge base. It is represented as KB. The Knowledge base is a group of the
Sentences (Here, sentences are used as a technical term and not identical with the
English language).
10. What kind of knowledge to Represent:
How to represent Knowledge?
How to implement the process of Reasoning?
13. 1. Declarative Knowledge:
Declarative knowledge is to know about something.
It includes concepts, facts, and objects.
It is also called descriptive knowledge and expressed in declarative sentences.
It is simpler than procedural language.
2. Procedural Knowledge
It is also known as imperative knowledge.
Procedural knowledge is a type of knowledge which is responsible for knowing how to do something.
It can be directly applied to any task.
It includes rules, strategies, procedures, agendas, etc.
Procedural knowledge depends on the task on which it can be applied.
3. Meta-knowledge:
Knowledge about the other types of knowledge is called Meta-knowledge.
4. Heuristic knowledge:
Heuristic knowledge is representing knowledge of some experts in a filed or subject.
Heuristic knowledge is rules of thumb based on previous experiences, awareness of approaches, and which are good to work but not guaranteed.
5. Structural knowledge:
Structural knowledge is basic knowledge to problem-solving.
It describes relationships between various concepts such as kind of, part of, and grouping of something.
It describes the relationship that exists between concepts or objects
Eg: “ red” represents color red
“car1” represents my car
red(car1) represents the fact that my car is red.
14. Relation between Knowledge & Intelligence?
Knowledge of real-worlds plays a vital role in intelligence
and same for creating artificial intelligence.
Knowledge plays an important role in demonstrating
intelligent behavior in AI agents.
An agent is only able to accurately act on some input when
he has some knowledge or experience about that input.
Let's suppose if you met some person who is speaking in a
language which you don't know, then how you will able to
act on that.
The same thing applies to the intelligent behavior of the
agents.
In the diagram, there is one decision maker which act by
sensing the environment and using knowledge. But if the
knowledge part will not present then, it cannot display
intelligent behavior.
15. Cycle of Knowledge Representation in AI
Artificial Intelligent Systems usually consist of various components to
display their intelligent behavior. Some of these components include:
Perception
Learning
Knowledge Representation & Reasoning
Planning
Execution
17. Perception component
The Perception component retrieves data or information from
the environment. with the help of this component, you can
retrieve data from the environment
Find out the source of noises and check if the AI was damaged
by anything.
Also, it defines how to respond when any sense has been
detected.
18. Learning Component
There is the Learning Component that learns from the captured data
by the perception component.
The goal is to build computers that can be taught instead of
programming them.
Learning focuses on the process of self-improvement.
In order to learn new things, the system requires knowledge
acquisition, inference, acquisition of heuristics, faster searches, etc.
19. Main Component
The main component in the cycle is Knowledge Representation and
Reasoning which shows the human-like intelligence in the machines.
Knowledge representation is all about understanding intelligence.
Instead of trying to understand or build brains from the bottom up, its
goal is to understand and build intelligent behavior from the top-down
and focus on what an agent needs to know in order to behave
intelligently.
Also, it defines how automated reasoning procedures can make this
knowledge available as needed.
20. Planning and Execution components
The Planning and Execution components depend on the analysis of
knowledge representation and reasoning.
Here, planning includes giving an initial state, finding their
preconditions and effects, and a sequence of actions to achieve a state
in which a particular goal holds.
Now once the planning is completed, the final stage is the execution
of the entire process.
21. Knowledge Based System
• A knowledge-based system (KBS) is a program that captures and uses
knowledge from a variety of sources.
• A KBS assists with solving problems, particularly complex issues, by
artificial intelligence.
• These systems are primarily used to support human decision making,
learning, and other activities.
• A knowledge-based system is a major area of artificial intelligence.
• These systems can make decisions based on the data and information
that resides in their database.
• In addition, they can comprehend the context of the data being
processed.
22. • A knowledge-based system is comprised of a knowledge base and an
interface engine.
• The knowledge base functions as the knowledge repository, while the
interface engine functions as the search engine.
• Learning is a key element to a knowledge-based system, and learning
simulation improves the system over time.
• Knowledge-based systems are categorized as expert systems,
intelligent tutoring systems, hypertext manipulations systems, CASE-
based systems, and databases having an intelligent user interface.
23. • Knowledge-based systems work across a number of applications. For
instance, in the medical field, a KBS can help doctors more accurately
diagnose diseases.
• These systems are called clinical decision-support systems in the
health industry.
• A KBS can also be used in areas as diverse as industrial equipment
fault diagnosis, avalanche path analysis, and cash management.
24. KBS Architecture
KBS can be RULE BASED REASONING, MODEL BASED OR CASE BASED REASONING
Knowledge module is KB
Control Module is Inference Engine
25. As the knowledge is represented explicitly in the knowledge base,
rather than implicitly within the structure of a program, it can be
entered and updated with relative ease by domain experts who may not
have any programming expertise.
A knowledge engineer is someone who provides a bridge between the
domain expertise and the computer implementation.
The knowledge engineer may make use of meta-knowledge, i.e.
knowledge about knowledge, to ensure an efficient implementation.
26. Requirements of knowledge Representation
• A knowledge representation has the following requirements
1.It should have the adequacy or fulfillment to represent all types of
knowledge present in the domain. It is also known as
representational adequacy.
2.It should be capable enough to manipulate the representational
structure in order to derive new structures which also should be
corresponding to the new knowledge extracted from the old. It is
also referred as inferential adequacy.
3.It should be able to indulge the additional information into the
knowledge structure which can be further used to focus on
inference mechanisms in the best possible direction. It is sometimes
known as inferential efficiency.
4.It should acquire new knowledge with the help of automatic
methods rather than relying on human source. This process is
known as acquisitional efficiency.
27.
28.
29.
30.
31. Propositional Logic
• Propositional logic (PL) is the simplest form of logic where all the
statements are made by propositions.
• A proposition is a declarative statement which is either true or false.
• It is a technique of knowledge representation in logical and
mathematical form.
32. Following are some basic facts about propositional
logic:
• Propositional logic is also called Boolean logic as it works on 0 and 1.
• In propositional logic, we use symbolic variables to represent the logic, and we can use
any symbol for a representing a proposition, such A, B, C, P, Q, R, etc.
• Propositions can be either true or false, but it cannot be both.
• Propositional logic consists of an object, relations or function, and logical connectives.
• These connectives are also called logical operators.
• The propositions and connectives are the basic elements of the propositional logic.
• Connectives can be said as a logical operator which connects two sentences.
• A proposition formula which is always true is called tautology, and it is also called a valid
sentence.
• A proposition formula which is always false is called Contradiction.
• Statements which are questions, commands, or opinions are not propositions such as
"Where is Rohini", "How are you", "What is your name", are not propositions.
33. Syntax of propositional logic:
• The syntax of propositional logic defines the allowable sentences for
the knowledge representation. There are two types of Propositions:
• Atomic Propositions
• Compound propositions
• Atomic Proposition: Atomic propositions are the simple propositions.
It consists of a single proposition symbol. These are the sentences
which must be either true or false.
34. • Compound proposition: Compound propositions are constructed by
combining simpler or atomic propositions, using parenthesis and
logical connectives.
35. Logical Connectives:
• Logical connectives are used to connect two simpler propositions or
representing a sentence logically. We can create compound
propositions with the help of logical connectives. There are mainly
five connectives, which are given as follows:
• Negation: A sentence such as ¬ P is called negation of P. A literal can
be either Positive literal or negative literal.
• Conjunction: A sentence which has ∧ connective such as, P ∧ Q is
called a conjunction.
Example: Rohan is intelligent and hardworking. It can be written as,
P= Rohan is intelligent,
Q= Rohan is hardworking. → P∧ Q.
36. Logical Connectives:
• Disjunction: A sentence which has ∨ connective, such as P ∨ Q. is called
disjunction, where P and Q are the propositions.
Example: "Ritika is a doctor or Engineer",
Here P= Ritika is Doctor. Q= Ritika is Doctor, so we can write it as P ∨ Q.
• Implication: A sentence such as P → Q, is called an implication.
Implications are also known as if-then rules. It can be represented as
If it is raining, then the street is wet.
Let P= It is raining, and Q= Street is wet, so it is represented as P → Q
• Biconditional: A sentence such as P⇔ Q is a Biconditional sentence,
example If I am breathing, then I am alive
P= I am breathing, Q= I am alive, it can be represented as P ⇔ Q