Support Vector Machine (SVM) is a supervised machine learning algorithm that can be used for both classification and regression analysis. It works by finding a hyperplane in an N-dimensional space that distinctly classifies the data points. SVM selects the hyperplane that has the largest distance to the nearest training data points of any class, since larger the margin lower the generalization error of the classifier. SVM can efficiently perform nonlinear classification by implicitly mapping their inputs into high-dimensional feature spaces.
A Support Vector Machine (SVM) is a discriminative classifier formally defined by a separating hyperplane. In other words, given labeled training data (supervised learning), the algorithm outputs an optimal hyperplane which categorizes new examples. In two dimentional space this hyperplane is a line dividing a plane in two parts where in each class lay in either side.
- Naive Bayes is a classification technique based on Bayes' theorem that uses "naive" independence assumptions. It is easy to build and can perform well even with large datasets.
- It works by calculating the posterior probability for each class given predictor values using the Bayes theorem and independence assumptions between predictors. The class with the highest posterior probability is predicted.
- It is commonly used for text classification, spam filtering, and sentiment analysis due to its fast performance and high success rates compared to other algorithms.
A fast-paced introduction to Deep Learning concepts, such as activation functions, cost functions, back propagation, and then a quick dive into CNNs. Basic knowledge of vectors, matrices, and derivatives is helpful in order to derive the maximum benefit from this session.
The document provides an overview of machine learning. It defines machine learning as algorithms that can learn from data to optimize performance and make predictions. It discusses different types of machine learning including supervised learning (classification and regression), unsupervised learning (clustering), and reinforcement learning. Applications mentioned include speech recognition, autonomous robot control, data mining, playing games, fault detection, and clinical diagnosis. Statistical learning and probabilistic models are also introduced. Examples of machine learning problems and techniques like decision trees and naive Bayes classifiers are provided.
Support vector machines are a type of supervised machine learning algorithm used for classification and regression analysis. They work by mapping data to high-dimensional feature spaces to find optimal linear separations between classes. Key advantages are effectiveness in high dimensions, memory efficiency using support vectors, and versatility through kernel functions. Hyperparameters like kernel type, gamma, and C must be tuned for best performance. Common kernels include linear, polynomial, and radial basis function kernels.
Hands-On Machine Learning with Scikit-Learn and TensorFlow - Chapter8Hakky St
This is the documentation of the study-meeting in lab.
Tha book title is "Hands-On Machine Learning with Scikit-Learn and TensorFlow" and this is the chapter 8.
Support Vector Machine (SVM) is a supervised machine learning algorithm that can be used for both classification and regression analysis. It works by finding a hyperplane in an N-dimensional space that distinctly classifies the data points. SVM selects the hyperplane that has the largest distance to the nearest training data points of any class, since larger the margin lower the generalization error of the classifier. SVM can efficiently perform nonlinear classification by implicitly mapping their inputs into high-dimensional feature spaces.
A Support Vector Machine (SVM) is a discriminative classifier formally defined by a separating hyperplane. In other words, given labeled training data (supervised learning), the algorithm outputs an optimal hyperplane which categorizes new examples. In two dimentional space this hyperplane is a line dividing a plane in two parts where in each class lay in either side.
- Naive Bayes is a classification technique based on Bayes' theorem that uses "naive" independence assumptions. It is easy to build and can perform well even with large datasets.
- It works by calculating the posterior probability for each class given predictor values using the Bayes theorem and independence assumptions between predictors. The class with the highest posterior probability is predicted.
- It is commonly used for text classification, spam filtering, and sentiment analysis due to its fast performance and high success rates compared to other algorithms.
A fast-paced introduction to Deep Learning concepts, such as activation functions, cost functions, back propagation, and then a quick dive into CNNs. Basic knowledge of vectors, matrices, and derivatives is helpful in order to derive the maximum benefit from this session.
The document provides an overview of machine learning. It defines machine learning as algorithms that can learn from data to optimize performance and make predictions. It discusses different types of machine learning including supervised learning (classification and regression), unsupervised learning (clustering), and reinforcement learning. Applications mentioned include speech recognition, autonomous robot control, data mining, playing games, fault detection, and clinical diagnosis. Statistical learning and probabilistic models are also introduced. Examples of machine learning problems and techniques like decision trees and naive Bayes classifiers are provided.
Support vector machines are a type of supervised machine learning algorithm used for classification and regression analysis. They work by mapping data to high-dimensional feature spaces to find optimal linear separations between classes. Key advantages are effectiveness in high dimensions, memory efficiency using support vectors, and versatility through kernel functions. Hyperparameters like kernel type, gamma, and C must be tuned for best performance. Common kernels include linear, polynomial, and radial basis function kernels.
Hands-On Machine Learning with Scikit-Learn and TensorFlow - Chapter8Hakky St
This is the documentation of the study-meeting in lab.
Tha book title is "Hands-On Machine Learning with Scikit-Learn and TensorFlow" and this is the chapter 8.
This Presentation covers Data Mining: Classification and Prediction, NEURAL NETWORK REPRESENTATION, NEURAL NETWORK APPLICATION DEVELOPMENT, BENEFITS AND LIMITATIONS OF NEURAL NETWORKS, Neural Networks, Real Estate Appraiser, Kinds of Data Mining Problems, Data Mining Techniques, Learning in ANN, Elements of ANN, Neural Network Architectures Recurrent Neural Networks and ANN Software.
DBScan stands for Density-Based Spatial Clustering of Applications with Noise.
DBScan Concepts
DBScan Parameters
DBScan Connectivity and Reachability
DBScan Algorithm , Flowchart and Example
Advantages and Disadvantages of DBScan
DBScan Complexity
Outliers related question and its solution.
1. Machine learning is a set of techniques that use data to build models that can make predictions without being explicitly programmed.
2. There are two main types of machine learning: supervised learning, where the model is trained on labeled examples, and unsupervised learning, where the model finds patterns in unlabeled data.
3. Common machine learning algorithms include linear regression, logistic regression, decision trees, support vector machines, naive Bayes, k-nearest neighbors, k-means clustering, and random forests. These can be used for regression, classification, clustering, and dimensionality reduction.
Lecture1 introduction to machine learningUmmeSalmaM1
Machine Learning is a field of computer science which deals with the study of computer algorithms that improve automatically through experience. In this PPT we discuss the following concepts - Prerequisite, Definition, Introduction to Machine Learning (ML), Fields associated with ML, Need for ML, Difference between Artificial Intelligence, Machine Learning, Deep Learning, Types of learning in ML, Applications of ML, Limitations of Machine Learning.
The document discusses bagging, an ensemble machine learning method. Bagging (bootstrap aggregating) uses multiple models fitted on random subsets of a dataset to improve stability and accuracy compared to a single model. It works by training base models in parallel on random samples with replacement of the original dataset and aggregating their predictions. Key benefits are reduced variance, easier implementation through libraries like scikit-learn, and improved performance over single models. However, bagging results in less interpretable models compared to a single model.
Supervised and Unsupervised Learning In Machine Learning | Machine Learning T...Simplilearn
This document provides an overview of machine learning, including:
- Machine learning allows computers to learn from data without being explicitly programmed, through processes like analyzing data, training models on past data, and making predictions.
- The main types of machine learning are supervised learning, which uses labeled training data to predict outputs, and unsupervised learning, which finds patterns in unlabeled data.
- Common supervised learning tasks include classification (like spam filtering) and regression (like weather prediction). Unsupervised learning includes clustering, like customer segmentation, and association, like market basket analysis.
- Supervised and unsupervised learning are used in many areas like risk assessment, image classification, fraud detection, customer analytics, and more
Abstract: This PDSG workshop introduces basic concepts of ensemble methods in machine learning. Concepts covered are Condercet Jury Theorem, Weak Learners, Decision Stumps, Bagging and Majority Voting.
Level: Fundamental
Requirements: No prior programming or statistics knowledge required.
A brief presentation given on the basics of Ensemble Methods. Given as a 'Lightning Talk' during the 7th Cohort of General Assembly's Data Science Immersive Course
Introduction to linear regression and the maths behind it like line of best fit, regression matrics. Other concepts include cost function, gradient descent, overfitting and underfitting, r squared.
This document provides an overview of machine learning algorithms and scikit-learn. It begins with an introduction and table of contents. Then it covers topics like dataset loading from files, pandas, scikit-learn datasets, preprocessing data like handling missing values, feature selection, dimensionality reduction, training and test sets, supervised and unsupervised learning models, and saving/loading machine learning models. For each topic, it provides code examples and explanations.
Welcome to the Supervised Machine Learning and Data Sciences.
Algorithms for building models. Support Vector Machines.
Classification algorithm explanation and code in Python ( SVM ) .
Neural networks are inspired by biological neural networks and are composed of interconnected processing elements called neurons. Neural networks can learn complex patterns and relationships through a learning process without being explicitly programmed. They are widely used for applications like pattern recognition, classification, forecasting and more. The document discusses neural network concepts like architecture, learning methods, activation functions and applications. It provides examples of biological and artificial neurons and compares their characteristics.
The document discusses deep neural networks (DNN) and deep learning. It explains that deep learning uses multiple layers to learn hierarchical representations from raw input data. Lower layers identify lower-level features while higher layers integrate these into more complex patterns. Deep learning models are trained on large datasets by adjusting weights to minimize error. Applications discussed include image recognition, natural language processing, drug discovery, and analyzing satellite imagery. Both advantages like state-of-the-art performance and drawbacks like high computational costs are outlined.
This Machine Learning Algorithms presentation will help you learn you what machine learning is, and the various ways in which you can use machine learning to solve a problem. At the end, you will see a demo on linear regression, logistic regression, decision tree and random forest. This Machine Learning Algorithms presentation is designed for beginners to make them understand how to implement the different Machine Learning Algorithms.
Below topics are covered in this Machine Learning Algorithms Presentation:
1. Real world applications of Machine Learning
2. What is Machine Learning?
3. Processes involved in Machine Learning
4. Type of Machine Learning Algorithms
5. Popular Algorithms with a hands-on demo
- Linear regression
- Logistic regression
- Decision tree and Random forest
- N Nearest neighbor
What is Machine Learning: Machine Learning is an application of Artificial Intelligence (AI) that provides systems the ability to automatically learn and improve from experience without being explicitly programmed.
- - - - - - - -
About Simplilearn Machine Learning course:
A form of artificial intelligence, Machine Learning is revolutionizing the world of computing as well as all people’s digital interactions. Machine Learning powers such innovative automated technologies as recommendation engines, facial recognition, fraud protection and even self-driving cars.This Machine Learning course prepares engineers, data scientists and other professionals with knowledge and hands-on skills required for certification and job competency in Machine Learning.
- - - - - - -
Why learn Machine Learning?
Machine Learning is taking over the world- and with that, there is a growing need among companies for professionals to know the ins and outs of Machine Learning
The Machine Learning market size is expected to grow from USD 1.03 Billion in 2016 to USD 8.81 Billion by 2022, at a Compound Annual Growth Rate (CAGR) of 44.1% during the forecast period.
- - - - - -
What skills will you learn from this Machine Learning course?
By the end of this Machine Learning course, you will be able to:
1. Master the concepts of supervised, unsupervised and reinforcement learning concepts and modeling.
2. Gain practical mastery over principles, algorithms, and applications of Machine Learning through a hands-on approach which includes working on 28 projects and one capstone project.
3. Acquire thorough knowledge of the mathematical and heuristic aspects of Machine Learning.
4. Understand the concepts and operation of support vector machines, kernel SVM, naive Bayes, decision tree classifier, random forest classifier, logistic regression, K-nearest neighbors, K-means clustering and more.
5. Be able to model a wide variety of robust Machine Learning algorithms including deep learning, clustering, and recommendation systems
- - - - - - -
Machine Learning Tutorial Part - 1 | Machine Learning Tutorial For Beginners ...Simplilearn
This presentation on Machine Learning will help you understand why Machine Learning came into picture, what is Machine Learning, types of Machine Learning, Machine Learning algorithms with a detailed explanation on linear regression, decision tree & support vector machine and at the end you will also see a use case implementation where we classify whether a recipe is of a cupcake or muffin using SVM algorithm. Machine learning is a core sub-area of artificial intelligence; it enables computers to get into a mode of self-learning without being explicitly programmed. When exposed to new data, these computer programs are enabled to learn, grow, change, and develop by themselves. So, to put simply, the iterative aspect of machine learning is the ability to adapt to new data independently. Now, let us get started with this Machine Learning presentation and understand what it is and why it matters.
Below topics are explained in this Machine Learning presentation:
1. Why Machine Learning?
2. What is Machine Learning?
3. Types of Machine Learning
4. Machine Learning Algorithms
- Linear Regression
- Decision Trees
- Support Vector Machine
5. Use case: Classify whether a recipe is of a cupcake or a muffin using SVM
About Simplilearn Machine Learning course:
A form of artificial intelligence, Machine Learning is revolutionizing the world of computing as well as all people’s digital interactions. Machine Learning powers such innovative automated technologies as recommendation engines, facial recognition, fraud protection and even self-driving cars. This Machine Learning course prepares engineers, data scientists and other professionals with knowledge and hands-on skills required for certification and job competency in Machine Learning.
Why learn Machine Learning?
Machine Learning is taking over the world- and with that, there is a growing need among companies for professionals to know the ins and outs of Machine Learning
The Machine Learning market size is expected to grow from USD 1.03 Billion in 2016 to USD 8.81 Billion by 2022, at a Compound Annual Growth Rate (CAGR) of 44.1% during the forecast period.
We recommend this Machine Learning training course for the following professionals in particular:
1. Developers aspiring to be a data scientist or Machine Learning engineer
2. Information architects who want to gain expertise in Machine Learning algorithms
3. Analytics professionals who want to work in Machine Learning or artificial intelligence
4. Graduates looking to build a career in data science and Machine Learning
Learn more at: https://www.simplilearn.com/
2.6 support vector machines and associative classifiers revisedKrish_ver2
Support vector machines (SVMs) are a type of supervised machine learning model that can be used for both classification and regression analysis. SVMs work by finding a hyperplane in a multidimensional space that best separates clusters of data points. Nonlinear kernels can be used to transform input data into a higher dimensional space to allow for the detection of complex patterns. Associative classification is an alternative approach that uses association rule mining to generate rules describing attribute relationships that can then be used for classification.
The document discusses decision trees and random forest algorithms. It begins with an outline and defines the problem as determining target attribute values for new examples given a training data set. It then explains key requirements like discrete classes and sufficient data. The document goes on to describe the principles of decision trees, including entropy and information gain as criteria for splitting nodes. Random forests are introduced as consisting of multiple decision trees to help reduce variance. The summary concludes by noting out-of-bag error rate can estimate classification error as trees are added.
This document provides an overview of data mining and machine learning concepts. It defines data mining as the process of discovering patterns in data. Machine learning allows computers to learn without being explicitly programmed by improving at tasks through experience. The document discusses different types of machine learning including supervised learning to predict outputs from inputs, unsupervised learning to understand and describe data without correct answers, and reinforcement learning to learn actions through rewards. It also covers machine learning problems, algorithms like K-nearest neighbors for classification and K-means clustering, and evaluating machine learning models.
This Presentation covers Data Mining: Classification and Prediction, NEURAL NETWORK REPRESENTATION, NEURAL NETWORK APPLICATION DEVELOPMENT, BENEFITS AND LIMITATIONS OF NEURAL NETWORKS, Neural Networks, Real Estate Appraiser, Kinds of Data Mining Problems, Data Mining Techniques, Learning in ANN, Elements of ANN, Neural Network Architectures Recurrent Neural Networks and ANN Software.
DBScan stands for Density-Based Spatial Clustering of Applications with Noise.
DBScan Concepts
DBScan Parameters
DBScan Connectivity and Reachability
DBScan Algorithm , Flowchart and Example
Advantages and Disadvantages of DBScan
DBScan Complexity
Outliers related question and its solution.
1. Machine learning is a set of techniques that use data to build models that can make predictions without being explicitly programmed.
2. There are two main types of machine learning: supervised learning, where the model is trained on labeled examples, and unsupervised learning, where the model finds patterns in unlabeled data.
3. Common machine learning algorithms include linear regression, logistic regression, decision trees, support vector machines, naive Bayes, k-nearest neighbors, k-means clustering, and random forests. These can be used for regression, classification, clustering, and dimensionality reduction.
Lecture1 introduction to machine learningUmmeSalmaM1
Machine Learning is a field of computer science which deals with the study of computer algorithms that improve automatically through experience. In this PPT we discuss the following concepts - Prerequisite, Definition, Introduction to Machine Learning (ML), Fields associated with ML, Need for ML, Difference between Artificial Intelligence, Machine Learning, Deep Learning, Types of learning in ML, Applications of ML, Limitations of Machine Learning.
The document discusses bagging, an ensemble machine learning method. Bagging (bootstrap aggregating) uses multiple models fitted on random subsets of a dataset to improve stability and accuracy compared to a single model. It works by training base models in parallel on random samples with replacement of the original dataset and aggregating their predictions. Key benefits are reduced variance, easier implementation through libraries like scikit-learn, and improved performance over single models. However, bagging results in less interpretable models compared to a single model.
Supervised and Unsupervised Learning In Machine Learning | Machine Learning T...Simplilearn
This document provides an overview of machine learning, including:
- Machine learning allows computers to learn from data without being explicitly programmed, through processes like analyzing data, training models on past data, and making predictions.
- The main types of machine learning are supervised learning, which uses labeled training data to predict outputs, and unsupervised learning, which finds patterns in unlabeled data.
- Common supervised learning tasks include classification (like spam filtering) and regression (like weather prediction). Unsupervised learning includes clustering, like customer segmentation, and association, like market basket analysis.
- Supervised and unsupervised learning are used in many areas like risk assessment, image classification, fraud detection, customer analytics, and more
Abstract: This PDSG workshop introduces basic concepts of ensemble methods in machine learning. Concepts covered are Condercet Jury Theorem, Weak Learners, Decision Stumps, Bagging and Majority Voting.
Level: Fundamental
Requirements: No prior programming or statistics knowledge required.
A brief presentation given on the basics of Ensemble Methods. Given as a 'Lightning Talk' during the 7th Cohort of General Assembly's Data Science Immersive Course
Introduction to linear regression and the maths behind it like line of best fit, regression matrics. Other concepts include cost function, gradient descent, overfitting and underfitting, r squared.
This document provides an overview of machine learning algorithms and scikit-learn. It begins with an introduction and table of contents. Then it covers topics like dataset loading from files, pandas, scikit-learn datasets, preprocessing data like handling missing values, feature selection, dimensionality reduction, training and test sets, supervised and unsupervised learning models, and saving/loading machine learning models. For each topic, it provides code examples and explanations.
Welcome to the Supervised Machine Learning and Data Sciences.
Algorithms for building models. Support Vector Machines.
Classification algorithm explanation and code in Python ( SVM ) .
Neural networks are inspired by biological neural networks and are composed of interconnected processing elements called neurons. Neural networks can learn complex patterns and relationships through a learning process without being explicitly programmed. They are widely used for applications like pattern recognition, classification, forecasting and more. The document discusses neural network concepts like architecture, learning methods, activation functions and applications. It provides examples of biological and artificial neurons and compares their characteristics.
The document discusses deep neural networks (DNN) and deep learning. It explains that deep learning uses multiple layers to learn hierarchical representations from raw input data. Lower layers identify lower-level features while higher layers integrate these into more complex patterns. Deep learning models are trained on large datasets by adjusting weights to minimize error. Applications discussed include image recognition, natural language processing, drug discovery, and analyzing satellite imagery. Both advantages like state-of-the-art performance and drawbacks like high computational costs are outlined.
This Machine Learning Algorithms presentation will help you learn you what machine learning is, and the various ways in which you can use machine learning to solve a problem. At the end, you will see a demo on linear regression, logistic regression, decision tree and random forest. This Machine Learning Algorithms presentation is designed for beginners to make them understand how to implement the different Machine Learning Algorithms.
Below topics are covered in this Machine Learning Algorithms Presentation:
1. Real world applications of Machine Learning
2. What is Machine Learning?
3. Processes involved in Machine Learning
4. Type of Machine Learning Algorithms
5. Popular Algorithms with a hands-on demo
- Linear regression
- Logistic regression
- Decision tree and Random forest
- N Nearest neighbor
What is Machine Learning: Machine Learning is an application of Artificial Intelligence (AI) that provides systems the ability to automatically learn and improve from experience without being explicitly programmed.
- - - - - - - -
About Simplilearn Machine Learning course:
A form of artificial intelligence, Machine Learning is revolutionizing the world of computing as well as all people’s digital interactions. Machine Learning powers such innovative automated technologies as recommendation engines, facial recognition, fraud protection and even self-driving cars.This Machine Learning course prepares engineers, data scientists and other professionals with knowledge and hands-on skills required for certification and job competency in Machine Learning.
- - - - - - -
Why learn Machine Learning?
Machine Learning is taking over the world- and with that, there is a growing need among companies for professionals to know the ins and outs of Machine Learning
The Machine Learning market size is expected to grow from USD 1.03 Billion in 2016 to USD 8.81 Billion by 2022, at a Compound Annual Growth Rate (CAGR) of 44.1% during the forecast period.
- - - - - -
What skills will you learn from this Machine Learning course?
By the end of this Machine Learning course, you will be able to:
1. Master the concepts of supervised, unsupervised and reinforcement learning concepts and modeling.
2. Gain practical mastery over principles, algorithms, and applications of Machine Learning through a hands-on approach which includes working on 28 projects and one capstone project.
3. Acquire thorough knowledge of the mathematical and heuristic aspects of Machine Learning.
4. Understand the concepts and operation of support vector machines, kernel SVM, naive Bayes, decision tree classifier, random forest classifier, logistic regression, K-nearest neighbors, K-means clustering and more.
5. Be able to model a wide variety of robust Machine Learning algorithms including deep learning, clustering, and recommendation systems
- - - - - - -
Machine Learning Tutorial Part - 1 | Machine Learning Tutorial For Beginners ...Simplilearn
This presentation on Machine Learning will help you understand why Machine Learning came into picture, what is Machine Learning, types of Machine Learning, Machine Learning algorithms with a detailed explanation on linear regression, decision tree & support vector machine and at the end you will also see a use case implementation where we classify whether a recipe is of a cupcake or muffin using SVM algorithm. Machine learning is a core sub-area of artificial intelligence; it enables computers to get into a mode of self-learning without being explicitly programmed. When exposed to new data, these computer programs are enabled to learn, grow, change, and develop by themselves. So, to put simply, the iterative aspect of machine learning is the ability to adapt to new data independently. Now, let us get started with this Machine Learning presentation and understand what it is and why it matters.
Below topics are explained in this Machine Learning presentation:
1. Why Machine Learning?
2. What is Machine Learning?
3. Types of Machine Learning
4. Machine Learning Algorithms
- Linear Regression
- Decision Trees
- Support Vector Machine
5. Use case: Classify whether a recipe is of a cupcake or a muffin using SVM
About Simplilearn Machine Learning course:
A form of artificial intelligence, Machine Learning is revolutionizing the world of computing as well as all people’s digital interactions. Machine Learning powers such innovative automated technologies as recommendation engines, facial recognition, fraud protection and even self-driving cars. This Machine Learning course prepares engineers, data scientists and other professionals with knowledge and hands-on skills required for certification and job competency in Machine Learning.
Why learn Machine Learning?
Machine Learning is taking over the world- and with that, there is a growing need among companies for professionals to know the ins and outs of Machine Learning
The Machine Learning market size is expected to grow from USD 1.03 Billion in 2016 to USD 8.81 Billion by 2022, at a Compound Annual Growth Rate (CAGR) of 44.1% during the forecast period.
We recommend this Machine Learning training course for the following professionals in particular:
1. Developers aspiring to be a data scientist or Machine Learning engineer
2. Information architects who want to gain expertise in Machine Learning algorithms
3. Analytics professionals who want to work in Machine Learning or artificial intelligence
4. Graduates looking to build a career in data science and Machine Learning
Learn more at: https://www.simplilearn.com/
2.6 support vector machines and associative classifiers revisedKrish_ver2
Support vector machines (SVMs) are a type of supervised machine learning model that can be used for both classification and regression analysis. SVMs work by finding a hyperplane in a multidimensional space that best separates clusters of data points. Nonlinear kernels can be used to transform input data into a higher dimensional space to allow for the detection of complex patterns. Associative classification is an alternative approach that uses association rule mining to generate rules describing attribute relationships that can then be used for classification.
The document discusses decision trees and random forest algorithms. It begins with an outline and defines the problem as determining target attribute values for new examples given a training data set. It then explains key requirements like discrete classes and sufficient data. The document goes on to describe the principles of decision trees, including entropy and information gain as criteria for splitting nodes. Random forests are introduced as consisting of multiple decision trees to help reduce variance. The summary concludes by noting out-of-bag error rate can estimate classification error as trees are added.
This document provides an overview of data mining and machine learning concepts. It defines data mining as the process of discovering patterns in data. Machine learning allows computers to learn without being explicitly programmed by improving at tasks through experience. The document discusses different types of machine learning including supervised learning to predict outputs from inputs, unsupervised learning to understand and describe data without correct answers, and reinforcement learning to learn actions through rewards. It also covers machine learning problems, algorithms like K-nearest neighbors for classification and K-means clustering, and evaluating machine learning models.
Supervised learning uses labeled training data to predict outcomes for new data. Unsupervised learning uses unlabeled data to discover patterns. Some key machine learning algorithms are described, including decision trees, naive Bayes classification, k-nearest neighbors, and support vector machines. Performance metrics for classification problems like accuracy, precision, recall, F1 score, and specificity are discussed.
Performed analysis on Temperature, Wind Speed, Humidity and Pressure data-sets and implemented decision tree & clustering to predict possibility of rain
Created graphs and plots using algorithms such as k-nearest neighbors, naïve bayes, decision tree and k means clustering
The document discusses various clustering approaches including partitioning, hierarchical, density-based, grid-based, model-based, frequent pattern-based, and constraint-based methods. It focuses on partitioning methods such as k-means and k-medoids clustering. K-means clustering aims to partition objects into k clusters by minimizing total intra-cluster variance, representing each cluster by its centroid. K-medoids clustering is a more robust variant that represents each cluster by its medoid or most centrally located object. The document also covers algorithms for implementing k-means and k-medoids clustering.
Types of Machine Learnig Algorithms(CART, ID3)Fatimakhan325
The document summarizes several machine learning algorithms used for data mining:
- Decision trees use nodes and edges to iteratively divide data into groups for classification or prediction.
- Naive Bayes classifiers use Bayes' theorem for text classification, spam filtering, and sentiment analysis due to their multi-class prediction abilities.
- K-nearest neighbors algorithms find the closest K data points to make predictions for classification or regression problems.
- ID3, CART, and k-means clustering are also summarized highlighting their uses, advantages, and disadvantages.
The document discusses classification and prediction using decision trees. It begins by defining classification as predicting categorical labels from data, such as predicting if a loan applicant is "safe" or "risky". Prediction involves predicting continuous or ordered values, such as how much a customer will spend. The document then discusses how decision trees perform classification by recursively splitting the data into purer subsets based on attribute values, with leaf nodes representing class labels. Information gain is used as the splitting criterion to select the attribute that best splits the data. Finally, it notes that attributes with many values can bias decision trees towards overfitting.
Supervised learning involves using a training dataset to learn a target function that can be used to predict class labels or attribute values. The document discusses supervised learning and classification, including types of supervised learning problems like classification and regression. It provides examples of classification algorithms like K-nearest neighbors, decision trees, naive Bayes, and support vector machines. It also gives examples of how to implement classification algorithms using scikit-learn and discusses evaluating classification model performance based on accuracy.
This document provides an overview of machine learning techniques for classification and anomaly detection. It begins with an introduction to machine learning and common tasks like classification, clustering, and anomaly detection. Basic classification techniques are then discussed, including probabilistic classifiers like Naive Bayes, decision trees, instance-based learning like k-nearest neighbors, and linear classifiers like logistic regression. The document provides examples and comparisons of these different methods. It concludes by discussing anomaly detection and how it differs from classification problems, noting challenges like having few positive examples of anomalies.
IMAGE CLASSIFICATION USING DIFFERENT CLASSICAL APPROACHESVikash Kumar
IMAGE CLASSIFICATION USING KNN, RANDOM FOREST AND SVM ALGORITHM ON GLAUCOMA DATASETS AND EXPLAIN THE ACCURACY, SENSITIVITY, AND SPECIFICITY OF EACH AND EVERY ALGORITHMS
Classifiers are algorithms that map input data to categories in order to build models for predicting unknown data. There are several types of classifiers that can be used including logistic regression, decision trees, random forests, support vector machines, Naive Bayes, and neural networks. Each uses different techniques such as splitting data, averaging predictions, or maximizing margins to classify data. The best classifier depends on the problem and achieving high accuracy, sensitivity, and specificity.
This document provides an overview of clustering techniques. It introduces partitioning methods like k-means and k-medoids, hierarchical methods including agglomerative and divisive approaches, model-based methods using mixtures of Gaussians and expectation-maximization, and density-based techniques such as DBSCAN. It discusses applications of clustering, evaluates clustering quality, and covers requirements and challenges for clustering large datasets.
Machine learning can be categorized into three main types: supervised learning, unsupervised learning, and reinforcement learning. Supervised learning uses labeled data to predict output values, examples include linear regression, decision trees, random forests, boosting trees, and neural networks. Unsupervised learning finds hidden patterns in unlabeled data, common techniques are clustering algorithms like K-means, Gaussian mixture models, and hierarchical clustering. Reinforcement learning is about an agent learning through trial-and-error interactions with an environment to maximize rewards, it has been used by Google to reduce energy consumption by 15%.
This presentation discusses about following topics:
Types of Problems Solved Using Artificial Intelligence Algorithms
Problem categories
Classification Algorithms
Naive Bayes
Example: A person playing golf
Decision Tree
Random Forest
Logistic Regression
Support Vector Machine
Support Vector Machine
K Nearest Neighbors
K-Means clustering uses an iterative procedure which is very much sensitive and dependent upon the initial centroids. The initial centroids in the k-means clustering are chosen randomly, and hence the clustering also changes with respect to the initial centroids. This paper tries to overcome this problem of random selection of centroids and hence change of clusters with a premeditated selection of initial centroids. We have used the iris, abalone and wine data sets to demonstrate that the proposed method of finding the initial centroids and using the centroids in k-means algorithm improves the clustering performance. The clustering also remains the same in every run as the initial centroids are not randomly selected but through premeditated method.
This document discusses various classification algorithms including logistic regression, Naive Bayes, support vector machines, k-nearest neighbors, decision trees, and random forests. It provides examples of using logistic regression and support vector machines for classification tasks. For logistic regression, it demonstrates building a model to classify handwritten digits from the MNIST dataset. For support vector machines, it uses a banknote authentication dataset to classify currency notes as authentic or fraudulent. The document discusses evaluating model performance using metrics like confusion matrix, accuracy, precision, recall, and F1 score.
The document examines using a nearest neighbor algorithm to rate men's suits based on color combinations. It trained the algorithm on 135 outfits rated as good, mediocre, or bad. It then tested the algorithm on 30 outfits rated by a human. When trained on 135 outfits, the algorithm incorrectly rated 36.7% of test outfits. When trained on only 68 outfits, it incorrectly rated 50% of test outfits, showing larger training data improves accuracy. It also tested using HSL color representation instead of RGB with similar results.
The document proposes a handwritten digit recognition system using an ensemble of artificial neural networks. It extracts features from images using CNN and trains multiple classifiers on different feature sets, including MLP, random forests, KNN, naive Bayes and decision trees. The classifiers are fused at multiple levels to improve performance and stability compared to a single classifier. Testing on the MNIST dataset, the ensemble approach achieves over 98% classification accuracy.
In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
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2. What is machine learning?
● Give learning abilities to computers rather than defining all states
● Uses subfields of AI - computational learning theory and pattern recognition
● Make computer programs work on two special stages “Train” and “Predict”
2
3. Machine learning vs conditional programming
Conditional programming uses the simple if-then
else rules
Problem : Detect flower name by its features
Conditional approach - use if-else rules for all states
AI approach - Train ML model and predict the result.
3
4. Supervised learning
Supervised learning is the machine learning task of inferring a function from
labeled training data. The training data consist of a set of training examples.
4
7. 1. Decision Tree
Decision tree builds
classification model using tree
structure.
It breaks down a dataset into
smaller and smaller subsets.
Finding the optimal decision
tree is np-hard
So we use greedy technique
7
8. Decision tree algorithm
1. starting with whole training data
2. select attribute or value along dimension that gives “best” split
3. create child nodes based on split
4. recurse on each child using child data until a stopping criterion is reached
• all examples have same class - Entropy is 0
• amount of data is too small - < Min_samples_split
• tree too large
Problem: How do we choose the “best” attribute?
8
9. Simple Example
Weekend (Example) Weather Parents Money Decision (Category)
W1 Sunny Yes Rich Cinema
W2 Sunny No Rich Tennis
W3 Windy Yes Rich Cinema
W4 Rainy Yes Poor Cinema
W5 Rainy No Rich Stay in
W6 Rainy Yes Poor Cinema
W7 Windy No Poor Cinema
W8 Windy No Rich Shopping
W9 Windy Yes Rich Cinema
W10 Sunny No Rich Tennis
9
11. Decision tree
When Parent is the splitter entropy is
1.571
Parameters
Criterion = entropy*, gini(default)
Splitter = best(default)*, random
Min_samples_split = 2* (default)
* - used in here
11
12. How prediction works
Today is windy. I have money and parents not
at home. Predict what I will do??
Weather = “Windy” 1
Parent = “No” 0
Money = “Rich” 1
classified=[0, 1, 0, 0] I may start shopping!
12
15. 2. Naive bayes
It is a classification technique based on Bayes’ Theorem with an assumption
of independence among predictors.
Primarily used for text classification which involves high dimensional training
data sets.
Example : Spam filtration, Sentimental analysis, and classifying news
articles.
Bayes theorem provides a way of calculating posterior probability P(c|x) from
P(c), P(x) and P(x|c).
15
16. P(c|x) is the posterior probability of class (c,target) given predictor (x,
attributes).
● P(c) is the prior probability of class.
● P(x|c) is the likelihood which is the probability of predictor given class.16
17. How Naive Bayes algorithm works?
Example :
Take training data set of weather and corresponding target variable ‘Play’
(suggesting possibilities of playing). Then classify whether players will play
or not based on weather condition.
Let’s follow the below steps to perform it…
17
18. Steps:
1. Convert the data set into a frequency table.
2. Create Likelihood table by finding the probabilities. (Overcast
probability=0.29 and probability of playing is 0.64)
18
19. 3. Use Naive bayesian equation to calculate the posterior probability for
each class. The class with the highest posterior probability is the outcome
of prediction.
Problem: Players will play if weather is sunny. Is this statement is correct?
Solution: Solve it using the method of posterior probability.
P(Yes|Sunny)=P(Sunny|Yes)*P(Yes) / P(Sunny)
Here, P(Sunny|Yes)=3/9=0.33
P(Sunny)=5/14=0.36,
P(Yes)=9/14=0.64
P(Yes|Sunny)=0.33*0.64/0.36=0.60
19
23. 3. k-Nearest Neighbour
Introduction
The KNN algorithm is a robust and versatile classifier that is often
used as a benchmark for more complex classifiers such as Artificial
Neural Networks (ANN) and Support Vector Machines (SVM).
Despite its simplicity, KNN can outperform more powerful classifiers
and is used in a variety of applications such as economic forecasting,
data compression and genetics.
23
24. What is KNN?
KNN falls in the supervised learning family of algorithms. Informally,
this means that we are given a labelled dataset consisting of training
observations (x,y)(x,y) and would like to capture the relationship
between xx and yy. More formally, our goal is to learn a function
h:X→Yh:X→Y so that given an unseen observation xx, h(x)h(x) can
confidently predict the corresponding output.
● KNN is non-parametric, instance-based and used in a supervised
learning setting.
● Minimal training but expensive testing. 24
25. How does KNN work?
The K-nearest neighbor algorithm essentially boils down to forming a majority vote
between the K most similar instances to a given “unseen” observation. Similarity is
defined according to a distance metric between two data points. A popular choice
is the Euclidean distance given by
25
26. How it works(cont...)
1. Assign k value preferably a small odd number.
2. Find the closest number of k points.
3. Assign the new point from the majority of classes.
26
28. When K is small, we are restraining the region of a given prediction and forcing
our classifier to be “more blind” to the overall distribution. A small value for K
provides the most flexible fit, which will have low bias but high variance.
Graphically, our decision boundary will be more jagged.
28
29. On the other hand, a higher K averages more voters in each prediction and hence
is more resilient to outliers. Larger values of K will have smoother decision
boundaries which means lower variance but increased bias.
29
32. Unsupervised learning - Clustering
● organization of unlabeled data
into similarity groups
● Three types of clustering
techniques
Hierarchical
Partitional
Bayesian
32
33. Clustering Algorithms
K-means
● Partitional clustering algorithm
● Choose k(random) data points(seeds) to be the initial centroids
● Assign each data points to the closest centroid
33
35. 4. K-means
Algorithm
● Decide value for k
● Initialize the k cluster centers
● Assigning objects into nearest clusters
● Re-estimate the cluster centers
● If objects are not change the membership,exit and go to fourth step
35