Genetic algorithms are a type of evolutionary algorithm that mimics natural selection. They operate on a population of potential solutions applying operators like selection, crossover and mutation to produce the next generation. The algorithm iterates until a termination condition is met, such as a solution being found or a maximum number of generations being produced. Genetic algorithms are useful for optimization and search problems as they can handle large, complex search spaces. However, they require properly defining the fitness function and tuning various parameters like population size, mutation rate and crossover rate.
The GENETIC ALGORITHM is a model of machine learning which derives its behavior from a metaphor of the processes of EVOLUTION in nature. Genetic Algorithm (GA) is a search heuristic that mimics the process of natural selection. This heuristic (also sometimes called a metaheuristic) is routinely used to generate useful solutions to optimization and search problems.
Guest Lecture about genetic algorithms in the course ECE657: Computational Intelligence/Intelligent Systems Design, Spring 2016, Electrical and Computer Engineering (ECE) Department, University of Waterloo, Canada.
Genetic Algorithm (GA) is a search-based optimization technique based on the principles of Genetics and Natural Selection. It is frequently used to find optimal or near-optimal solutions to difficult problems which otherwise would take a lifetime to solve. It is frequently used to solve optimization problems, in research, and in machine learning.
The GENETIC ALGORITHM is a model of machine learning which derives its behavior from a metaphor of the processes of EVOLUTION in nature. Genetic Algorithm (GA) is a search heuristic that mimics the process of natural selection. This heuristic (also sometimes called a metaheuristic) is routinely used to generate useful solutions to optimization and search problems.
Guest Lecture about genetic algorithms in the course ECE657: Computational Intelligence/Intelligent Systems Design, Spring 2016, Electrical and Computer Engineering (ECE) Department, University of Waterloo, Canada.
Genetic Algorithm (GA) is a search-based optimization technique based on the principles of Genetics and Natural Selection. It is frequently used to find optimal or near-optimal solutions to difficult problems which otherwise would take a lifetime to solve. It is frequently used to solve optimization problems, in research, and in machine learning.
Presentation is about genetic algorithms. Also it includes introduction to soft computing and hard computing. Hope it serves the purpose and be useful for reference.
This presentation is intended for giving an introduction to Genetic Algorithm. Using an example, it explains the different concepts used in Genetic Algorithm. If you are new to GA or want to refresh concepts , then it is a good resource for you.
Data Science - Part XIV - Genetic AlgorithmsDerek Kane
This lecture provides an overview on biological evolution and genetic algorithms in a machine learning context. We will start off by going through a broad overview of the biological evolutionary process and then explore how genetic algorithms can be developed that mimic these processes. We will dive into the types of problems that can be solved with genetic algorithms and then we will conclude with a series of practical examples in R which highlights the techniques: The Knapsack Problem, Feature Selection and OLS regression, and constrained optimizations.
In computer science and operations research, a genetic algorithm (GA) is a metaheuristic inspired by the process of natural selection that belongs to the larger class of evolutionary algorithms (EA). Genetic algorithms are commonly used to generate high-quality solutions to optimization and search problems by relying on bio-inspired operators such as mutation, crossover and selection.
This is an easy introduction to the concept of Genetic Algorithms. It gives Simple explanation of Genetic Algorithms. Covers the major steps that are required to implement the GA for your tasks.
For other resources visit: http://pimpalepatil.googlepages.com/
For more information mail me on pbpimpale@gmail.com
Presentation is about genetic algorithms. Also it includes introduction to soft computing and hard computing. Hope it serves the purpose and be useful for reference.
This presentation is intended for giving an introduction to Genetic Algorithm. Using an example, it explains the different concepts used in Genetic Algorithm. If you are new to GA or want to refresh concepts , then it is a good resource for you.
Data Science - Part XIV - Genetic AlgorithmsDerek Kane
This lecture provides an overview on biological evolution and genetic algorithms in a machine learning context. We will start off by going through a broad overview of the biological evolutionary process and then explore how genetic algorithms can be developed that mimic these processes. We will dive into the types of problems that can be solved with genetic algorithms and then we will conclude with a series of practical examples in R which highlights the techniques: The Knapsack Problem, Feature Selection and OLS regression, and constrained optimizations.
In computer science and operations research, a genetic algorithm (GA) is a metaheuristic inspired by the process of natural selection that belongs to the larger class of evolutionary algorithms (EA). Genetic algorithms are commonly used to generate high-quality solutions to optimization and search problems by relying on bio-inspired operators such as mutation, crossover and selection.
This is an easy introduction to the concept of Genetic Algorithms. It gives Simple explanation of Genetic Algorithms. Covers the major steps that are required to implement the GA for your tasks.
For other resources visit: http://pimpalepatil.googlepages.com/
For more information mail me on pbpimpale@gmail.com
advance operators.
explain about the diploid , dominance, and partial match crossover and the order crossover
Technologies
Multi objective optimization , knowledge base technologies hibrid, parallel computing
Application of genetic algorithm to the optimization of resonant frequency of...IOSR Journals
Microstrip antenna is gathering a lot of interest in communication systems. Genetic algorithm is a
popular optimization technique and has been introduced for design optimization of microstrip patch antenna. In
this paper, genetic algorithm has been used for optimization of resonant frequency of coaxially fed rectangular
microstrip antenna. The investigation is made at 3 different frequencies 3GHz, 5GHz and 10GHz respectively.
Patch length, patch width & feed position are taken as optimization parameters. Return loss and radiation
pattern for the optimized antenna are verified using IE3D software. Accuracy of the results encourages the use
of genetic algorithm.
Presentasi dari Sanrio Hernanto, Crew dari Agate Studio dalam event Talent Development Saturday Agate Studio. http://agatestudio.com
Talent Development Saturday adalah acara Agate Studio crew sharing berbagai topik. Mulai dari Art, Programming, Game Production dan General Business/Management. TDS ini dilakukan tanggal 8 Februari 2014 di Bandung Digital Valley.
A Practical Schema Theorem for Genetic Algorithm Design and Tuningkknsastry
This paper develops the theory that can enable the design of genetic algorithms and choose the parameters such that the proportion of the best building blocks grow. A practical schema theorem has been used for this purpose and its ramification for the choice of selection operator and parameterization of the algorithm is explored. In particular stochastic universal selection, tournament selection, and truncation selection schemes are employed to verify the results. Results agree with the schema theorem and indicate that it must be obeyed in order to ascertain sustained growth of good building blocks. The analysis suggests that schema theorem alone is insufficient to guarantee the success of a selectorecombinative genetic algorithm.
Effects of population initialization on differential evolution for large scal...Borhan Kazimipour
This work provides an in-depth investigation of the effects of population initialization on Differential Evolution (DE) for dealing with large scale optimization problems. Firstly, we conduct a statistical parameter sensitive analysis to study the effects of DE’s control parameters on its performance of solving large scale problems. This study reveals the optimal parame- ter configurations which can lead to the statistically superior performance over the CEC-2013 large-scale test problems. Thus identified optimal parameter configurations interestingly favour much larger population sizes while agreeing with the other parameter settings compared to the most commonly employed parameter configuration. Based on one of the identified optimal configurations and the most commonly used configuration, which only differ in the population size, we investigate the influence of various population initialization techniques on DE’s performance. This study indicates that initialization plays a more crucial role in DE with a smaller population size. However, this observation might be the result of insufficient convergence due to the use of a large population size under the limited computational budget, which deserve more investigations.
This presentation provides an introduction to the Genetic algorithms topic, it shows the GA operators and parameters , advantages, limitations and the related applications.
Volume of data available in the digital world is increasing every day at a greater speed. Due to enhancement of various technologies and new algorithms, extraction of essential data from huge volume of data is not a tough task nowadays but our goal is the extraction of patterns and knowledge from large amounts of data. Different sources are available for collecting the reviews about a product. To enhance the quality of the products and services these reviews provides different features of the products. Models can use one or more classifiers in trying to determine the probability of a set of data belonging to another set, say spam or 'ham'. Depending on definitional boundaries, modeling is synonymous with, the field of machine learning, as it is more commonly referred to in academic or research and development contexts. In this paper we identified and discussed about three algorithms which are efficient in identifying essential patterns in the available huge volume of data.
Traveling Salesman Problem (TSP) is a kind of NPHard problem which cant be solved in polynomial time for
asymptotically large values of n. In this paper a balanced combination of Genetic algorithm and Simulated Annealing is used. To
improve the performance of finding optimal solution from huge
search space, we have incorporated the use of tournament and
rank as selection operator. And Inver-over operator Mechanism
for crossover and mutation . To illustrate it more clearly an
implementation in C++ (4.9.9.2) has been done.
Index Terms—Genetic Algorithm (GA) , Simulated Annealing
(SA) , Inver-over operator , Lin-Kernighan algorithm , selection
operator , crossover operator , mutation operator.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERSveerababupersonal22
It consists of cw radar and fmcw radar ,range measurement,if amplifier and fmcw altimeterThe CW radar operates using continuous wave transmission, while the FMCW radar employs frequency-modulated continuous wave technology. Range measurement is a crucial aspect of radar systems, providing information about the distance to a target. The IF amplifier plays a key role in signal processing, amplifying intermediate frequency signals for further analysis. The FMCW altimeter utilizes frequency-modulated continuous wave technology to accurately measure altitude above a reference point.
2. Maxima and Minima from Calculus
•Great powers of calculus is in the determination of the
maximum or minimum value of a function.
•Take f(x) to be a function of x. Then the value of x for
which the derivative of f(x) with respect to x is equal
to zero corresponds to a maximum, a minimum or an
inflexion point of the function f(x).
3. • The height of a projectile that is fired straight up is given by the
motion equations
4.
5.
6.
7. Classes of Search Techniques
Finonacci Newton
Direct methods Indirect methods
Calculus-based techniques
Evolutionarystrategies
Centralized Distributed
Parallel
Steady-state Generational
Sequential
Genetic algorithms
Evolutionary algorithms Simulated annealing
Guided random search techniques
Dynamic programming
Enumerative techniques
Search techniques
8. Genetic Algorithms is the most
commonly used prominent
computational algorithm introduced by
I. Rechenberg in 1960’s and developed
by John Holland in 1975. This
evolutionary algorithm mimics the
Darwin’s theory of evolution by natural
selection for problem solving.
10. Simple Genetic Algorithm
{
initialize population;
evaluate population;
while Termination Criteria Not Satisfied
{
select parents for reproduction;
perform crossover and mutation;
evaluate population;
}
}
11. The GA Cycle of Reproduction
reproduction
population evaluation
modification
discard
deleted
members
parents
children
modified
children
evaluated children
12. Population
Chromosomes could be:
• Bit strings (0101 ... 1100)
• Real numbers (43.2 -33.1 ... 0.0 89.2)
• Permutations of element (E11 E3 E7 ... E1 E15)
• Lists of rules (R1 R2 R3 ... R22 R23)
• Program elements (genetic programming)
• ... any data structure ...
population
13. Population Size
Population size depicts the number of
chromosomes in one generation. If the population
size is very small, then only a small part of the
search space is explored. Whereas, if the
population size is too large then a very large part of
the search space is explored and due to obvious
reasons the algorithm slows down.
14. Selection
• Best chromosomes are selected from the population to form the
parents for next generation
• The different selection methods for choosing the best chromosomes
are
(i) Roulette Wheel Selection,
(ii) Tournament Selection,
(iii) Rank Selection,
(iv) Boltzman Selection,
(v) Steady-State Selection, etc.
15. Roulette Wheel Selection
Better chromosomes have high probability to be selected as new
parents. The probability of each individual chromosome getting
selected is given by the equation.
𝑃𝑖 =
𝑓 𝑖
𝑗=1
𝑁 𝑓 𝑖
where,
fi is the fitness of the individual i in the population
N is the number of individuals in the population
23. Arithmetic Crossover
Crossover is a critical feature of genetic algorithms:
•It greatly accelerates search early in evolution of a
population
•It leads to effective combination of schemata
(subsolutions on different chromosomes)
26. Mutation: Local Modification
Before: (1 0 1 1 0 1 1 0)
After: (0 1 1 0 0 1 1 0)
Before: (1.38 -69.4 326.44 0.1)
After: (1.38 -67.5 326.44 0.1)
• Causes movement in the search space
(local or global)
• Restores lost information to the population
27.
28. Exploration: Discovering promising areas in the search space, i.e.
gaining information on the problem
Exploitation: Optimising within a promising area, i.e. using
information
There is co-operation and competition between them
• Crossover is explorative, it makes a big jump to an area
somewhere “in between” two (parent) areas
• Mutation is exploitative, it creates random small diversions,
thereby staying near (in the area of ) the parent
Crossover OR mutation?
29. • Only crossover can combine information from two parents
• Only mutation can introduce new information (alleles)
• Crossover does not change the allele frequencies of the
population
• To hit the optimum you often need a ‘lucky’ mutation
Crossover OR mutation?
30. Evaluation
• The evaluator decodes a chromosome and assigns it a fitness
measure
• The evaluator is the only link between a classical GA and the problem
it is solving
evaluation
evaluated
children
modified
children
31.
32.
33. Deletion
• Generational GA:
entire populations replaced with each iteration
• Steady-state GA:
a few members replaced each generation
population
discard
discarded members
34.
35. Termination
This evolutionary process is continued until the
termination condition is satisfied. The termination
conditions may be:
• Reaching the maximum number of generations
• Successive iteration does not provide proper results
• An optimal fitness value of the population is reached.
42. Consider the problem of maximizing the function,
f(x) = x2
Where x is permitted to vary between 0 to 31.
(i) 0(00000) and 31(11111) code x into finite
length string
(ii) Select initial population at random (size 4)
(iii) Calculate fitness value for all strings
(iv) probability of selection by:
𝑃𝑟𝑜𝑏𝑖=
𝑓(𝑥) 𝑖
𝑖=1
𝑛
𝑓(𝑥) 𝑖
,
50. Advantages of Genetic Algorithm
Parallelism, robustness and liability
Solution space is wider
Handles large, poorly understood search spaces easily
Easily modified for different problems
Easy to discover global optimum
Handles noisy functions as well
Only uses function evaluations
They require no information about the response surface
Perform very well for large-scale optimization problems
Can be employed for a wide variety of optimization problems
The problem has multi objective function
Very robust to difficulties in the evaluation of the objective function
51. Limitations of Genetic Algorithm
The problem of identifying fitness function
Requires large number of fitness function evaluations
The problem of choosing the various parameters like
the size of the population, mutation rate, crossover
rate, the selection method and its strength.
Definition of representation of the problem
No effective terminator
Needs to be coupled with a local search technique
Have trouble finding the exact global optimum