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Learning Machine Learning A little intro to a (not that complex) world

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Page 1: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

Learning Machine Learning

A little intro to a (not that complex) world

Page 2: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

About Me

@joel__lord

joellord

Page 3: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Our Agenda for today…

• AI vs ML • Deep Learning &

Neural Networks • Supervised vs

unsupervised • Naïve Bayes Classifier • Genetic Algorithms

Page 4: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 5: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Artificial Intelligence

Artificial intelligence (AI) is intelligence exhibited by machines. In computer science, the field of AI research defines itself as the study of "intelligent agents": any device that perceives its environment and takes actions that maximize its chance of success at some goal.

Page 6: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Artificial Intelligence

“takes actions that maximize its chance of success at some goal”

Page 7: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Examples in real life

Page 8: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Machine Learning

Machine learning (ML) is the subfield of computer science that gives "computers the ability to learn without being explicitly programmed."

Page 9: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 10: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 11: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 12: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 13: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 14: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

“Don’t be afraid of artificial intelligence, be afraid of humanity.”

Page 15: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Deep Learning & Big Data• Explosion of digital data • Can’t be processed with

traditional methods anymore

Page 16: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Neural Networks• Breaking big

problems in small layers

Page 17: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Supervised Learning• Requires feedback • Starts with nothing and increases its understanding

• Useless if the data is of bad quality

• Use cases: • Classification

Page 18: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Unsupervised Learning• There is no feedback • Good in the case of no right or

wrong answer • Helps to identify patterns or data

structures • Use case:

• You might also be interested in…

• Grouping customers by purchasing behaviors

Page 19: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

The Naïve Bayes Classifier

Page 20: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Bayes Theorem

Page 21: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Bayes Theorem

where

Page 22: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Bayes Theorem

•  

Page 23: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Bayes Theorem•  

Page 24: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Naive Bayes Classifier• Let’s look at a concrete

example. • You never know what

you’re gonna get

Page 25: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Probability that a chocolate has nutsNuts No Nuts

Round 25% 75%

Square 75% 25%

Dark 10% 90%

Light 90% 10%

Page 26: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Do round, light chocolates have nuts?Nuts No Nuts

Round 25% 75% 0.25 0.75

Square 75% 25% - -

Dark 10% 90% - -

Light 90% 10% 0.9 0.1

Page 27: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Do round, light chocolates have nuts?Nuts No Nuts

Round 25% 75% 0.25 0.75

Square 75% 25% - -

Dark 10% 90% - -

Light 90% 10% 0.9 0.1

0.225 0.075

Page 28: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Do round, light chocolates have nuts?Nuts No Nuts

Round 25% 75% 0.25 0.75

Square 75% 25% - -

Dark 10% 90% - -

Light 90% 10% 0.9 0.1

0.225 0.075

 

Page 29: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Naïve Bayes Classifier in codevar Classifier = function() { this.dictionaries = {}; };

Classifier.prototype.classify = function(text, group) { };

Classifier.prototype.categorize = function(text) {

};

Page 30: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 31: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Sentiment Analysis• Not Machine

Learning • Uses classifiers and

AFINN-165 (and emojis)

Page 32: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Sentiment Analysis• Javascript: • npm install

sentiment

• PHP: • composer require

risan/sentiment-analysis

https://www.npmjs.com/browse/keyword/sentiment
https://www.npmjs.com/browse/keyword/sentiment
https://www.npmjs.com/browse/keyword/sentiment
https://www.npmjs.com/browse/keyword/sentiment
https://github.com/risan/sentiment-analysis
https://github.com/risan/sentiment-analysis
https://github.com/risan/sentiment-analysis
https://github.com/risan/sentiment-analysis
https://github.com/risan/sentiment-analysis
Page 33: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Genetic Algorithm• Awesome shit!

Page 34: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Genetic Algorithm• Create a population of

random individuals • Keep the closest individuals • Keep a few random

individuals • Introduce random

mutations • Randomly create ”children” • Magically end up with a

valid solution

Page 35: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Genetic Algorithm• Create a population of

random individuals • Keep the closest individuals • Keep a few random

individuals • Introduce random

mutations • Randomly create ”children” • Magically end up with a

valid solution

Page 36: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Genetic Algorithm

Credit: AutoDesk https://autodeskresearch.com/projects/Dreamcatcher

Page 37: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

https://www.youtube.com/watch?v=pgaEE27nsQw

https://www.youtube.com/watch?v=pgaEE27nsQw
https://www.youtube.com/watch?v=pgaEE27nsQw
https://www.youtube.com/watch?v=pgaEE27nsQw
https://www.youtube.com/watch?v=pgaEE27nsQw
https://www.youtube.com/watch?v=pgaEE27nsQw
Page 38: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Boring!

Page 39: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Page 40: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

Genetic Algorithm in code//Declare Consts function randomInt(min, max) {…} function random(min, max) {…} function fitness(individual) {…} function sortByFitness(population) {…} function randomIndividual() {…} function randomPopulation(size) {…} function mutate(population) {…} function reproduce(father, mother) {…} function evolve(population) {…}

function findSolution() { var population = randomPopulation(POP_SIZE); var generation = 0; while (fitness(population[0]) > CLOSE_ENOUGH) { generation++; population = evolve(population); } return {solution: population[0], generations: generation}; }

var sol = findSolution();

Page 41: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

@joel__lord#confoo

What did we learn?• Machine Learning and Artificial Intelligence • Big Data and Deep Learning • Supervised vs unsupervised • Basic Algorithms • Naïve Bayes Classifier • Sentiment Analysis • Genetic Algorithm

• Hopefully, you don’t feel intimidated by ML anymore

Page 42: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

Presented ByJOEL LORD

Confoo, March 2018

@joel__lordjoellord

Thank you!

Page 43: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

Presented ByJOEL LORD

Confoo, March 2018

@joel__lordjoellord

Questions?

Page 44: Learning Machine Learning - Javascript Everything › slides › machinelearning.pdf · Machine Learning Machine learning (ML) is the subfield of computer science that gives "computers

Impact of parameters on Genetic Algorithms


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