machine learningmasoudkaviani.ir/wp-content/uploads/2017/08/data-mining... · 2017. 8. 18. · a...
TRANSCRIPT
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Machine LearningIn PHP
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What is Data Mining and Machine Learning
Source: [1]
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It’s All About Feature Extraction
Source: [2]
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Users Of Websites
# page1 page2 page3 page4 product1
product2
product3
product4
product5
Buy Status
user1 0 0 0 1 0 0 1 1 0 No
user2 1 0 0 0 0 1 1 0 0 Yes
user3 0 0 1 0 1 1 0 0 0 No
...
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Type Of Machine Learning
Classification: KNN, SVM, MLP, C4.5, RandomForest
Clustering: KMeans, DBSCAN, OPTICS
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How many of you, Love PHP?
PHP
Source: [3]
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How many of you, ,Hate?
PHP
Source: [4]
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Data Mining Is About to Matrix
Matrix
Source: [5]
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A Benchmark, PHP VS Python
Problem: Fine All Prime Number Below 10000
PHP 1.39Python 1.84
Source: [6]
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Another Benchmark, PHP VS Python
Problem2: 2000000 Time Calculating MD5(N+N)
> So, PHP5 Is Not Good For Computation
PHP5 21.43Python 9.87
Source: [6]
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Languages that Companies Used Fro ML
Source: [11
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Any Q Bro?
Source: [7]
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But Wait, Something Change these days
Source: [8]
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ComparisonSource: [6]
Source: [8]
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A Little About Optimization
> You Want to Optimize IO?
1. High Level Optimization ⇒ Disk IO
2. Low Level Optimization ⇒ RAM IO
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We Focus On Low Level Optimization
> You Want to Optimize IO?
1. High Level Optimization ⇒ Disk IO
2. Low Level Optimization ⇒ RAM IO
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Cache Vs RAM Access Time
Source: [9]
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We must Optimize these 3:
1. Memory Allocation2. Memory Usage3. Memory Indirection
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Something Improved IN PHP7
> Ints, Floats
> Objects
> Strings
> Arrays → HashTables
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Something Improved IN PHP7
> Ints, Floats
> Objects
> Strings
> Arrays → HashTables
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PHP 5(Core Variables)
Behind All PHP Variables There is a ZVAL C struct:typedef union _zvalue_value { long lval; double dval; struct { char *val; int len; } str; HashTable *ht; zend_object_value obj;} zvalue_value;
Source: [10]
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PHP 7(Core Variables)
Behind All PHP Variables There is a ZVAL C struct:typedef union _zend_value { zend_long lval; double dval; zend_refcounted *counted; zend_string *str; zend_array *arr; zend_object *obj; zend_resource *res; zend_reference *ref; zend_ast_ref *ast; zval *zv; void *ptr; zend_class_entry *ce; zend_function *func; struct { uint32_t w1; uint32_t w2; } ww;} zend_value; Source: [10]
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What is The Difference In Arrays(5 vs 7)?
PHP5 PHP7
Allocations: 2 + 2 per element
2 + 0 per element
Size: 72 + 112 per element
56 + 36 per element
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Now, What tools to use?
https://github.com/gburtini/Learning-Library-for-PHP
Fork: 74 Star: 246
DBScan, Kmeans, KNN, Markov Chain, Naive Bayes and ...
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A Better Tool
https://github.com/php-ai/php-ml > Only For PHP 7
Fork: 493 Star: 3988
SVC, KNN, KMean, Naive Bayes, SVR, Least Square and ...
Cross Validation, Normalization, TF-IDf, Metrics and …
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Hybrid Approaches
Use PHP with these services:
> Amazon Machine Learning
> Python Core with Tensorflow, Scikit and …
> Google Cloud Prediction API
> IBM Watson
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Any Question Again?
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Images and Contents Sources[1] http://blog.kaggle.com/2015/04/22/scikit-learn-video-3-machine-learning-first-steps-with-the-iris-dataset/
[2] http://sebastianraschka.com/Articles/2015_pca_in_3_steps.html
[3] http://www.designbolts.com/
[4] https://openclipart.org/detail/213226/broken-heart-icon
[5] http://beirutpress.net/article/311667
[6] http://www.hurricanesoftwares.com/php-vs-python-analysis/
[7] http://www.bartarinha.ir/fa/news/332320/%D8%A7%D9%87%D9%85%DB%8C%D8%AA-%D8%A7%D8%B5%D8%BA%D8%B1-%D9%81%D8%B1%D9%87%D8%A7%D8%AF%DB%8C-%D8%A8%D9%88%D8%AF%D9%86
[8] https://owncloud.org/blog/php-7-is-here-and-owncloud-is-ready/
[9] https://www.slideshare.net/chris1adkin/sql-server-engine-cpu-cache-as-the-new-ram
[10] http://www.phpinternalsbook.com/
[11] https://www.ibm.com/developerworks/community/blogs/jfp/entry/What_Language_Is_Best_For_Machine_Learning_And_Data_Science?lang=en
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Where Am I:
Website: MasoudKaviani.ir
Telegram: masoud_kaviani
Instagram: masoudkaviani
Twitter: masoud_kaviani