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210 Commits

Author SHA1 Message Date
Marcin Michalski
db82afa263 Update to phpunit 8 and bump min php to 7.2 (#367) 
* Update to phpunit 8

* Require at least PHP 7.2
 2019-04-10 20:42:59 +02:00
KenorFR
cefb4fc7a7 Ngram word (#370) 
* Add NGramWordTokenizer

* Update doc
Add test
Check coding standards
 2019-04-05 21:23:09 +02:00
Arkadiusz Kondas
dbbce0e066
Implement LabelEncoder (#369) 2019-04-02 11:07:00 +02:00
Marcin Michalski
d3888efa7a Update phpstan & easy coding standard (#366) 2019-03-25 14:55:14 +01:00
Arkadiusz Kondas
5e02b893e9
Fix FilesDataset arrays and TokenCountVectorizer numeric token (#363) 2019-03-20 23:22:45 +01:00
Pol Dellaiera
02dab41830 Provide a new NGramTokenizer with minGram and maxGram support (#350) 
* Issue #349: Provide a new NGramTokenizer.

* Issue #349: Add tests.

* Fixes from code review.

* Implement NGramTokenizer with min and max gram support

* Add missing tests for ngram

* Add info about NGramTokenizer to docs and readme

* Add performance test for tokenization
 2019-02-15 17:31:10 +01:00
Arkadiusz Kondas
d30c212f3b
Check if feature exist when predict target in NaiveBayes (#327) 
* Check if feature exist when predict target in NaiveBayes

* Fix typo
 2018-11-07 09:39:51 +01:00
Arkadiusz Kondas
18c36b971f
Mnist Dataset (#326) 
* Implement MnistDataset

* Add MNIST dataset documentation
 2018-11-07 08:02:56 +01:00
Marcin Michalski
53c5a6b9e5 Update phpstan to 0.10.5 (#320) 2018-10-28 07:44:52 +01:00
Marcin Michalski
0beb407b16 Update easy coding standard to ^5.1 (#317) 2018-10-16 21:42:06 +02:00
Marcin Michalski
d29c5906df Return labels in MultilayerPerceptron output (#315) 2018-10-15 19:47:42 +02:00
Arkadiusz Kondas
e255369636
Fix Imputer docs and check if train data was set (#314) 
* Update docs for Imputer class

* Throw exception when trying to transform imputer without train data

* Update changelog
 2018-10-10 21:36:18 +02:00
Arkadiusz Kondas
8fdb3d11fc
Make SVM non-locale aware (#288) 2018-07-04 23:42:22 +02:00
Tomáš Votruba
46fa2c2cca Update to EasyCodingStandard 4 (#273) 
* update ECS config to v4

* composer: require Symplify 4

* apply coding-standard: use constants over functions, protected setUp() in tests, array indentation

* ecs: add false positive case

* composer: update lock

* bump to ECS 4.4

* update composer.lock

* shorten ECS config name

* ecs: ignore assignments in while()

* fix cs
 2018-06-15 07:57:45 +02:00
Arkadiusz Kondas
a36fe086d3
Add performance test for LeastSquares (#263) 
* Install phpbench 🚀

* Add first benchmark for LeastSquares

* Update README and CONTRIBUTING guide

* Fix typo
 2018-03-10 21:48:16 +01:00
Ivana Momcilovic
af2d732194 KMeans associative clustering (#262) 
* KMeans associative clustering added

* fix travis error

* KMeans will return provided keys as point label if they are provided

* fix travis

* fix travis
 2018-03-08 22:27:16 +01:00
Marcin Michalski
e156076539 Add DecisionTreeLeaf.getNodeImpurityDecrease test (#261) 2018-03-07 23:16:25 +01:00
Yuji Uchiyama
66ca874062 Throw proper exception (#259) 
* Throw proper exception

* Fix coding style
 2018-03-06 23:26:36 +01:00
Marcin Michalski
a40c50b48b Add Optimizer tests and remove initialTheta (#252) 
* Add  Optimizer tests

* Remove Optimizer.initialTheta and rename Optimizer.setInitialTheta to setTheta
 2018-03-04 22:44:22 +01:00
Marcin Michalski
55749c7c92 Add Cluster tests (#254) 2018-03-04 17:06:46 +01:00
Marcin Michalski
33efab20a5 Add LUDecomposition triangular factor tests (#253) 2018-03-04 17:05:25 +01:00
Marcin Michalski
941d240ab6 Add RandomForest exception tests (#251) 2018-03-04 17:02:36 +01:00
Arkadiusz Kondas
8976047cbc
Add removeColumns function to ArrayDataset (#249) 
* Add removeColumns function to ArrayDataset

* Add removeColumns to docs

* Fix cs
 2018-03-03 16:04:21 +01:00
Yuji Uchiyama
af9ccfe722 Add tests for LogisticRegression (#248) 2018-03-03 11:19:58 +01:00
Arkadiusz Kondas
d188790276
Add MLP partial train test after restore from file (#243) 2018-02-26 00:02:04 +01:00
Marcin Michalski
9e375ca544 Ensure DataTransformer::testSet samples array is not empty (#204) 2018-02-25 22:56:36 +01:00
Yuji Uchiyama
4562f1dfc9 Add a SvmDataset class for SVM-Light (or LibSVM) format files (#237) 
* Add data loader for svm format

* Add tests for error cases

* Set proper exception messages

* Add documents

* Add error checking code for invalid column format

* Add missing documents
 2018-02-24 11:17:35 +01:00
Arkadiusz Kondas
a96f03e8dd
Fix Optimizer initial theta randomization (#239) 
* Fix Optimizer initial theta randomization

* Add more tests for LUDecomposition and FuzzyCMeans
 2018-02-23 23:05:46 +01:00
Yuji Uchiyama
add00c6108 Fix apriori keys (#238) 
* Add test to check keys of rules

* Reindex after array_filter/array_unique in Apriori
 2018-02-22 17:02:55 +01:00
Arkadiusz Kondas
0a15561352
Fix KMeans and EigenvalueDecomposition (#235) 
* Fix kmeans cluster and eigenvalue decomposition

* Fix kmeans space

* Fix code style
 2018-02-18 00:09:24 +01:00
Arkadiusz Kondas
16dc16b0d9
Add phpstan strict rules (#233) 
* Add phpstan strict rules

* Fix travis coveralls

* Add phpstan-phpunit strict rules

* Fix eigen decomposition test name and phpstan ingored error
 2018-02-16 07:25:24 +01:00
Marcin Michalski
6ac61a860c Fix 'toSmall' typo (#234) 2018-02-15 18:14:06 +01:00
Arkadiusz Kondas
451f84c2e6 Add SelectKBest docs 2018-02-14 20:34:53 +01:00
Arkadiusz Kondas
b4b190de7f Fix pipeline transformers 2018-02-14 20:34:53 +01:00
Arkadiusz Kondas
998879b6fc Switch SelectKBest constructor parameters 2018-02-14 20:34:53 +01:00
Arkadiusz Kondas
9e5b3a0c69 Implement first regression scoring function UnivariateLinearRegression 2018-02-14 20:34:53 +01:00
Arkadiusz Kondas
fbf84ca95f Implement SelectKBest algo for feature selection 2018-02-14 20:34:53 +01:00
Arkadiusz Kondas
52c9ba8291
Fix: phpunit include tests path (#230) 
* Fix phpunit include path

* Add tests for Covariance
 2018-02-11 18:17:50 +01:00
Yuji Uchiyama
53f8a89556 Fix support of a rule in Apriori (#229) 
* Clean up test code

* Add test to check support and confidence (failed due to a bug)

* Fix support value of rules
 2018-02-11 12:42:46 +01:00
Arkadiusz Kondas
3ba35918a3
Implement VarianceThreshold - simple baseline approach to feature selection. (#228) 
* Add sum of squares deviations

* Calculate population variance

* Add VarianceThreshold - feature selection transformer

* Add docs about VarianceThreshold

* Add missing code for pipeline usage
 2018-02-10 18:07:09 +01:00
Andreas Möller
4b5d57fd6f Enhancement: Flatten directory structure (#220) 2018-02-10 12:08:58 +01:00
Yuji Uchiyama
71cc633c8e Fix apriori generates an empty array as a part of the frequent item sets (#224) 2018-02-07 10:02:38 +01:00
Yuji Uchiyama
ec091b5ea3 Support probability estimation in SVC (#218) 
* Add test for svm model with probability estimation

* Extract buildPredictCommand method

* Fix test to use PHP_EOL

* Add predictProbability method (not completed)

* Add test for DataTransformer::predictions

* Fix SVM to use PHP_EOL

* Support probability estimation in SVM

* Add documentation

* Add InvalidOperationException class

* Throw InvalidOperationException before executing libsvm if probability estimation is not supported
 2018-02-06 20:39:25 +01:00
Jonathan Baldie
c32bf3fe2b Configure an Activation Function per hidden layer (#208) 
* ability to specify per-layer activation function

* some tests for new addition to layer

* appease style CI whitespace issue

* more flexible addition of layers, and developer can pass Layer object in manually

* new test for layer object in mlp constructor

* documentation for added MLP functionality
 2018-02-01 23:15:36 +01:00
Jonathan Baldie
e318921076 Fix string representation of integer labels issue in NaiveBayes (#206) 
* Update NaiveBayes.php

This fixes an issue using string labels that are string representations of integers, e.g. "1998" getting cast to (int)1998.

* Update NaiveBayes.php

fixes superfluous whitespace error

* added tests for naive bayes with numeric labels

* added array_unique

* nested array_flips for speed

* nested the array flips inside the array map

* to appear style CI test
 2018-01-31 21:44:44 +01:00
Yuji Uchiyama
554c86af68 Choose averaging method in classification report (#205) 
* Fix testcases of ClassificationReport

* Fix averaging method in ClassificationReport

* Fix divided by zero if labels are empty

* Fix calculation of f1score

* Add averaging methods (not completed)

* Implement weighted average method

* Extract counts to properties

* Fix default to macro average

* Implement micro average method

* Fix style

* Update docs

* Fix styles
 2018-01-29 18:06:21 +01:00
Marcin Michalski
ba7114a3f7 Add libsvm exception tests (#202) 2018-01-26 22:07:22 +01:00
Arkadiusz Kondas
7435bece34
Add test for Pipeline save and restore with ModelManager (#191) 2018-01-12 10:54:20 +01:00
Yuji Uchiyama
d953ef6bfc Fix the implementation of conjugate gradient method (#184) 
* Add unit tests for optimizers

* Fix ConjugateGradient

* Fix coding style

* Fix namespace
 2018-01-12 10:53:43 +01:00
David Monllaó
e83f7b95d5 Fix activation functions support (#163) 
- Backpropagation using the neuron activation functions derivative
- instead of hardcoded sigmoid derivative
- Added missing activation functions derivatives
- Sigmoid forced for the output layer
- Updated ThresholdedReLU default threshold to 0 (acts as a ReLU)
- Unit tests for derivatives
- Unit tests for classifiers using different activation functions
- Added missing docs
 2018-01-09 11:09:59 +01:00