php-ai / php-ml-examples

PHP-ML - Machine Learning library for PHP - Examples

Examples of the use of PHP-ML library

Projects

Interesting demo/examples projects using php-ml:

• Code Review Estimator - Simple showcase of machine learning for code review cost estimation.

Articles

Many of samples from this repository was used in my articles

• Text data classification with BBC news article dataset
• Clustering Chicago robberies locations with k-means algorithm
• Predict air pollution with k-Nearest Neighbors and PHP

Examples

To test example, select one of the following and run it from main folder (each category has its own folder).

php classification/languageDetection.php

Classification:

• languageDetection.php - classifier build for language detection
• minst.php - recognize handwritten digits from MNIST dataset (to download dataset use bin/download-mnist.sh)
• spamFilter.php - simple spam filter with example dataset
• bbc.php - example of text classification

Regression:

• wineQuality.php - regression model to assess the quality of the wine

License

PHP-ML is released under the MIT Licence. See the bundled LICENSE file for details.

Author

Arkadiusz Kondas (@ArkadiuszKondas)

php-ml-examples's Issues

Mapping from clustering result to sample document

I am trying to cluster some text documents. I am using TfIdfTransformer and DBSCAN. I get the result in array format with some array groups with score numbers. What i like is to map this output with the actual samples, to find out which actual documents are clustered together, is there any easy way to map it ?

new FilesDataset('data/') returns empty

Hi,

I cannot get a result for $dataset. It keeps returning an empty array. Banging my head against the wall trying different solutions. The data is there in plain text, put there by file_put_contents. The data is in data/001.txt. I have tried different subfolder and filename.

Trying to follow the instructions for FilesDataset, and the BBC Text data classification.
Links:
https://php-ml.readthedocs.io/en/latest/machine-learning/datasets/files-dataset/
https://arkadiuszkondas.com/text-data-classification-with-bbc-news-article-dataset/

PHP code is as follows:

`

use Phpml\CrossValidation\StratifiedRandomSplit;
use Phpml\Dataset\FilesDataset;

$dataset = new FilesDataset('data/');

$split = new StratifiedRandomSplit($dataset, 0.2);
$samples = $split->getTrainSamples();

echo $samples[0]; // Mutant book wins Guardian prize ...
`
Any assistance would be great, I can't find any solution for this, and even looking at files and Classes in the app, just cannot figure out what is going wrong. Not getting any errors from PHP.

php-ai/php-ml source code

Hi,
the required php-ai/php-ml seems to be away., where is it gone?

How do LSTM recurrent neural networks work in PHP with this PHP-ML library ???

Hello.

How to make predictions via LSTM type recurrent neural networks algorithm ???

We don't see anywhere in the documentation how to use LSTM-like recurrent neural networks.

How do LSTM recurrent neural networks work in PHP with this library ???

Please reply to us.

Question: Fraud Seller Prediction

I am checking a solution to prevent "fraudster" to create "store/ecommerces" to sell products as a fraud only.

Example:
Product: Stove brand Consul
Price: 100
Real price at normal shoppings: 500

Product: Washing machine Eletroclux
Price: 119
Real price at normal shoppings: 900

I am new in Machine Learning, so I would like a suggestion.

Tags recommendations?

I want to build a system, that recommends tags based on post text.
Can you help me with that?
It is similar to the language example, right? But one post can have more than 1 tag.
Can you help me a bit?

libsvm error

whenever i use the SVC in php-ml i got the next error always?
Fatal error: Uncaught Phpml\Exception\LibsvmCommandException: Failed running libsvm command: "C:\Users\aliam\Desktop\Web Project\We-Drive\View\vendor\php-ai\php-ml\bin\libsvm\svm-train.exe -s 0 -t 0 -c 1000 -n 0.500000 -d 3 -r 0 -p 0.100000 -m 100.000000 -e 0.001000 -h 1 -b 0 "C:\Users\aliam\Desktop\Web Project\We-Drive\View\vendor\php-ai\php-ml\var\phpml642e68b9e1e906.60547680" "C:\Users\aliam\Desktop\Web Project\We-Drive\View\vendor\php-ai\php-ml\var\phpml642e68b9e1e906.60547680-model"" with reason: "operable program or batch file." in C:\Users\aliam\Desktop\Web Project\We-Drive\View\vendor\php-ai\php-ml\src\SupportVectorMachine\SupportVectorMachine.php:163 Stack trace: #0 C:\Users\aliam\Desktop\Web Project\We-Drive\Controller\chatbot.php(33): Phpml\SupportVectorMachine\SupportVectorMachine->train(Array, Array) #1 {main} thrown in C:\Users\aliam\Desktop\Web Project\We-Drive\View\vendor\php-ai\php-ml\src\SupportVectorMachine\SupportVectorMachine.php on line 163

TokenCountVectorizer give null as result

tested via the documentation on latest php-ml

$vectorizer = new TokenCountVectorizer(new WhitespaceTokenizer());

$samples = [
  'Lorem ipsum dolor sit amet dolor',
  'Mauris placerat ipsum dolor',
  'Mauris diam eros fringilla diam',
];

// Build the dictionary.
$vectorizer->fit($samples);

// Transform the provided text samples into a vectorized list.
$test = $vectorizer->transform($samples);

var_dump($test); ===> null