A PHP implementation of the Rapid Automatic Keyword Extraction (RAKE) algorithm for extracting relevant keywords from individual documents.
You can install the package via composer:
composer require kudashevs/rake-phpHere is a common usage example:
use Kudashevs\RakePhp\Rake;
$text = "Compatibility of systems of linear constraints over the set of natural numbers.";
$text .= "Criteria of compatibility of a system of linear Diophantine equations, strict inequations, and nonstrict inequations are considered.";
$text .= "Upper bounds for components of a minimal set of solutions and algorithms of construction of minimal generating sets of solutions for all types of systems are given.";
$text .= "These criteria and the corresponding algorithms for constructing a minimal supporting set of solutions can be used in solving all the considered types of systems and systems of mixed types";
$rake = new Rake();
$keywords = $rake->extract($text);
print_r($keywords);
// will result in
Array
(
[minimal generating sets] => 8.6666666666667
[linear diophantine equations] => 8.5
[minimal supporting set] => 7.6666666666667
[minimal set] => 4.6666666666667
[linear constraints] => 4.5
[natural numbers] => 4
[strict inequations] => 4
[nonstrict inequations] => 4
[upper bounds] => 4
[mixed types] => 3.6666666666667
[considered types] => 3.1666666666667
[set] => 2
[types] => 1.6666666666667
[considered] => 1.5
[compatibility] => 1
[systems] => 1
[criteria] => 1
[system] => 1
[components] => 1
[solutions] => 1
[algorithms] => 1
[construction] => 1
[constructing] => 1
[solving] => 1
)More information about RAKE and its usage, you can find in the original paper.
The Rake class accepts some configuration options:
'stoplist' => 'string' # A valid txt file with a list of stop words
'exclude' => [] # An array of words that will be excluded from the stoplist
'include' => [] # An array of words that will be included in the stoplist
Note: At the moment of instantiation, the Rake class can throw a few exceptions: InvalidOptionType, WrongStoplistSource.
All of these exceptions extend a built-in InvalidArgumentException class, so they are easy to deal with.
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Note: Please make sure to update tests as appropriate.
The MIT License (MIT). Please see the License file for more information.
