A Scala wrapper for morphological analyzer Yandex.MyStem

Introduction

Details about the algorithm can be found in I. Segalovich «A fast morphological algorithm with unknown word guessing induced by a dictionary for a web search engine», MLMTA-2003, Las Vegas, Nevada, USA.

The wrapper's code in under MIT license, but please remember that Yandex.MyStem is not open source and licensed under conditions of the Yandex License.

System Requirements

The wrapper should at least work on Ubuntu Linux 12.04+, Windows 7+ (+ people say it also works on OS X).

Install

Maven

Maven central

<dependency>
  <groupId>ru.stachek66.nlp</groupId>
  <artifactId>mystem-scala</artifactId>
  <version>0.1.6</version>
</dependency>

Issues

Only mystem 3.{0,1} are supported currently. Please create issues for compatibility troubles and other requests.

Examples

Probably the most important thing to remember when working with mystem-scala is that you should have just one MyStem instance per mystem/mystem.exe file in your application.

Scala

import java.io.File

import ru.stachek66.nlp.mystem.holding.{Factory, MyStem, Request}

object MystemSingletonScala {

  val mystemAnalyzer: MyStem =
    new Factory("-igd --eng-gr --format json --weight")
      .newMyStem(
        "3.0",
        Option(new File("/home/coolguy/coolproject/3dparty/mystem"))).get()
}

object AppExampleScala extends App {

  MystemSingletonScala
    .mystemAnalyzer
    .analyze(Request("Есть большие пассажиры мандариновой травы"))
    .info
    .foreach(info => println(info.initial + " -> " + info.lex))
}

Java

import ru.stachek66.nlp.mystem.holding.Factory;
import ru.stachek66.nlp.mystem.holding.MyStem;
import ru.stachek66.nlp.mystem.holding.MyStemApplicationException;
import ru.stachek66.nlp.mystem.holding.Request;
import ru.stachek66.nlp.mystem.model.Info;
import scala.Option;
import scala.collection.JavaConversions;

import java.io.File;

public class MyStemJavaExample {

    private final static MyStem mystemAnalyzer =
            new Factory("-igd --eng-gr --format json --weight")
                    .newMyStem("3.0", Option.<File>empty()).get();

    public static void main(final String[] args) throws MyStemApplicationException {

        final Iterable<Info> result =
                JavaConversions.asJavaIterable(
                        mystemAnalyzer
                                .analyze(Request.apply("И вырвал грешный мой язык"))
                                .info()
                                .toIterable());

        for (final Info info : result) {
            System.out.println(info.initial() + " -> " + info.lex() + " | " + info.rawResponse());
        }
    }
}

How to Cite

The references to this repository are highly appreciated, if you use our work.

@misc{alekseev2018mystemscala, 
    author = {Anton Alekseev}, 
    title = {mystem-scala}, 
    year = {2018}, 
    publisher = {GitHub}, 
    journal = {GitHub repository}, 
    howpublished = {\url{https://github.com/alexeyev/mystem-scala/}}, 
    commit = {the latest commit of the codebase you have used}
}

If you do cite it, please do not forget to cite the original algorithm's author's paper as well.

Contacts

Anton Alekseev anton.m.alexeyev@gmail.com

Thanks for reviews, reports and contributions

• Vladislav Dolbilov, @darl
• Mikhail Malchevsky
• @anton-shirikov
• Filipp Malkovsky
• @dizzy7

Also please see

• https://tech.yandex.ru/mystem/
• https://nlpub.ru/Mystem
• https://github.com/Digsolab/pymystem3