io.github.kju2.languagedetector:language-detector
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Detect the language of a given text. This library is able to distinguish 68 languages.
Language Detection Library for Java
<dependency>
<groupId>io.github.kju2.languagedetector</groupId>
<artifactId>language-detector</artifactId>
<version>1.0.3</version>
</dependency>
LanguageDetector detector = new LanguageDetector();
String text = "This is the text you want to know the language it is written in.";
Language detectedLanguage = detector.detectPrimaryLanguageOf(text);
You can create a language profile for your own language easily. See https://github.com/optimaize/language-detector/blob/master/src/main/resources/README.md
The software uses language profiles which were created based on common text for each language. N-grams http://en.wikipedia.org/wiki/N-gram were then extracted from that text, and that's what is stored in the profiles.
When trying to figure out in what language a certain text is written, the program goes through the same process: It creates the same kind of n-grams of the input text. Then it compares the relative frequency of them, and finds the language that matches best.
This software does not work as well when the input text to analyze is short, or unclean. For example tweets.
When a text is written in multiple languages, the default algorithm of this software is not appropriate. You can try to split the text (by sentence or paragraph) and detect the individual parts. Running the language guesser on the whole text will just tell you the language that is most dominant, in the best case.
This software cannot handle it well when the input text is in none of the expected (and supported) languages. For example if you only load the language profiles from English and German, but the text is written in French, the program may pick the more likely one, or say it doesn't know. (An improvement would be to clearly detect that it's unlikely one of the supported languages.)
If you are looking for a language detector / language guesser library in Java, this seems to be the best open source library you can get at this time. If it doesn't need to be Java, you may want to take a look at https://code.google.com/p/cld2/
If your language is not supported yet, then you can provide clean "training text", that is, common text written in your language. The text should be fairly long (a couple of pages at the very least). If you can provide that, please open a ticket.
If your language is supported already, but not identified clearly all the time, you can still provide such training text. We might then be able to improve detection for your language.
If you're a programmer, dig in the source and see what you can improve. Check the open tasks.
This project is a fork of a fork, the original author is Nakatani Shuyo. For detail see https://github.com/optimaize/language-detector/wiki/History-and-Changes
Apache 2 (business friendly)
Nakatani Shuyo, Fabian Kessler, Francois ROLAND, Robert Theis, Kju2
For detail see https://github.com/optimaize/language-detector/wiki/Authors
FAQs
Detect the language of a given text. This library is able to distinguish 68 languages.
We found that io.github.kju2.languagedetector:language-detector demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 0 open source maintainers collaborating on the project.
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