[jira] Commented: (TIKA-209) Language detection is weak.

["Jukka Zitting (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TIKA-209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711326#action_12711326 ] 

Jukka Zitting commented on TIKA-209:
------------------------------------

I think something like that would be interesting for Tika. Would you like to contribute a patch?

> Language detection is weak.
> ---------------------------
>
>                 Key: TIKA-209
>                 URL: https://issues.apache.org/jira/browse/TIKA-209
>             Project: Tika
>          Issue Type: Bug
>    Affects Versions: 0.3
>            Reporter: Robert Newson
>
> in org.apache.tika.utils.Utils the getUTF8Reader method assigns a language determination without checking the confidence rating from ICU's CharsetDetector.
> Please add a configurable level (0-100);
> if (language != null && match.getConfidence() > THRESHOLD) {
>   metadata.set(Metadata.CONTENT_LANGUAGE, match.getLanguage());
>   metadata.set(Metadata.LANGUAGE, match.getLanguage());
> }
> Obviously using charset to imply language is generally weak but it would be sufficient if the confidence threshold was controlled. Today, the text "hello" is tagged as French, for example. 

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