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https://issues.apache.org/jira/browse/FLINK-1999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540137#comment-14540137
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Vassil Dimov edited comment on FLINK-1999 at 5/12/15 4:17 PM:
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Hello [~aalexandrov],
We have two questions about the type of the transformer that you suggested
Point[K, Seq[String]] => Point[K, SparseVector[Double]].
As we understood K should be a specific word from the document and the
SparseVector should contain the single tf-idf values for each document for that
specific word.
Additionally, to be sure that we understood it right, we would like to ask if
the Seq[String] is a sequence of documents that we get as input.
Summarized: The input for the job should be the documents and a specific word.
The output should be the tf-idf values for each document for that word.
was (Author: vsldimov):
Hello [~aalexandrov],
We have two questions about the type of the transformer that you suggested
``Point[K, Seq[String]] => Point[K, SparseVector[Double]]``.
As we understood K should be a specific word from the document and the
SparseVector should contain the single tf-idf values for each document for that
specific word.
Additionally, to be sure that we understood it right, we would like to ask if
the ``Seq[String]`` is a sequence of documents that we get as input.
Summarized: The input for the job should be the documents and a specific word.
The output should be the tf-idf values for each document for that word.
> TF-IDF transformer
> ------------------
>
> Key: FLINK-1999
> URL: https://issues.apache.org/jira/browse/FLINK-1999
> Project: Flink
> Issue Type: New Feature
> Components: Machine Learning Library
> Reporter: Ronny Bräunlich
> Assignee: Alexander Alexandrov
> Priority: Minor
> Labels: ML
>
> Hello everybody,
> we are a group of three students from TU Berlin (I guess we're not the first
> group creating an issue) and we want to/have to implement a tf-idf tranformer
> for Flink.
> Our lecturer Alexander told us that we could get some guidance here and that
> you could point us to an old version of a similar tranformer.
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