The delta-h package

[Tags:bsd3, library, program]

Implementation of the model described in Grzegorz Chrupała and Afra Alishahi, Online Entropy-based Model of Lexical Category Acquisition, CoNLL 2010

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Versions 0.0.1, 0.0.2, 0.0.3
Dependencies base (>=3 && <5), binary, bytestring, containers, monad-atom, nlp-scores, text [details]
License BSD3
Author Grzegorz Chrupala and Afra Alishahi
Category Natural Language Processing
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Uploaded Tue Jan 10 16:39:34 UTC 2012 by GrzegorzChrupala
Distributions NixOS:0.0.3
Downloads 777 total (3 in the last 30 days)
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Status Docs uploaded by user
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Readme for delta-h

Readme for delta-h-0.0.2


Online entropy-based model of lexical category acquisition.
Grzegorz Chrupala and Afra Alishahi


Install the Haskell Platform:

On linux, the following command will install the delta-h executable in the 
bin directory:

cabal install --prefix=`pwd`


The data directory has an example input file data/goat.txt
The other files are CHILDES.

To induce a model (i.e. a set of clusters), execute the following:

> ./bin/delta-h learn '[-12,0,12]' data/goat.txt

The argument '[-12,0,12]' specifies the features to be used (in this case
preceding bigram, focus word, and following bigram. Feature ids can be
inspected in the source file src/Entropy/Features.hs

The model will be stored in data/goat.txt.[-12,0,12].learn.model

You can display the model in a human-readable format with:

> ./bin/delta-h display  data/goat.txt.[-12,0,12].learn.model

The learned model can also be used to label input data, without
further learning:

> ./bin/delta-h label True True data/goat.txt.[-12,0,12].learn.model < \

The first argument specifies whether to use focus word for labeling,
the second argument whether to avoid outputting new cluster ids (not
in the model).

There is also a command which test the learned model on the word
prediction task:

> ./bin/delta-h eval-mrr True True  data/goat.txt.[-12,0,12].learn.model < \

The first argument specifies whether to marginalize over all cluster
assignments, the second whether to output detailed information.


There are some other (currently undocumented) commands: inspect src/Main.hs

The main part of the model is implemented in src/Entropy/Algorithm.hs.