piskvorky/gensim

WikiCorpus.filter_wiki/remove_markup don't remove heading-markup

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#2,561 opened on Jul 26, 2019

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 (8 comments) (0 reactions) (0 assignees)Python (15,144 stars) (4,349 forks)batch import
Hacktoberfestbugdifficulty mediumgood first issuehelp wantedimpact LOWreach LOW

Description

Problem description

I am trying to get clean wiki texts. But still getting headings markup.

Steps/code/corpus to reproduce

Just create WikiCorpus and call get_texts. Some texts will contain ==headings== (different number of = and different headings, of course). Simple test-case:

>>> import gensim.corpora.wikicorpus
>>> print(gensim.corpora.wikicorpus.filter_wiki('===heading==='))
===heading===

Versions

Python 3.7.4 (default, Jul 13 2019, 14:04:11) 
[GCC 8.3.0]
NumPy 1.16.4
SciPy 1.3.0
gensim 3.8.0
FAST_VERSION 1

Contributor guide

Tech stack
python
Domain
data
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Pythonregular expressions
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75
Research direction
The bug is in the `filter wiki` function in `gensim/corpora/wikicorpus.py`. Currently, the regex pattern for removing headings (e.g., `===heading===`) might be missing or incorrect. Investigate the existing regex patterns for wiki markup removal and add or correct the pattern to strip heading markers. Test with the provided example and ensure existing tests still pass.