vocab attribute used for CoherenceWordEmbeddings removed in gensim 4.x

[rbroc]

• Contextualized Topic Models version: 2.2.0
• Python version: 3.8
• Operating System: macOs Monterey 12.5.1

Description

https://github.com/MilaNLProc/contextualized-topic-models/blob/f3225055440b2ebf3bedb7143868954f1e1478d7/contextualized_topic_models/evaluation/measures.py#L166

This line throws an error with gensim>=4.0.0

AttributeError: The vocab attribute was removed from KeyedVector in Gensim 4.0.0.
Use KeyedVector's .key_to_index dict, .index_to_key list, and methods .get_vecattr(key, attr) and .set_vecattr(key, attr, new_val) instead.
See https://github.com/RaRe-Technologies/gensim/wiki/Migrating-from-Gensim-3.x-to-4

There does not seem to be any method that works across both 3.x and 4.x, so this may mean having to pin gensim to 3.x, or bumping to 4.x and replacing self.wv.vocab with self.wv.index_to_key

[vinid]

Thanks!

This probably goes with #113. We need to update all our dependencies.

Thanks a lot!