- Do you think all of the top 500 word tokens contain valuable information? If not, can you impose another list of stop words?
- Can you use stemming instead of lemmatization to process the newsgroups data?
- Can you increase max_features in CountVectorizer from 500 to 5000 and see how the t-SNE visualization will be affected?
- Try visualizing documents from six topics (similar or dissimilar) and tweak parameters so that the formed clusters look reasonable.
Germany
Slovakia
Canada
Brazil
Singapore
Hungary
Philippines
Mexico
Thailand
Ukraine
Luxembourg
Estonia
Lithuania
Norway
Chile
United States
Great Britain
India
Spain
South Korea
Ecuador
Colombia
Taiwan
Switzerland
Indonesia
Cyprus
Denmark
Finland
Poland
Malta
Czechia
New Zealand
Austria
Turkey
France
Sweden
Italy
Egypt
Belgium
Portugal
Slovenia
Ireland
Romania
Greece
Argentina
Malaysia
South Africa
Netherlands
Bulgaria
Latvia
Australia
Japan
Russia