Topic Modelling into a Category Tree

Numerical combination of LDA and NMF cascaded with W2V to categorize 1M multi-lingual records into a 275-node, 5-level deep category tree. Mixed were the feelings when I got to know the Top 3 position in Hackathon was a narrow miss by 1 mark. While it was kinda re-assuring to stand 4th among Finalist Teams, despite myself participating alone, the void of one passionate team partner, was quite disquieting. The Hackathon challenge was to multi-categorize 1M multi-lingual articles with meta-information, at high precision. The meta-information denotes the category-tree information hidden in the URL text sequence and also the title of each article.