Alibaba Cloud Developer

Oct 10, 2018 · Artificial Intelligence

How Virtual Category Trees Boost E‑Commerce Search and Recommendation

This article explains how Alibaba builds a virtual category (CPV) system for Taobao by merging similar categories, splitting overly coarse ones, and constructing a hierarchical virtual category tree using methods such as PMI, title term similarity, frequent itemset mining, and graph‑embedding techniques, ultimately reducing user fatigue and improving CTR.