Thus we need to leverage on the article content data available at publishing time, such as topics, categories, and tags, to build a content-based model, and match it to readers’ interests learnt from their reading histories.
A news recommendation engine driven by collaborative reader behavior
Yuan Huang
29139

suggested edit for this sentence:
Thus we need to leverage the article content data available at publishing time — such as topics, categories, and tags — to build a content-based model, and match it to readers’ interests learned from their reading histories.