A dwell time-based technique for personalised ranking model

Abstract

The aim of a Personalised Ranking Model (PRM) is to filter the topk set of documents from a number of relevant documents matching the search query. Dwell times of previously clicked results have been shown to be valuable for estimating documents’ relevance. The indexing structure of the dwell time is an important parameter. We propose a dwell time-based scoring scheme called Dwell-tf-idf to index text and non-text data, based on which search results are ranked. The effectiveness of incorporating into the ranking process the proposed Dwell-tf-idf scheme is validated by a controlled experiment which shows a significant improvement in the search results within the top-k rank.