Abstract

Heterogeneous entities or objects are very common and are usually interrelated with each other in many scenarios. For example, typicalWeb search activities involve multiple types
of interrelated entities such as end users, Web pages, and search queries. In this paper, we define and study a novel problem: Search Heterogeneous INterrelated Entities (SHINE).
Given a SHINE-query which can be any type(s) of entities, the task of SHINE is to retrieve multiple types of related entities to answer this query. This is in contrast to the traditional
search, which only deals with a single type of entities (e.g., Web pages). The advantages of SHINE include: (1) It is feasible for end users to specify their information need along different dimensions by accepting queries with different types. (2) Answering a query by multiple types of entities provides informative context for users to better understand
the search results and facilitate their information exploration. (3) Multiple relations among heterogeneous entities can be utilized to improve the ranking of any particular
type of entities. To attain the goal of SHINE, we propose to represent all entities in a unified space through utilizing their interaction relationships. Two approaches, M-LSA and
E-VSM, are discussed and compared in this paper. The experiments on 3 data sets (i.e., a literature data set, a search engine log data set, and a recommendation data set) show
the effectiveness and exibility of our proposed methods.