Diversifying Search Results Using Time

For our evaluation setup we considered three categories of history-oriented queries: categories of history-oriented queries : long-lasting wars, recurring events, and famous personalities. For constructing the queries we utilized reliable sources on the Web and data presented in prior research articles [2, 3]. We describe the details next. Queries for long-lasting wars were constructed from the WikiWars corpus [3]. The corpus was created for the purpose of temporal information extraction. The keyword for the wars are given in Table 1a. For ambiguous important events we utilized the set of ambiguous queries used in the work by Gupta and Berberich [2]. The queries used are listed in Table 1b. For famous personalities we utilized a list of most influential people available on the USA Today [4] website. The names of these famous personalities were used based on the intuition that there would important events associated with them at different points of time. The list of all the entities is given in in Table 1c.