In this paper, we look at the search behavior of users of an academic search engine and in particular, their query patterns following the occurrence of major scientific events. We select Nobel Prize announcements as major scientific events and observe how academic searchers behave in response to their occurrences. We have found unique trends for the academic searchers, which are different from ...

In this paper, we investigate advertisers’ budgeting and bidding strategies across multiple search platforms. Our goal is to characterize equilibrium allocation of a limited budget across platforms and draw managerial insights for both search engines and advertisers. We develop a model with two search engines and budget-limited advertisers who compete to obtain advertising slots across search p...

Search engines allow users to retrieve documents with respect to a given query. These provide advanced search options, such as query operators (e.g., +term, term^10). Previous work studied how query operators are employed by end-users. In this paper, we study the extent to which using query operators may lead to improved results, regardless of specific users. We hypothesize that the proper use ...

Building an efficient and effective search engine requires both science and engineering. In this paper, we discuss the ATIRE search engine developed in our research lab, and both the engineering decisions and research questions that have motivated building ATIRE.

Search engines are among the most popular and useful services on the web. Ingwersen and Järvelin (2005) recommend evaluating an IR system based on how much it helps the user achieve their task effectively and efficiently. Therefore, to evaluate a search engine holistically, the users’ rating of the results should be taken into account. Many previous studies have evaluated the effectiveness of w...

Introduction. Investigates how effectively Web search engines index new sites from different countries. The primary interest is whether new sites are indexed equally or whether search engines are biased towards certain countries. If major search engines show biased coverage it can be considered a significant economic and political problem because of the international nature of the major search ...

The evaluation of search engine effectiveness has gained considerable momentum in the last few years. The effectiveness, measures the ability of the search engine to find the relevant information for the given user query. In recent years considerable research efforts have been devoted in developing semantic search engines aims to improve the traditional information search and retrieval process....

We present a simple model of how a monopolistic search engine optimally determines the average relevance of firms in its search pool. In our model, there is a continuum of consumers, who use the search engine’s pool, and there is a continuum of firms, whose entry to the pool is restricted by a price-per-click set by the search engine. We show that a monopolistic search engine may have an incent...