Web retrieval systems and the Greek language: do they have an understanding?

Searching the web is a common activity of web users. English and non-English speakers utilize international or local search engines so as to satisfy their information needs. Most of the attempts at evaluation of search engines focus on English queries and on English document collections. In this paper an evaluation methodology is presented and the capabilities of international and local web retrieval systems using Greek queries are evaluated based on this method. We aim at identifying difficulties and knowledge requirements when using a Greek supporting search engine. The importance of interface localization and the effects of standard information retrieval techniques such as case insensitivity, stopword removal and simple stemming are studied in international and local search engines. The evaluation methodology is applicable to other non-English natural languages as well.