The Anatomy of Mitos Web Search Engine
  Engineering a Web search engine offering effective and efficient information retrieval is a challenging task. This document presents our experiences from designing and developing a Web search engine offering a wide spectrum of functionalities and we report some interesting experimental results. A rather peculiar design choice of the engine is that its index is based on a DBMS, while some of the distinctive functionalities that are offered include advanced Greek language stemming, real time result clustering, and advanced link analysis techniques (also for spam page detection). 
Panagiotis Papadakos, Giorgos Vasiliadis, Yannis Theoharis, Nikos   Armenatzoglou, Stella Kopidaki, Yannis Marketakis, Manos...