Information retrieval (IR) has changed considerably in recent years with the expansion of the
World Wide Web and the advent of modern and inexpensive graphical user interfaces and …

Data science applications have become widespread as a means to extract knowledge from
large datasets. Such applications are often characterized by highly heterogeneous and …

The advent of new information retrieval (IR) technologies and approaches to storage and
retrieval provide communities with previously unheard of opportunities for mass …

Modeling large scale Web Search Engines (WSEs) is a complex task. It involves many
issues such as representing user's behavior, query traffic, several strategies and heuristics …

This paper proposes a Colored Petri Net model capturing the behaviour of vertical search
engines. In such systems a query submitted by a user goes through different stages and can …

Large scale Web search engines are complex and highly optimized systems devised to
operate on dedicated clusters of processors. Any, even a small, gain in performance is …

This paper proposes using Coloured Petri Nets to model performance of vertical search
engines for Web search. In such systems, queries submitted by users or client systems are …

Summary Discrete Event System Specification (DEVS) is a formalism for the modeling and
analysis of discrete event systems. Parallel DEVS (PDEVS) is an extension of DEVS for …

Capacity planning studies are suitable for supporting decision making in management and
operation of Web search engines deployed on large clusters of processors. Among many …

Web search engines are built from components capable of processing large amounts of user
queries per second in a distributed way. Among them, the index service computes the top-k …