Dependable Computer Systems by Andrzej Białas (auth.), Wojciech Zamojski, Janusz Kacprzyk,

By Andrzej Białas (auth.), Wojciech Zamojski, Janusz Kacprzyk, Jacek Mazurkiewicz, Jarosław Sugier, Tomasz Walkowiak (eds.)

Dependability research is the new method of functionality assessment of latest platforms which attempts to deal with new demanding situations which are introduced with their unparalleled complexity, measurement and variety. specifically in case of desktops and networks such review has to be in keeping with multidisciplinary method of concept, expertise, and upkeep of platforms which function in actual (and quite often unfriendly) environments. in preference to “classic” reliability which focuses ordinarily on technical facets of approach functioning, dependability reports examine the structures as multifaceted and complex amalgamations of technical, details and likewise human resources.

This monograph provides chosen new advancements in such components of dependability learn as mathematical types, overview of software program, probabilistic evaluation, methodologies, instruments, and applied sciences. clever and delicate computing tools aid to solve primary difficulties of dependability research that are as a result of the truth that in modern desktops it's always tough to discover a relation among method parts and process occasions (the relation among purposes and effects) and it really is much more tricky to outline strict mathematical types with “analytical” relationships among such phenomena.

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2 The Search Process We opted for a system that offers an open search on the web using the following principle: after connecting to the system, the user expresses his information need as a query. The research process therefore takes as input the query and the search operation is initiated by running in parallel the nucleus of each search engine with as only parameter the user query. The obtained result is finally communicated to the user and the evaluation module. Fig. 2 Contextual Evaluation Module To precede with the evaluation of the three search engines, the system retrieves the results of each of them and performs their analysis.

Table 1, summarizes the potential to appeal to context in IR and presents the possible mechanisms of its use. Table 1 Different opportunities to use the context in IR Phase (Where) Usage (How) Examples of work (Who / What) At the beginning of the search process To solve the ambiguous terms problem in the query and improve the quality of the search tool results. [7]: uses ontology with equivalence and subsumption relationships for extracting terms to be added to the initial query. To introduce the spatiotemporal constraints on search algorithms.

6 topics were chosen, to reflect diverse fields of use. These topics are: News, Animals, Movies, Health, Sports and Travel. Each topic was assigned to a group of 4 students who chose freely 5 queries. For example, for the sports topic, the chosen queries were as follows: {World Cup 2010, France cycling tour, Formula 1 racing cars, Famous football players, Roland-Garros tournament}. Queries were submitted to different search engines, and the first two pages containing the 20 results were archived for each query and each search engine.

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