By Leonardo Andrade Ribeiro, Theo Härder (auth.), Tadeusz Morzy, Theo Härder, Robert Wrembel (eds.)

ISBN-10: 3642330738

ISBN-13: 9783642330735

ISBN-10: 3642330746

ISBN-13: 9783642330742

This ebook constitutes the completely refereed lawsuits of the sixteenth East-European convention on Advances in Databases and knowledge structures (ADBIS 2012), held in Poznan, Poland, in September 2012. The 32 revised complete papers awarded have been rigorously chosen and reviewed from 122 submissions. The papers disguise a large spectrum of concerns in regards to the quarter of database and knowledge structures, together with database idea, database architectures, question languages, question processing and optimization, layout equipment, information integration, view choice, nearest-neighbor looking, analytical question processing, indexing and caching, concurrency keep watch over, allotted structures, facts mining, facts streams, ontology engineering, social networks, multi-agent platforms, enterprise method modeling, wisdom administration, and application-oriented issues like RFID, XML, and knowledge at the Web.

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Read Online or Download Advances in Databases and Information Systems: 16th East European Conference, ADBIS 2012, Poznań, Poland, September 18-21, 2012. Proceedings PDF

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Extra info for Advances in Databases and Information Systems: 16th East European Conference, ADBIS 2012, Poznań, Poland, September 18-21, 2012. Proceedings

Sample text

2 Eager Classifier with Emerging Patterns The solution for the retention replacement and the eager classifier based on emerging patterns is to discretise an attribute with distorted values and calculate probabilities of changing/retaining an original value for the transformed attributes. After the discretisation, we obtain a nominal attribute with distorted values according to the calculated probabilities of changing/retaining an original value, thus we are able to apply the approach for nominal attributes.

Haerder, and R. ): ADBIS 2012, LNCS 7503, pp. 29–42, 2012. c Springer-Verlag Berlin Heidelberg 2012 30 W. Andrzejewski and B. g. market basket data, web server logs or stock market data, show their sequential nature and are logically ordered. This was a motivation for authors of [1] to take sequences as facts of analysis. This new concept of OLAP, called sequential OLAP (or SOLAP), was initially used to analyze data of a public transportation system where a single passenger trip, made of one or more stages in form of begin station and end station pairs, is a fact of analysis.

One may also observe that for CSPA query processing using FOCUS index, the number of disk reads is constant. The second experiment tested influence of the mean database sequence length on the query performance. For this experiment we have used synthetic datasets, though we have tried to generate datasets having similar characteristics to the KDD CUP one. First, for each item we have estimated the probability that it is a first item in the sequence. Next, for each item pair, we have estimated conditional probabilities showing what is the probability of one item appearing if the second item appeared in the sequence previously, thereby forming a Markov chain.

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Advances in Databases and Information Systems: 16th East European Conference, ADBIS 2012, Poznań, Poland, September 18-21, 2012. Proceedings by Leonardo Andrade Ribeiro, Theo Härder (auth.), Tadeusz Morzy, Theo Härder, Robert Wrembel (eds.)


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