By A. Bifet

ISBN-10: 1607500906

ISBN-13: 9781607500902

This booklet is an important contribution to the topic of mining time-changing info streams and addresses the layout of studying algorithms for this objective. It introduces new contributions on numerous diverse points of the matter, settling on examine possibilities and lengthening the scope for functions. it is also an in-depth learn of move mining and a theoretical research of proposed equipment and algorithms. the 1st part is worried with using an adaptive sliding window set of rules (ADWIN). considering the fact that this has rigorous functionality promises, utilizing it instead of counters or accumulators, it bargains the opportunity of extending such promises to studying and mining algorithms no longer before everything designed for drifting facts. checking out with numerous tools, together with Na??ve Bayes, clustering, selection bushes and ensemble equipment, is mentioned to boot. the second one a part of the booklet describes a proper learn of hooked up acyclic graphs, or timber, from the perspective of closure-based mining, providing effective algorithms for subtree trying out and for mining ordered and unordered widespread closed timber. finally, a normal method to spot closed styles in a knowledge movement is printed. this can be utilized to strengthen an incremental procedure, a sliding-window established technique, and a mode that mines closed bushes adaptively from info streams. those are used to introduce type equipment for tree facts streams.IOS Press is a global technology, technical and scientific writer of high quality books for teachers, scientists, and execs in all fields. the various parts we put up in: -Biomedicine -Oncology -Artificial intelligence -Databases and data platforms -Maritime engineering -Nanotechnology -Geoengineering -All elements of physics -E-governance -E-commerce -The wisdom economic climate -Urban stories -Arms keep an eye on -Understanding and responding to terrorism -Medical informatics -Computer Sciences

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Extra info for Adaptive Stream Mining: Pattern Learning and Mining from Evolving Data Streams

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Rooted Unordered Trees – uFreqt [NK03]: Nijssen et al. extended FREQT to the unordered case. Their method solves in the worst case, a maximum bipartite matching problem when counting tree supports. – uNot [AAUN03]: Asai et al. presented uNot in order to extend FREQT. It uses an occurrence list based approach wich is similar to Zaki’s TreeMiner. CHAPTER 2. PRELIMINARIES 28 – HybridTreeMiner [CYM04]: Chi et al. proposed HybridTreeMiner, a method that generates candidates using both joins and extensions.

T − 1} 2 do train SVM on examples z(t−h,1), . . , z(t,m) 3 Compute ξα-estimate on examples z(t−h,1), . . , z(t,m) 4 return Window size which minimizes ξα-estimate. 2. The system called OLIN (On Line Information Network) gets a continuous stream of non-stationary data and builds a network based on a sliding window of the latest examples. The system dynamically adapts the size of the training window and the frequency of model re-construction to the current rate of concept drift OLIN uses the statistical significance of the difference between the training and the validation accuracy of the current model as an indicator of concept stability.

So the equations are simplified to: Kt = Pt−1/(Pt−1 + R) Xt = Xt−1 + Kt(zt − Xt−1) Pt = Pt(1 − Kt) + Q. Note the similarity between this Kalman filter and an EWMA estimator, taking α = Kt. This Kalman filter can be considered as an adaptive EWMA estimator where α = f(Q, R) is calculated optimally when Q and R are known. The performance of the Kalman filter depends on the accuracy of the a-priori assumptions: • linearity of the difference stochastic equation • estimation of covariances Q and R, assumed to be fixed, known, and follow normal distributions with zero mean.

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Adaptive Stream Mining: Pattern Learning and Mining from Evolving Data Streams by A. Bifet

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