By James Bailey, Latifur Khan, Takashi Washio, Gill Dobbie, Joshua Zhexue Huang, Ruili Wang
This two-volume set, LNAI 9651 and 9652, constitutes the completely refereed complaints of the 20 th Pacific-Asia convention on Advances in wisdom Discovery and knowledge Mining, PAKDD 2016, held in Auckland, New Zealand, in April 2016.
The ninety one complete papers have been conscientiously reviewed and chosen from 307 submissions. they're equipped in topical sections named: type; computer studying; purposes; novel tools and algorithms; opinion mining and sentiment research; clustering; function extraction and trend mining; graph and community facts; spatiotemporal and picture facts; anomaly detection and clustering; novel versions and algorithms; and textual content mining and recommender systems.
Read Online or Download Advances in Knowledge Discovery and Data Mining: 20th Pacific-Asia Conference, PAKDD 2016, Auckland, New Zealand, April 19-22, 2016, Proceedings, Part I PDF
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Extra info for Advances in Knowledge Discovery and Data Mining: 20th Pacific-Asia Conference, PAKDD 2016, Auckland, New Zealand, April 19-22, 2016, Proceedings, Part I
E. F1 and G-mean. Table 4 shows the comparison between HSBagging-F1 and HSBaggingGmean. Both of them have better results on their own selected metrics. However, HSBagging-Gmean signiﬁcantly outperforms HSBagging-F1 on both AUC and G-mean while HSBagging-F1 is only slightly better than HSBagging-Gmean on F1. Therefore, overall speaking, HSBagging-Gmean performs better than HSBagging-F1. 8 1 (c) Fig. 2. Average performance of HSBagging, UnderBagging and SMOTEBagging-1 over diﬀerent sampling rate in terms of (a) AUC, (b) F1, and (c) G-mean.
The OOB set Bo is then constructed by the samples that are not selected into B. The sampling rate selection is only conducted in the ﬁrst k iterations in order to save computational cost. In these k iterations, undersampling and SMOTE are used to process B at the same time at sampling rate p in Line 6. The sampling rate p ∈ [0, 1] is set to each of the values in the set I, in order to ﬁnd a proper sampling rate for the current data set. For undersampling, it randomly selects nmin + (1 − p) (nmaj − nmin ) samples from the majority class, and for SMOTE, it synthesizes p(nmaj − nmin ) more samples from the minority class and adds them to the Hybrid Sampling with Bagging for Class Imbalance Learning 19 original minority class, where nmaj and nmin represents the number of samples in the majority class and minority class.
The dot product of two vectors w, x is denoted by w, x wT x. , N }. Given a logical statement A, IA is 1 if A is true and is 0 otherwise. A norm of vector x is denoted by x and the dual norm is sup w, x . deﬁned as x ∗ w ≤1 It is known that the dual norm for x for x d i=1 p norm for x 1 |xi | p d i=1 1/p where p > 1 is . |xi | is x ∞ x, x 2 q max |xi |. , Wn p q . The dual norm of a group norm W p,q is the group norm W r,s where p1 + 1r = 1 and 1q + 1s = 1. We further recall some literature from convex analysis.