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More than twelve years have elapsed since the first public release of WEKA. In that time, the software has been rewritten entirely from scratch, evolved substantially and now accompanies a text on data mining [35]. These days, WEKA enjoys widespread acceptance in both academia and business, has an active community, and has been downloaded more than 1.4… (More)

- Ian H. Witten, Eibe Frank
- 1999

of the book Witten and Frank's textbook was one of two books that I used for a data mining class in the Fall of 2001. The book covers all major methods of data mining that produce a knowledge representation as output. Knowledge representation is hereby understood as a representation that can be studied, understood, and interpreted by human beings, at least… (More)

The widely known binary relevance method for multi-label classification, which considers each label as an independent binary problem, has often been overlooked in the literature due to the perceived inadequacy of not directly modelling label correlations. Most current methods invest considerable complexity to model interde-pendencies between labels. This… (More)

The two dominant s c hemes for rule-learning, C4.5 and RIPPER, both operate in two stages. First they induce an initial rule set and then they reene it using a rather complex optimization stage that discards (C4.5) or adjusts (RIPPER) individual rules to make them work better together. In contrast , this paper shows how good rule sets can be learned one… (More)

Keyphrases provide semantic metadata that summarize and characterize documents. Kea is an algorithm for automatically extracting keyphrases from text. We use a large test corpus to evaluate its effectiveness in terms of how many author-assigned keyphrases are correctly identified. The system is simple, robust, and publicly available. Kea identifies… (More)

Keyphrases are an important means of document summarization, clustering, and topic search. Only a small minority of documents have author-assigned keyphrases, and manually assigning keyphrases to existing documents is very laborious. Therefore it is highly desirable to automate the keyphrase extraction process. This paper shows that a simple procedure for… (More)

Tree induction methods and linear models are popular techniques for supervised learning tasks, both for the prediction of nominal classes and continuous numeric values. For predicting numeric quantities , there has been work on combining these two schemes into 'model trees', i.e. trees that contain linear regression functions at the leaves. In this paper,… (More)

Machine learning methods for classification problems commonly assume that the class values are unordered. However, in many practical applications the class values do exhibit a natural order—for example, when learning how to grade. The standard approach to ordinal classification converts the class value into a numeric quantity and applies a regression… (More)

- Xin Xu, Eibe Frank
- PAKDD
- 2004

In this paper we upgrade linear logistic regression and boosting to multi-instance data, where each example consists of a labeled bag of instances. This is done by connecting predictions for individual instances to a bag-level probability estimate by simple averaging and maximizing the likelihood at the bag level—in other words, by assuming that all… (More)