The htmlButler project aims at enhancing the usability of visual wrapper technology while preserving versatility. htmlButler will allow, for an untrained user who has only the most basic web knowledge, to visually specify simple but useful wrappers and, for a more tech-savvy user, to visually or otherwise specify more complex wrappers. htmlButler was started 2005/2 and is based on visual wrappi...

We propose an extensible architecture which allows wrapper-learning systems to be easily constructed and tuned. In this architecture the bias of the wrapper-learning system is encoded as an ordered set of “builders”, each associated with some restricted extraction language L. To implement a new builder it is only necessary to implement a small set of core operations for L. Builders can also be ...

In the feature subset selection problem, a learning algorithm is faced with the problem of selecting a relevant subset of features upon which to focus its attention, while ignoring the rest. To achieve the best possible performance with a particular learning algorithm on a particular training set, a feature subset selection method should consider how the algorithm and the training set interact....

This paper concerns the extraction of semi-structured data from Web pages generated from multiple on-line services. This task is addressed by representing the schemas for semi-structured data and crafting generic wrappers based on the schemas. We introduce a hybrid representation method for schemas of semi-structured data, consisting of a concept hierarchy and a set of knowledge unit frames. A ...

Tying web services together to build large, distributed, collaborative applications has gathered noticeable momentum and a lot of research is being put in it. Along with composition of the web services, coordination is one key aspect that has been considered keenly. Many frameworks, languages and protocols have been proposed for web service composition and coordination. With the advancement in ...

In this paper, we present a wrapper-based acoustic group feature selection system for the INTERSPEECH 2015 Computational Paralinguistics Challenge (ComParE) 2015, Eating Condition (EC) Sub-challenge. The wrapper-based method has two components: the feature subset evaluation and the feature space search. The feature subset evaluation is performed using Support Vector Machine (SVM) classifiers. T...

metaMS is designed to perform the analysis of LC-MS and GC-MSbased metabolomics assays. For LC-MS data, its major function runLC() is a wrapper around the functions and classes of xcms and CAMERA and it is designed to process a series of data files producing a peak table with the intensity of each feature an mz,rt couple in each one of the samples. The functions and classes of xcms and CAMERA a...

Disjunctive logic programs are a powerful tool in knowledge representation and commonsense reasoning. The recent development of an efficient disjunctive logic programming engine, named DLV, allows to exploit disjunctive logic programs for solving complex problems. However, disjunctive logic programming systems are currently missing any interface supporting the integration between commonly used ...

The wealth of information contained in the world-wide web has created much interest in systems for integrating information from multiple sites. We describe a universal wrapper machine that can learn to extract information from the web given only a set of general rules describing the data domain. It cleanly separates out site-independent and site-specific knowledge from execution implementation....