directly access the data. Web wrappers, however, must automate Web browsing sessions to extract data from the target Web pages so other applications can process that data. Each Web site has its own set of links, layout templates, and syntax. You could, in a brute-force solution, program a wrapper for each browsing session. However, such wrappers are sensitive to Web site changes and become diff...

The amount of useful semi-structured data on the web continues to grow at a stunning pace. Often interesting web data are not in database systems but in HTML pages, XML pages, or text les. Data in these formats is not directly usable by standard SQL-like query processing engines that support sophisticated querying and reporting beyond keyword-based retrieval. Hence, the web users or application...

To simplify the task of obtaining information from the vast number of information sources that are available on the World Wide Web (WWW), we are building tools to build information mediators for extracting and integrating data from multiple Web sources. In a mediator based approach, wrappers are built around individual information sources, that provide translation between the mediator query lan...

Wrapper Induction for Information Extraction by Nicholas Kushmerick Chairperson of Supervisory Committee: Professor Daniel S. Weld Department of Computer Science and Engineering The Internet presents numerous sources of useful information|telephone directories, product catalogs, stock quotes, weather forecasts, etc. Recently, many systems have been built that automatically gather and manipulate...

Python is a popular language widely adopted by the scientific community due to its clear syntax and an extensive number of specialized packages. For image processing or computer vision development, two libraries are prominently used: NumPy/SciPy and OpenCV with a Python wrapper. In this paper, we present a comparative evaluation of both libraries, assessing their performance and their usability...

This work aims to use sentiment analysis techniques, data mining, text mining and natural language processing to indicate the polarity of texts using support vector machine. Weka software and a movie review database from Internet Movie Database IMDb were used. This work uses preprocessing filters and WRAPPER techniques and Support Vector Machine (SVM) for classification. It presents better resu...

Service-oriented e-science workflow has emerged as a paradigm for integrating heterogeneous distributed science computations. Life sciences also utilizes workflow management systems based on chemical information for accelerating scientific progress. We have developed an infrastructure of chemoinformatics Web services that make those approaches efficient. In this paper, we describe a Web service...

The amount of useful semi-structured data on the web continues to grow at a stunning pace. Often interesting web data are not in database systems but in HTML pages, XML pages, or text les. Data in these formats is not directly usable by standard SQL-like query processing engines that support sophisticated querying and reporting beyond keyword-based retrieval. Hence, the web users or application...