Results 1 - 10 of 14,452

A Hierarchical Approach to Wrapper Induction

by Ion Muslea, Steve Minton, Craig Knoblock , 1999
"... With the tremendous amount of information that becomes available on the Web on a daily basis, the ability to quickly develop information agents has become a crucial problem. A vital component of any Web-based information agent is a set of wrappers that can extract the relevant data from semistructur ..."
Abstract - Cited by 187 (6 self) - Add to MetaCart
semistructured information sources. Our novel approach to wrapper induction is based on the idea of hierarchical information extraction, which turns the hard problem of extracting data from an arbitrarily complex document into a series of easier extraction tasks. We introduce an inductive algorithm, stalker

Hierarchical Approach for Texture Compression

by Anton Pereberin , 1999
"... We introduce a hierarchical approach for hardware-aided texture compression. The hierarchical representation is combined with a block-wise approach that is used in some existing texture compression techniques. Our method is an attempt to merge texture compression and mip-mapping. ..."
Abstract - Cited by 9 (0 self) - Add to MetaCart
We introduce a hierarchical approach for hardware-aided texture compression. The hierarchical representation is combined with a block-wise approach that is used in some existing texture compression techniques. Our method is an attempt to merge texture compression and mip-mapping.

Hierarchical Approaches to Automatic Differentiation

by Christian Bischof, Mohammad Haghighat - IN [3 , 1996
"... A mathematical function, specified by a computer program, can be differentiated efficiently through the exploitation of its program structure. The important properties of a program for the efficient generation of derivative code are the asymmetries between the number of inputs and outputs of program ..."
Abstract - Cited by 14 (0 self) - Add to MetaCart
codes. We suggest a hierarchical approach based on a partitioning of the computational or program graph as a means to deduce workable solutions to this hard problem. Each partition corresponds to a localized scope for derivative computation, and hierarchical partitions provide a mechanism for exploiting

Hierarchically Classifying Documents Using Very Few Words

by Daphne Koller, Mehran Sahami , 1997
"... The proliferation of topic hierarchies for text documents has resulted in a need for tools that automatically classify new documents within such hierarchies. Existing classification schemes which ignore the hierarchical structure and treat the topics as separate classes are often inadequate in text ..."
Abstract - Cited by 521 (8 self) - Add to MetaCart
classification where the there is a large number of classes and a huge number of relevant features needed to distinguish between them. We propose an approach that utilizes the hierarchical topic structure to decompose the classification task into a set of simpler problems, one at each node in the classification

Treemaps: a space-filling approach to the visualization of hierarchical information structures

by Brian Johnson, Ben Shneiderman - PROC. 2ND INTERNATIONAL VISUALIZATION CONFERENCE 1991. IEEE , 1991
"... This paper describes a novel method for the visualization of hierarchically structured information. The Tree-Map visualization technique makes 100 % use of the available display space, mapping the full hierarchy onto a rectangular region in a space-filling manner. This efficient use of space allows ..."
Abstract - Cited by 476 (26 self) - Add to MetaCart
This paper describes a novel method for the visualization of hierarchically structured information. The Tree-Map visualization technique makes 100 % use of the available display space, mapping the full hierarchy onto a rectangular region in a space-filling manner. This efficient use of space allows

A bayesian hierarchical model for learning natural scene categories

by Li Fei-fei - In CVPR , 2005
"... We propose a novel approach to learn and recognize natural scene categories. Unlike previous work [9, 17], it does not require experts to annotate the training set. We represent the image of a scene by a collection of local regions, denoted as codewords obtained by unsupervised learning. Each region ..."
Abstract - Cited by 948 (15 self) - Add to MetaCart
We propose a novel approach to learn and recognize natural scene categories. Unlike previous work [9, 17], it does not require experts to annotate the training set. We represent the image of a scene by a collection of local regions, denoted as codewords obtained by unsupervised learning. Each

A Hierarchical Approach to Interactive Motion Editing for Human-like Figures

by Jehee Lee, Sung Yong Shin , 1999
"... This paper presents a technique for adapting existing motion of a human-like character to have the desired features that are specified by a set of constraints. This problem can be typically formulated as a spacetime constraint problem. Our approach combines a hierarchical curve fitting technique wit ..."
Abstract - Cited by 228 (16 self) - Add to MetaCart
This paper presents a technique for adapting existing motion of a human-like character to have the desired features that are specified by a set of constraints. This problem can be typically formulated as a spacetime constraint problem. Our approach combines a hierarchical curve fitting technique

A comparison of document clustering techniques

by Michael Steinbach, George Karypis, Vipin Kumar - In KDD Workshop on Text Mining , 2000
"... This paper presents the results of an experimental study of some common document clustering techniques: agglomerative hierarchical clustering and K-means. (We used both a “standard” K-means algorithm and a “bisecting ” K-means algorithm.) Our results indicate that the bisecting K-means technique is ..."
Abstract - Cited by 613 (27 self) - Add to MetaCart
is better than the standard K-means approach and (somewhat surprisingly) as good or better than the hierarchical approaches that we tested.

The Game Of Hex: The Hierarchical Approach

by Vadim V. Anshelevich
"... The game of Hex is a beautiful and mind-challenging game with simple rules and a strategic complexity comparable to that of Chess and Go. Hex positions do not tend to decompose into sums of independent positions. Nevertheless, we demonstrate how to reduce evaluation of Hex positions to topologica ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
to topological analysis of a hierarchy of simpler positions, and we develop corresponding recursive calculus. We also discuss in detail an idea of modeling Hex positions with electrical resistor circuits. We explain how this approach is implemented in Hexy - the strongest known Hex-playing computer program

Hierarchical Approaches to Understanding Consciousness

by L. Andrew, Coward Ron Sun
"... There has been much discussion of what a scientific theory of consciousness would look like, and even whether such a theory is possible. Some common misunderstandings of the nature of theories (e.g., in the physical sciences) have confused the discussion of theories concerning consciousness. Theorie ..."
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is needed to achieve a desired degree of accuracy, is fundamental to an effective theory in any field. The form of such a theory of consciousness is sketched, and the limitations of some alternative approaches described.
Results 1 - 10 of 14,452