Warren Greiff - Academia.edu (original) (raw)

Papers by Warren Greiff

Research paper thumbnail of Another Sys Called Qanda

this paper is structured as follows: first we describe the development tools just mentioned. Then... more this paper is structured as follows: first we describe the development tools just mentioned. Then we discuss our work on candidate ranking and provide a number of relevant results. Finally we talk about our end-to-end experiments and make some concluding remarks

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Research paper thumbnail of A probabilistic Rasch analysis of question answering evaluations

Proceedings of HLT- …, 2004

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Research paper thumbnail of Reading comprehension tests for computer-based understanding evaluation

Natural Language Engineering, 2006

Reading comprehension (RC) tests involve reading a short passage of text and answering a series o... more Reading comprehension (RC) tests involve reading a short passage of text and answering a series of questions pertaining to that text. We present a methodology for evaluation of the application of modern natural language technologies to the task of responding to RC tests. Our work is based on ABCs (Abduction Based Comprehension system), an automated system for taking tests requiring short answer phrases as responses. A central goal of ABCs is to serve as a testbed for understanding the role that various linguistic components play in responding to reading comprehension questions. The heart of ABCs is an abductive inference engine that provides three key capabilities: (1) first-order logical representation of relations between entities and events in the text and rules to perform inference over such relations, (2) graceful degradation due to the inclusion of abduction in the reasoning engine, which avoids the brittleness that can be problematic in knowledge representation and reasoning ...

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Research paper thumbnail of Soft Computing in Information Retrieval: Techniques and Applications

Information Processing & Management, 2003

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Research paper thumbnail of Another sys called Qanda

Voorhees and Harman [21], Nov 13, 2000

1 In keeping with our marine theme, we considered renaming our system Flounder due to its poor pe... more 1 In keeping with our marine theme, we considered renaming our system Flounder due to its poor performance this year. A trivial bug in the answer candidate ranking system caused candidates to be ranked essentially at random. Perhaps this run should be considered a “chance” baseline.

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Research paper thumbnail of MITRE's Qanda at TREC-11

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Research paper thumbnail of Fine-grained hidden markov modeling for broadcast-news story segmentation

Proceedings of the First International Conference on Human Language Technology Research, Mar 18, 2001

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Research paper thumbnail of Fine-Grained Hidden Markov Modeling for BroadcastNews

ABSTRACT We present the design and development of a Hidden Markov Model for the division of news ... more ABSTRACT We present the design and development of a Hidden Markov Model for the division of news broadcasts into story segments. Model topology, and the textual features used, are discussed, together with the non-parametric estimation techniques that were employed ...

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Research paper thumbnail of Personalized broadcast news navigator

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Research paper thumbnail of System and method for audio hot spotting

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Research paper thumbnail of Audio Hot Spotting and Retrieval Using Multiple Features

This paper reports our on-going efforts to exploit multiple features derived from an audio stream... more This paper reports our on-going efforts to exploit multiple features derived from an audio stream using source material such as broadcast news, teleconferences, and meetings. These features are derived from algorithms including automatic speech recognition, automatic speech indexing, speaker identification, prosodic and audio feature extraction. We describe our research prototype - the Audio Hot Spotting System - that allows users

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Research paper thumbnail of The MITRE Logical Form Generation System

In this paper, we describe MITRE's contribution to the logical form generation track of Sense... more In this paper, we describe MITRE's contribution to the logical form generation track of Senseval-3. We begin with a description of the context of MITRE's work, followed by a description of the MITRE sys- tem and its results. We conclude with a commentary on the form and structure of this evaluation track.

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Research paper thumbnail of Automatic Detection, Indexing, and Retrieval of Multiple Attributes from Cross-Lingual Multimedia Data

Advances in Video, Audio, and Imagery Analysis for Search, Data Mining, Surveillance, and Authoring, 2012

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Research paper thumbnail of Audio hot spotting and retrieval using multiple features

Proceedings of the Workshop on Interdisciplinary Approaches to Speech Indexing and Retrieval at HLT-NAACL 2004 - SpeechIR '04, 2004

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Research paper thumbnail of Computationally tractable probabilistic modeling of Boolean operators

ACM SIGIR Forum, 1997

The inference network model of information retrieval allows for a probabilistic interpretation of... more The inference network model of information retrieval allows for a probabilistic interpretation of Boolean query operators. Prior work has shown, however, that these operators do not perform as well as the pnorrn operators developed in the context of the vector space model. The design of alternativeoperators in the inference network framework must contend with the issue of computational tractability. We define a flexible class of link matrices that are natural candidates for the implementation of Boolean operators and art 0(n2) algorithm for the computation of ...

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Research paper thumbnail of Direct maximization of average precision by hill-climbing, with a comparison to a maximum entropy approach

Proceedings of HLT-NAACL 2004: Short Papers on XX - HLT-NAACL '04, 2004

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Research paper thumbnail of The role of variance in term weighting for probabilistic information retrieval

Proceedings of the eleventh international conference on Information and knowledge management - CIKM '02, 2002

In probabilistic approaches to information retrieval, the occurrence of a query term in a documen... more In probabilistic approaches to information retrieval, the occurrence of a query term in a document contributes to the probability that the document will be judged relevant. It is typically assumed that the weight assigned to a query term should be based on the expected value of that contribution. In this paper we show that the degree to which observable document

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Research paper thumbnail of Fine-grained hidden markov modeling for broadcast-news story segmentation

Proceedings of the first international conference on Human language technology research - HLT '01, 2001

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Research paper thumbnail of Personalcasting: Tailored Broadcast News

User Modeling and User-Adapted Interaction, 2000

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Research paper thumbnail of An application of document filtering in an operational system

Information Processing & Management, 2010

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Research paper thumbnail of Another Sys Called Qanda

this paper is structured as follows: first we describe the development tools just mentioned. Then... more this paper is structured as follows: first we describe the development tools just mentioned. Then we discuss our work on candidate ranking and provide a number of relevant results. Finally we talk about our end-to-end experiments and make some concluding remarks

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Research paper thumbnail of A probabilistic Rasch analysis of question answering evaluations

Proceedings of HLT- …, 2004

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Research paper thumbnail of Reading comprehension tests for computer-based understanding evaluation

Natural Language Engineering, 2006

Reading comprehension (RC) tests involve reading a short passage of text and answering a series o... more Reading comprehension (RC) tests involve reading a short passage of text and answering a series of questions pertaining to that text. We present a methodology for evaluation of the application of modern natural language technologies to the task of responding to RC tests. Our work is based on ABCs (Abduction Based Comprehension system), an automated system for taking tests requiring short answer phrases as responses. A central goal of ABCs is to serve as a testbed for understanding the role that various linguistic components play in responding to reading comprehension questions. The heart of ABCs is an abductive inference engine that provides three key capabilities: (1) first-order logical representation of relations between entities and events in the text and rules to perform inference over such relations, (2) graceful degradation due to the inclusion of abduction in the reasoning engine, which avoids the brittleness that can be problematic in knowledge representation and reasoning ...

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Research paper thumbnail of Soft Computing in Information Retrieval: Techniques and Applications

Information Processing & Management, 2003

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Another sys called Qanda

Voorhees and Harman [21], Nov 13, 2000

1 In keeping with our marine theme, we considered renaming our system Flounder due to its poor pe... more 1 In keeping with our marine theme, we considered renaming our system Flounder due to its poor performance this year. A trivial bug in the answer candidate ranking system caused candidates to be ranked essentially at random. Perhaps this run should be considered a “chance” baseline.

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Research paper thumbnail of MITRE's Qanda at TREC-11

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Fine-grained hidden markov modeling for broadcast-news story segmentation

Proceedings of the First International Conference on Human Language Technology Research, Mar 18, 2001

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Fine-Grained Hidden Markov Modeling for BroadcastNews

ABSTRACT We present the design and development of a Hidden Markov Model for the division of news ... more ABSTRACT We present the design and development of a Hidden Markov Model for the division of news broadcasts into story segments. Model topology, and the textual features used, are discussed, together with the non-parametric estimation techniques that were employed ...

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Research paper thumbnail of Personalized broadcast news navigator

Bookmarks Related papers MentionsView impact

Research paper thumbnail of System and method for audio hot spotting

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Audio Hot Spotting and Retrieval Using Multiple Features

This paper reports our on-going efforts to exploit multiple features derived from an audio stream... more This paper reports our on-going efforts to exploit multiple features derived from an audio stream using source material such as broadcast news, teleconferences, and meetings. These features are derived from algorithms including automatic speech recognition, automatic speech indexing, speaker identification, prosodic and audio feature extraction. We describe our research prototype - the Audio Hot Spotting System - that allows users

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The MITRE Logical Form Generation System

In this paper, we describe MITRE's contribution to the logical form generation track of Sense... more In this paper, we describe MITRE's contribution to the logical form generation track of Senseval-3. We begin with a description of the context of MITRE's work, followed by a description of the MITRE sys- tem and its results. We conclude with a commentary on the form and structure of this evaluation track.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Automatic Detection, Indexing, and Retrieval of Multiple Attributes from Cross-Lingual Multimedia Data

Advances in Video, Audio, and Imagery Analysis for Search, Data Mining, Surveillance, and Authoring, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Audio hot spotting and retrieval using multiple features

Proceedings of the Workshop on Interdisciplinary Approaches to Speech Indexing and Retrieval at HLT-NAACL 2004 - SpeechIR '04, 2004

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Computationally tractable probabilistic modeling of Boolean operators

ACM SIGIR Forum, 1997

The inference network model of information retrieval allows for a probabilistic interpretation of... more The inference network model of information retrieval allows for a probabilistic interpretation of Boolean query operators. Prior work has shown, however, that these operators do not perform as well as the pnorrn operators developed in the context of the vector space model. The design of alternativeoperators in the inference network framework must contend with the issue of computational tractability. We define a flexible class of link matrices that are natural candidates for the implementation of Boolean operators and art 0(n2) algorithm for the computation of ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Direct maximization of average precision by hill-climbing, with a comparison to a maximum entropy approach

Proceedings of HLT-NAACL 2004: Short Papers on XX - HLT-NAACL '04, 2004

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The role of variance in term weighting for probabilistic information retrieval

Proceedings of the eleventh international conference on Information and knowledge management - CIKM '02, 2002

In probabilistic approaches to information retrieval, the occurrence of a query term in a documen... more In probabilistic approaches to information retrieval, the occurrence of a query term in a document contributes to the probability that the document will be judged relevant. It is typically assumed that the weight assigned to a query term should be based on the expected value of that contribution. In this paper we show that the degree to which observable document

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Fine-grained hidden markov modeling for broadcast-news story segmentation

Proceedings of the first international conference on Human language technology research - HLT '01, 2001

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Personalcasting: Tailored Broadcast News

User Modeling and User-Adapted Interaction, 2000

Bookmarks Related papers MentionsView impact

Research paper thumbnail of An application of document filtering in an operational system

Information Processing & Management, 2010

Bookmarks Related papers MentionsView impact