Kristina Toutanova

chapter

CGWorld - Architecture and Features

Pavlin Dobrev, Kristina Toutanova

Lecture Notes in Computer Science > Conceptual Structures: Integration and Interfaces > Interfaces and Applications > 261-270

This article presents recent developments in CGWorld - a web based workbench for distributed development of a knowledge base of conceptual graphs, stored on a central server. The initial version of CGWorld met many of the needs that motivated its creation. It had excellent browsing, searching and editing features for a KB of CGs. However the support of large data and distributed development was not...

chapter

Optimizing Local Probability Models for Statistical Parsing

Kristina Toutanova, Mark Mitchell, Christopher D. Manning

Lecture Notes in Computer Science > Machine Learning: ECML 2003 > Contributed Papers > 409-420

This paper studies the properties and performance of models for estimating local probability distributions which are used as components of larger probabilistic systems — history-based generative parsing models. We report experimental results showing that memory-based learning outperforms many commonly used methods for this task (Witten-Bell, Jelinek-Mercer with fixed weights, decision trees, and log-linear...

chapter

Menu-based interfaces to conceptual graphs: The CGLex approach

Galia Angelova, Svetlana Damyanova, Kristina Toutanova, Kalina Bontcheva

Lecture Notes in Computer Science > Conceptual Structures: Fulfilling Peirce's Dream > 603-606

To summarise, in CGLex (i) the system controls the user input to ensure consistent syntax and can provide context-sensitive help; (ii) all encoded facts can be tracked by the NL comments associated with each CG. Therefore, the user can think in terms of encoded facts as well as conceptual structures, i.e., can create a “library” of facts. Such an approach also offers a language-based exploration of...

chapter

Using Conceptual Graphs to Solve a Resource Allocation Task

Svetlana Damianova, Kristina Toutanova

Lecture Notes in Computer Science > Conceptual Structures: Standards and Practices > SISYPHUS-I > 297-314

This paper presents a solution of the Sisyphus-I room allocation task encoding the problem specific data in conceptual graphs (CG). We use extensively type definitions and relation definitions to represent knowledge about the domain and demons to represent allocation rules and dynamically changes in the knowledge base of conceptual graphs. It is assumed that an external system, which performs inference...

article

Survey of data-selection methods in statistical machine translation

Sauleh Eetemadi, William Lewis, Kristina Toutanova, Hayder Radha

Machine Translation > 2015 > 29 > 3-4 > 189-223

Statistical machine translation has seen significant improvements in quality over the past several years. The single biggest factor in this improvement has been the accumulation of ever larger stores of data. We now find ourselves, however, the victims of our own success, in that it has become increasingly difficult to train on such large sets of data, due to limitations in memory, processing power,...

article

Stochastic HPSG Parse Disambiguation using the Redwoods Corpus

Kristina Toutanova, Christopher D. Manning, Dan Flickinger, Stephan Oepen

Research on Language and Computation > 2005 > 3 > 1 > 83-105

This article details our experiments on HPSG parse disambiguation, based on the Redwoods treebank. Using existing and novel stochastic models, we evaluate the usefulness of different information sources for disambiguation – lexical, syntactic, and semantic. We perform careful comparisons of generative and discriminative models using equivalent features and show the consistent advantage of discriminatively...

article

LinGO Redwoods

Stephan Oepen, Dan Flickinger, Kristina Toutanova, Christopher D. Manning

Research on Language and Computation > 2004 > 2 > 4 > 575-596

Reflecting an increased need for stochastic parse selection models over hand-built linguistic grammars and a lack of appropriately detailed training material, we present the Linguistic Grammars On-Line (LinGo) Redwoods initiative, a seed activity in the design and development of a new type of treebank. LinGo Redwoods aims at the development of a novel treebanking methodology, (i) rich in nature and...

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Search results for: Kristina Toutanova

CGWorld - Architecture and Features

Optimizing Local Probability Models for Statistical Parsing

Menu-based interfaces to conceptual graphs: The CGLex approach

Using Conceptual Graphs to Solve a Resource Allocation Task

Survey of data-selection methods in statistical machine translation

Stochastic HPSG Parse Disambiguation using the Redwoods Corpus

LinGO Redwoods

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INFONA - science communication portal

Search results for: Kristina Toutanova

CGWorld - Architecture and Features

Optimizing Local Probability Models for Statistical Parsing

Menu-based interfaces to conceptual graphs: The CGLex approach

Using Conceptual Graphs to Solve a Resource Allocation Task

Survey of data-selection methods in statistical machine translation

Stochastic HPSG Parse Disambiguation using the Redwoods Corpus

LinGO Redwoods

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