Description
The most frequently used words in English are highly ambiguous; for example, Webster's Ninth New Collegiate Dictionary lists 94 meanings for the word "run" as a verb alone. Yet people rarely notice this ambiguity. Solving this puzzle has commanded the efforts of cognitive scientists for many years. The solution most often identified is "context": we use the context of utterance to determine the proper meanings of words and sentences. The problem then becomes specifying the nature of context and how it interacts with the rest of an understanding system. The difficulty becomes especially apparent in the attempt to write a computer program to understand natural language. Lexical ambiguity resolution (LAR), then, is one of the central problems in natural language and computational semantics research.
A collection of the best research on LAR available, this volume offers eighteen original papers by leading scientists. Part I, Computer Models, describes nine attempts to discover the processes necessary for disambiguation by implementing programs to do the job. Part II, Empirical Studies, goes into the laboratory setting to examine the nature of the human disambiguation mechanism and the structure of ambiguity itself.
A primary goal of this volume is to propose a cognitive science perspective arising out of the conjunction of work and approaches from neuropsychology, psycholinguistics, and artificial intelligence--thereby encouraging a closer co
Chapter
3 Word Expert Parsing and Psycholinguistics
4 Conclusions and Further Research
Appendix: An Example Word Expert
Chapter 2. Lexical Ambiguity Resolution in a Deterministic Parser
3 The Role of Agreement in Handling Ambiguity
4 Possible Uses for Agreement in English
Chapter 3. Resolving Lexical Ambiguity Computationally with Spreading Activation and Polaroid Words
4 What Polaroid Words Can't Do
Chapter 4. Are Vague Words Ambiguous?
3 Frame Selection as Word Disambiguation
4 Frame Selection as Concept Refinement
5 Comparison to Other Work
Chapter 5. Disambiguation in a Lexically Based Sentence Understanding System
1 A Lexically Based Sentence Understanding System
2 Some Types of Ambiguity
3 How to Traverse an Ambiguity Choice Tree
4 The Syntactic Disambiguation Mechanism
5 Encyclopedic Disambiguation Mechanism
6 Solving Additional Deep Understanding Problems
Chapter 6. An Account of Coherence, Semantic Relations, Metonymy, and Lexical Ambiguity Resolution
2 Coherence, Semantic Relations, and Metonymy
3 Coherence and Lexical Ambiguity Resolution
Chapter 7. A Model of Lexical Access of Ambiguous Words
3 The Seidenberg et al. Model of Lexical Access
4 A Connectionist Model of Lexical Access
Chapter 8. Distributed Representations of Ambiguous Words and Their Resolution in a Connectionist Network
4 Successive Stable State
Chapter 9. Process Synchronization, Lexical Ambiguity Resolution, and Aphasia
2 HOPE Models Normal Sentence Processing
3 Viewing Ambiguity in Processing
4 An Interpretation of Neural Ambiguity—Neural Evidence of Multiple Representation and Multiple Effect
5 Representation of Ambiguity in HOPE
6 Aphasie Evidence and HOPE Representations
7 The HOPE Lexicon—A Distributed Representation of a Word
8 Linguistic Performance Assumptions Inherent in the HOPE System Design
9 The Internal Control of Disambiguation in HOPE
11 A Summary of the HOPE Architecture
12 The Role of Time in HOPE Processing
13 Syntactic Disambiguation over Time
14 Developing Hypothesized Patient Profiles—The Role of Disambiguation
PART II: EMPIRICAL STUDIES
Chapter 10. Implications of Lexical Ambiguity Resolution for Word Recognition and Comprehension
1 An Overview of Research in Lexical Ambiguity
2 Applications of Lexical Ambiguity
Chapter 11. Lexical Processing and Ambiguity Resolution: An Autonomous Process in an Interactive Box
2 Parameters of Lexical Processing
3 Accessing Ambiguous Words in the Lexicon: Ambiguity Resolution
4 On Backward Pnming: Why It Isn't
5 The Lexicon: An Interactive Box with an Autonomous Component Process
Chapter 12. Is Multiple Access an Artifact of Backward Priming?
3 Cross-Modal Lexical Priming
5 Some Experimental Studies
8 Coda: Modularity and Lexical Ambiguity
Chapter 13. Sentential Context and Lexical Access
1 Methodological Considerations
Chapter 14. The Verb Mutability Effect: Studies of the Combinatorial Semantics of Nouns and Verbs
Part I: Experiments on Where Change of Meaning Occurs
Part II: Experiments on What Kinds of Meaning Change Occur
Part III: General Discussion
Chapter 15. (Almost) Never Letting Go: Inference Retention during Text Understanding
Chapter 16. Neuropsychology of Lexical Ambiguity Resolution: The Contribution of Divided Visual Field Studies
1 The Divided Visual Field Methodology
2 Lexical Access of Ambiguous Word Meanings
3 Specific Considerations
Chapter 17. Tracking the Time Course of Meaning Activation
2 An Alternative Interpretation of the Lexical Ambiguity Results
3 Event-Related Potentials
Chapter 18. Cognitive Topology and Lexical Networks
1 Cognitive Topology versus Semantic Features
2 Two Levels of Prototype Structure
10 Some Metaphorical Senses
12 More Metaphorical Senses
13 Image-Schemas as Links between Perception and Reason
14 The Nature of Image-Schema Transformations