Lucja Iwanska

Learn More
The UNO natural language processing (NLP) system implements a Boolean algebra computational model o f natural language [Iwadska, 1992] [Iwanska, 1993] [Iwanska, 1994] [Iwanska, 1996b] and reflects our researc h hypothesis that natural language is a very expressive, yet computationally tractable knowledge representation and reasoning system with its own(More)
Discourse comprises those phenomena that usually do not arise when processing a single sentence . It appears to be the most difficult and probably the least understood aspect of automated message understanding. Five out of fifteen sites on a MUC-3 survey listed discourse as their main weakness and an area in which t o concentrate future research . Virtually(More)
The GE NLTooLsET aims at extracting and deriving useful information from text using a knowledge-based , domain-independent core of text processing tools, and customizing the existing programs to each new task . The program achieves this transportability by using a core knowledge base and lexicon that adapts easil y to new applications, along with a flexible(More)
Correct interpretation of natural language utterances and texts requires linguistic and nonlinguistic context. Text and dialogue processing are two application domains where the lack of good theories of context impedes significant progress in applying and developing new natural language processing (NLP) technologies. With today’s text processing technology,(More)
A formal, computational, semantically clean representation of natural language is presented. This representation captures the fact that logical inferences in natural language crucially depend on the semantic relation of entailment between sentential constituents such as determiner, noun, adjective, adverb, preposition, and verb phrases. The representation(More)
This paper reports on the GE NLTooLsET customization effort for MUC-3, and analyzes th e results of the TST2 run . Although our own tests had shown steady improvement between TST1 and TST2, our official scores on TST2 were lower than on TST1 . The analysis of this unexpected result explains some of the details of the i1'UC-3 test, and we propose ways of(More)
An informal reception will be held on Saturday, November 8. A general plenary session, in which the highlights of each symposium will be presented, will be held on Sunday, November 9. Symposia will be limited to between forty and sixty participants. Each participant will be expected to attend a single symposium. Working notes will be prepared and(More)