Machine learning techniques can be used to make lexicons adaptive. The main problems in adaptation are the addition of lexical material to an existing lexical database, and the recomputation of sublanguage-dependent lexical information when porting the lexicon to a new domain or application. Inductive lexicons combine available lexical information and corpus data to alleviate these tasks. In th...

This paper shows how DATR, a widely used formal language for lexical knowledge representation , can be used to deene an LTAG lexicon as an inheritance hierarchy with internal lexical rules. A bottom-up featural encoding is used for LTAG trees and this allows lexical rules to be implemented as co-variation constraints within feature structures. Such an approach eliminates the considerable redund...

We present an approach for smoothing treebank-PCFG lexicons by interpolating treebank lexical parameter estimates with estimates obtained from unannotated data via the Inside-outside algorithm. The PCFG has complex lexical categories, making relative-frequency estimates from a treebank very sparse. This kind of smoothing for complex lexical categories results in improved parsing performance, wi...

In this work we present the results of experimental work on the development of lexical class-based lexica by automatic means. Our purpose is to assess the use of linguistic lexical-class based information as a feature selection methodology for the use of classifiers in quick lexical development. The results show that the approach can help reduce the human effort required in the development of l...

This paper shows how DATR, a widely used formal language for lexical knowledge representation, can be used to define an LTAG lexicon as an inheritance hierarchy with internal lexical rules. A bottom-up featural encoding is used for LTAG trees and this allows lexical rules to be implemented as covariation constraints within feature structures. Such an approach eliminates the considerable redunda...

In this paper, we describe the system we submitted to the SemEval-2012 Lexical Simplification Task. Our system (mmSystem) combines word frequency with decompositional semantics criteria based on syntactic structure in order to rank candidate substitutes of lexical forms of arbitrary syntactic complexity (oneword, multi-word, etc.) in descending order of (cognitive) simplicity. We believe that t...

It is a much-debated issue whether one should assume separate lexical entries for participles used in passive and perfect constructions or whether there is just one lexical entry that is used in different ways depending on whether a passive or perfect auxiliary is present in the clause. In previous work I criticized approaches trying to analyze the passive with one lexical entry for making empi...

It is a much-debated issue whether one should assume separate lexical entries for participles used in passive and perfect constructions or whether there is just one lexical entry that is used in different ways depending on whether a passive or perfect auxiliary is present in the clause. In previous work I criticized approaches trying to analyze the passive with one lexical entry for making empi...

Communicative alignment refers to adaptation to one’s communication partner. Temporal aspects of such alignment have been little explored. This paper examines temporal aspects of lexical and syntactic alignment (i.e. tendencies to use the interlocutor’s lexical items and syntactic structures) in task-oriented discourse. In particular, we investigate whether lexical and syntactic alignment incre...