Aspects of the logical architecture, the formalization, and the implementation of head-driven phrase structure grammars

In this paper, we continue the theoretical and experimental analysis of two widely used combining rules, namely, the simple and weighted average of classifier outputs, that we started in previous works. We analyse and compare the conditions which affect the performance improvement achievable by weighted average over simple average, and over individual classifiers, under the assumption of unbias...

A large experiment on combining classifiers is reported and discussed. It includes, both, the combination of different classifiers on the same feature set and the combination of classifiers on different feature sets. Various fixed and trained combining rules are used. It is shown that there is no overall winning combining rule and that bad classifiers as well as bad feature sets may contain val...

The distinction between a theory’s kinematics and its dynamics, that is, between the space of physical states it posits and its law of evolution, is central to the conceptual framework of many physicists. A change to the kinematics of a theory, however, can be compensated by a change to its dynamics without empirical consequence, which strongly suggests that these features of the theory, consid...

We introduce a systematic, concurrent execution scheme for Constraint Handling Rules (CHR) based on a previously proposed sequential goal-based CHR semantics. We establish strong correspondence results to the abstract CHR semantics, thus guaranteeing that any answer in the concurrent, goal-based CHR semantics is reproducible in the abstract CHR semantics. Our work provides the foundation to obt...

This paper reports two experiments on the implicit learning of second language word stress rules and presents a methodological innovation. In both experiments L1 Cantonese L2 English participants practised pronouncing two-syllable Spanish words. Learning of a hidden stress regularity was measured by a judgment task. We assessed participants’ awareness of the stress rule by verbal reports, confi...

This article discusses the empirical assessments employed on two versions of a Sesotho tone labeling algorithm. This algorithm uses linguistically-defined Sesotho tonal rules to predict the tone labels on the syllables of Sesotho words. The two versions differed in the number of tonal rules that they employ as well the lexical categories that the tone rules apply to. Both versions were tested o...

Variations in the acoustic manifestations of the rounding and height contrasts in French vowels are investigated in different prosodic positions. Four speakers produced sentences containing the vowels /i, e, a, y, ø/ at the beginning of different prosodic constituents: Intonational Phrase, Accentual Phrase and Word. Acoustic cues for the rounding contrast (F2, F3, F3-F2) and for the vowel heigh...

This paper discusses ergative case assignment in Hindi and its interaction with aspectual verb complexes or complex predicate constructions. It is shown that ergative case is assigned by the last head in the aspectual verb complex and that ergative case on the subject of intransitive verbs denoting bodily-functions is associated with a counter-to-expectation meaning. It is then shown that aspec...