Tariq Samad (auth.)'s A Natural Language Interface for Computer-Aided Design PDF

By Tariq Samad (auth.)

ISBN-10: 146129407X

ISBN-13: 9781461294078

ISBN-10: 1461322812

ISBN-13: 9781461322818

The creation of laptop aided layout and the proliferation of desktop aided layout instruments were instrumental in furthering the state-of-the­ paintings in built-in circuitry. carrying on with this development, besides the fact that, calls for an emphasis on growing ordinary environments that facilitate the interplay among the fashion designer and the CAD software. the conclusion of this truth has caused investigations into the appropriateness for CAD of a few user-interface applied sciences. One form of interface that has hitherto no longer been thought of is the ordinary language interface. it really is our rivalry that typical language interfaces may perhaps remedy a few of the difficulties posed via the expanding quantity and class of CAD instruments. This thesis represents step one in a learn attempt directed in the direction of the eventual improvement of a average language interface for the area of computing device aided layout. The breadth and complexity of the CAD area renders the duty of constructing a usual language interface for the whole area past the scope of a unmarried doctoral thesis. consequently, we now have initally focussed on a sub-domain of CAD. particularly, we've constructed a average language interface, named Cleopatra, for circuit-simulation post-processing. In different phrases, with Cleopatra a circuit-designer can extract and manage, in English, values from the output of a circuit-simulator (currently SPICE) with out manually having to move during the output documents produced by means of the simulator.

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Before describing how constraints are represented in Cleopatra, let us examme why semantic-feature-based systems are inadequate in this respect. 1. Two Arguments Against Semantic Features We believe that constraints on grammaticality and meaningfulness are much more complex than generally realized, especially within the artificial intelligence community. ) of verbs. (These constraints are called Uselectional restrictions. ") In semantic grammars, this use is implicit; Conceptual Dependency parsers test the semantic features of prospective participants in ACT's (the CD equivalent of verbs); and most linguistic theories propose semantic features for lexical semantics.

However, this introduces a degradation of precision. Differences between competing parses can get diluted as the parse progresses. This can pose problems, especially with long sentences. In additive updating, on the other hand, even small differences are maintained . • Unlike additive updating, weighted-average updating is sensitive to the ordering of the updates. ys invoke factors in the same order. For example, consider the sentence: 38 What is the voltage at nl? We presume that this sentence has two interpretations: one in which at nl is predicated of the voltage, and the other in which it is predicated of the verb.

Phenomema such as ungrammaticality, ellipsis, and conjunctions all require taking a broader view of a parsing situation than a state in an ATN can provide. In fact, there is information encoded in the sequence of ATN states that have been instantiated, and this information is not available in the particular state in which some deviation from the grammar is recognized (see [11 D. This does not mean that handling such phenomena are impossible within the ATN framework-in fact, some limited success has been achieved towards this end [46, 76]; however, ATN's suffer from not providing some kind of a meta-rule capability, and some such capability has to be tacked on in order to provide ATN-based systems the necessary power.

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A Natural Language Interface for Computer-Aided Design by Tariq Samad (auth.)

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