An up-to-date classification of chemical nomenclature morphemes is presented as the basis for formalizing rules of shortening the grammar used in the Nomenclature Generator software-technological complex for translati...
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An up-to-date classification of chemical nomenclature morphemes is presented as the basis for formalizing rules of shortening the grammar used in the Nomenclature Generator software-technological complex for translating names of organic compounds into structural graphs.
A Brain-Computer interface (BC!) is a communication system that enables the generation of a control signal from brain signals such as sensorymotor rhythms and evoked potentials;therefore, it constitutes a novel commun...
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ISBN:
(纸本)9781424432950
A Brain-Computer interface (BC!) is a communication system that enables the generation of a control signal from brain signals such as sensorymotor rhythms and evoked potentials;therefore, it constitutes a novel communication option for people with severe motor disabilities (such as Amyotrophic Lateral Sclerosis patients). This paper presents the development of a P300-based BCI. This prototype uses a homemade six-channel electroencephalograph for the acquisition of the signals, and a visual stimulation matrix;since this matrix contains letters of the alphabet as well as images associated to them, it permits word-writing and the elaboration of messages with the images. To process the signals the software BCI2000 and MATLAB 7.0 were used. The latter was used to program three linear translation algorithms (Stepwise Linear Discriminant Analysis, Lineal Discriminant Analysis and Least Squares) to convert the brain signals into communication signals. These algorithms had a classification accuracy of 90.73 %, 95.75 % and 89.45 % respectively, when using raw data;and of 90.78%, 49.48 % and 53.9 %, when data was previously common-average filtered. The experimental setup was tested in ten healthy volunteers;5 of them got a 100% success, 1 a 90% success, 2 an around 70% success and 2 a 50% success, in the online free-spelling tests.
This paper describes a new technique for the direct translation of character n-grams for use in Cross-Language Information Retrieval systems. This solution avoids the need for word normalization during indexing or tra...
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ISBN:
(纸本)9783540733508
This paper describes a new technique for the direct translation of character n-grams for use in Cross-Language Information Retrieval systems. This solution avoids the need for word normalization during indexing or translation, and it can also deal with out-of-vocabulary words. This knowledge-light approach does not rely on language-specific processing, and it can be used with languages of very different natures even when linguistic information and resources are scarce or unavailable. Our proposal also tries to achieve a higher speed during the n-gram alignment process with respect to previous approaches.
This paper describes the technique for translation of character n-grams we developed for our participation in CLEF 2006. This solution avoids the need for word normalization during indexing or translation, and it can ...
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ISBN:
(纸本)9783540749981
This paper describes the technique for translation of character n-grams we developed for our participation in CLEF 2006. This solution avoids the need for word normalization during indexing or translation, and it can also deal with out-of- vocabulary words. Since it does not rely on language- specific processing, it can be applied to very different languages, even when linguistic information and resources are scarce or unavailable. Our proposal makes considerable use of freely available resources and also tries to achieve a higher speed during the n-gram alignment process with respect to other similar approaches.
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