TAILIEUCHUNG - Báo cáo khoa học: "Probabilistic Integration of Partial Lexical Information for Noise Robust Haptic Voice Recognition"

This paper presents a probabilistic framework that combines multiple knowledge sources for Haptic Voice Recognition (HVR), a multimodal input method designed to provide efficient text entry on modern mobile devices. HVR extends the conventional voice input by allowing users to provide complementary partial lexical information via touch input to improve the efficiency and accuracy of voice recognition. | Probabilistic Integration of Partial Lexical Information for Noise Robust Haptic Voice Recognition Khe Chai Sim Department of Computer Science National University of Singapore 13 Computing Drive Singapore 117417 simkc@ Abstract This paper presents a probabilistic framework that combines multiple knowledge sources for Haptic Voice Recognition HVR a multimodal input method designed to provide efficient text entry on modern mobile devices. HVR extends the conventional voice input by allowing users to provide complementary partial lexical information via touch input to improve the efficiency and accuracy of voice recognition. This paper investigates the use of the initial letter of the words in the utterance as the partial lexical information. In addition to the acoustic and language models used in automatic speech recognition systems HVR uses the haptic and partial lexical models as additional knowledge sources to reduce the recognition search space and suppress confusions. Experimental results show that both the word error rate and runtime factor can be reduced by a factor of two using HVR. 1 Introduction Nowadays modern portable devices such as the smartphones and tablets are equipped with microphone and touchscreen display. With these devices becoming increasingly popular there is an urgent need for an efficient and reliable text entry method on these small devices. Currently text entry using an onscreen virtual keyboard is the most widely adopted input method on these modern mobile devices. Unfortunately typing with a small virtual keyboard can sometimes be cumbersome and frus-tratingly slow for many people. Instead of using 31 a virtual keyboard it is also possible to use handwriting gestures to input text. Handwriting input offers a more convenient input method for writing systems with complex orthography including many Asian languages such as Chinese Japanese and Korean. However handwriting input is not necessarily more efficient compared to .

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