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面向小学藏语文课程知识问答语料库的构建和设计
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作者 切羊卓玛 石海强 +1 位作者 更太加 魏建国 《青海科技》 2023年第4期164-174,共11页
随着人工智能的发展,智能问答系统逐渐成为研究的热点,得到了越来越多研究者的关注。藏文问答系统不同于中英文等主流语种的问答系统,没有大量的结构化数据以支撑问答系统丰富全面的知识库引擎。本研究通过着力于面向小学藏语文课本数... 随着人工智能的发展,智能问答系统逐渐成为研究的热点,得到了越来越多研究者的关注。藏文问答系统不同于中英文等主流语种的问答系统,没有大量的结构化数据以支撑问答系统丰富全面的知识库引擎。本研究通过着力于面向小学藏语文课本数据领域的问答数据资源,通过规则筛选、人工校正、问句意图及相似度标注,构建了一个高质量的藏文问答数据集。经自动评价和实验验证,该数据集的问句和答复句具有较好的知识关联度,采用三分制的人工评价结果显示98%的数据样本符合小学生认知和藏文文语法规则,且问答对句子流畅、问题与答案相关性较高。通过Bert融合提取词和不融合提取词进行了意图分类和tf-idf+Bert相似度计算,分类结果准确率分别在75%和76%,相似度准确率在76%,这也验证了所构建面向小学藏语文课程知识问答语料库的有效性。 展开更多
关键词 小学藏语文课程 智能问答 语义关联 问答语料库 意图分类
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A 3D Geometry Model of Vocal Tract Based on Smart Internet of Things
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作者 Ming Li kuntharrgyal khysru +3 位作者 Haiqiang Shi Qiang Fang Jinrong Hu Yun Chen 《Computer Systems Science & Engineering》 SCIE EI 2023年第7期783-798,共16页
The Internet of Things(IoT)plays an essential role in the current and future generations of information,network,and communication development and applications.This research focuses on vocal tract visualization and mod... The Internet of Things(IoT)plays an essential role in the current and future generations of information,network,and communication development and applications.This research focuses on vocal tract visualization and modeling,which are critical issues in realizing inner vocal tract animation.That is applied in many fields,such as speech training,speech therapy,speech analysis and other speech production-related applications.This work constructed a geometric model by observation of Magnetic Resonance Imaging data,providing a new method to annotate and construct 3D vocal tract organs.The proposed method has two advantages compared with previous methods.Firstly it has a uniform construction protocol for all speech organs.Secondly,this method can build correspondent feature points between different speech organs.There are less than three control parameters can be used to describe every speech organ accurately,for which the accumulated contribution rate is more than 88%.By means of the reconfiguration,the model error is less than 1.0 mm.Regarding to the data from Chinese Magnetic resonance imaging(MRI),this is the first work of 3D vocal tract model.It will promote the theoretical research and development of the intelligent Internet of Things facing speech generation-related issues. 展开更多
关键词 Virtual reality vocal tract visualization articulatory modeling IOT
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基于超声和声学的藏语康方言元音研究 被引量:1
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作者 索昂代占 更太加 魏建国 《青海科技》 2022年第6期94-100,共7页
随着科学技术的进步和先进仪器的出现,语音研究逐渐向借助高精尖仪器探索产生机制和声学特性的方向发展。超声成像技术作为一种实时观测发音生理机制的有效方法,为元音的可视化研究提供了新的可能。目前,面向藏语康方言的元音研究大多... 随着科学技术的进步和先进仪器的出现,语音研究逐渐向借助高精尖仪器探索产生机制和声学特性的方向发展。超声成像技术作为一种实时观测发音生理机制的有效方法,为元音的可视化研究提供了新的可能。目前,面向藏语康方言的元音研究大多还停留在依靠单一的生理参数描写或声学特征定义阶段。因此,文章以藏语康方言中五个元音为研究对象,采用同步分析超声舌位图像和声学信号的方法,系统地研究了康方言元音的发音生理表现和声学区别特征,并通过康方言元音格局阐述了元音舌位变化和语音性质之间的基本关系,明确了基于多模态生理语音数据实现元音生理语音验证的可行性,为之后藏语现代语音学的研究和应用提供了有力支撑。 展开更多
关键词 藏语康方言 元音 超声舌位图像 声学特征
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Research on Tibetan Speech Recognition Based on the Am-do Dialect
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作者 kuntharrgyal khysru Jianguo Wei Jianwu Dang 《Computers, Materials & Continua》 SCIE EI 2022年第12期4897-4907,共11页
In China,Tibetan is usually divided into three major dialects:the Am-do,Khams and Lhasa dialects.The Am-do dialect evolved from ancient Tibetan and is a local variant of modern Tibetan.Although this dialect has its ow... In China,Tibetan is usually divided into three major dialects:the Am-do,Khams and Lhasa dialects.The Am-do dialect evolved from ancient Tibetan and is a local variant of modern Tibetan.Although this dialect has its own specific historical and social conditions and development,there have been different degrees of communication with other ethnic groups,but all the abovementioned dialects developed from the same language:Tibetan.This paper uses the particularity of Tibetan suffixes in pronunciation and proposes a lexicon for the Am-do language,which optimizes the problems existing in previous research.Audio data of the Am-do dialect are expanded by data augmentation technology combining noise and reverberation,and the morphological characteristics and characteristics of the Tibetan language are further considered.According to the particularity of Tibetan grammar,grammatical features are used to optimize grammatical relationships and are combined with a language model,and the Am-do dialect is scored and rescored.Experimental results show that compared with the baseline,our proposed new lexicon and data augmentation technology yields a relative increase of approximately 3%in character error rates(CERs)and a relative increase of 3%-19%in the recognition rate of acoustic models and language models. 展开更多
关键词 Am-do dialect acoustic model language model rescoring
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