arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1704.08088cs.CL
收藏

利用词嵌入丰富复杂网络检测轻度认知障碍

Enriching Complex Networks with Word Embeddings for Detecting Mild Cognitive Impairment from Speech Transcripts

University of São Paulo(圣保罗大学)

Leandro B. dos Santos, Edilson A. Corrêa, Osvaldo N. Oliveira, Diego R. Amancio, Letícia L. Mansur, Sandra M. Aluísio

摘要:

轻度认知障碍(MCI)是一种难以诊断的精神障碍。主要来自解析器的语言特征已被用于检测MCI,但这不适合大规模评估。MCI不流利产生不符合语法的讲话,需要手动或高精度自动校正的成绩单。在本文中,我们将成绩单建模为复杂网络,并使用词嵌入(CNE)来丰富它们,以更好地表示神经心理学评估中产生的短文本。网络测量与众所周知的分类器一起应用,以在二进制分类任务中自动识别转录本中的MCI。传统的方法使用袋的词(BoW)和三个数据集的语言特征的性能进行了比较:DementiaBank在英语中,灰姑娘和亚利桑那州电池在葡萄牙语。总体而言,CNE提供了更高的准确性比只使用复杂的网络,而支持向量机是优于其他分类器。CNE为DementiaBank和Cinderella提供了最高的准确性,但BoW对Arizona-Battery数据集更有效,可能是由于其简短的叙述。如果对Cinderella数据集进行手动修改,则使用语言特征的方法具有更高的准确性。总之,结果表明,嵌入丰富的复杂网络在大规模评估中检测MCI是有希望的

英文摘要:

Mild Cognitive Impairment (MCI) is a mental disorder difficult to diagnose. Linguistic features, mainly from parsers, have been used to detect MCI, but this is not suitable for large-scale assessments. MCI disfluencies produce non-grammatical speech that requires manual or high precision automatic correction of transcripts. In this paper, we modeled transcripts into complex networks and enriched them with word embedding (CNE) to better represent short texts produced in neuropsychological assessments. The network measurements were applied with well-known classifiers to automatically identify MCI in transcripts, in a binary classification task. A comparison was made with the performance of traditional approaches using Bag of Words (BoW) and linguistic features for three datasets: DementiaBank in English, and Cinderella and Arizona-Battery in Portuguese. Overall, CNE provided higher accuracy than using only complex networks, while Support Vector Machine was superior to other classifiers. CNE provided the highest accuracies for DementiaBank and Cinderella, but BoW was more efficient for the Arizona-Battery dataset probably owing to its short narratives. The approach using linguistic features yielded higher accuracy if the transcriptions of the Cinderella dataset were manually revised. Taken together, the results indicate that complex networks enriched with embedding is promising for detecting MCI in large-scale assessments

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑