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11.
马旭 《宁夏师范学院学报》2003,24(6):47-51
文本分类是指在给定的分类体系下，根据文本的内容自动判别文本类别的过程，本文对、NET文本分类检索中所涉及的关键技术贝叶斯网分类方法，进行了研究和探讨，并且提出了基于向量空间的．NET文本分类检索的结构，并给出了会估计方法和实验结果。 相似文献
12.
This letter proposes a categorization matrix to analyze the playing style of a computer game player for a shooting game genre. Our aim is to use human-centered modeling as a strategy for adaptive games based on entertainment measure to evaluate the playing experience. We utilized a self-organizing map （SOM） to cluster the player＇s style with the data obtained while playing the game. We further argued that style-based adaptation contributes to higher enjoyment, and this is reflected in our experiment using a supervised multilayered perceptron （MLP） network. 相似文献
13.
Categorized overviews of web search results are a promising way to support user exploration, understanding, and discovery. These search interfaces combine a metadata-based overview with the list of search results to enable a rich form of interaction. A study of 24 sophisticated users carrying out complex tasks suggests how searchers may adapt their search tactics when using categorized overviews. This mixed methods study evaluated categorized overviews of web search results organized into thematic, geographic, and government categories. Participants conducted four exploratory searches during a 2-hour session to generate ideas for newspaper articles about specified topics such as “human smuggling.” Results showed that subjects explored deeper while feeling more organized, and that the categorized overview helped subjects better assess their results, although no significant differences were detected in the quality of the article ideas. A qualitative analysis of searcher comments identified seven tactics that participants reported adopting when using categorized overviews. This paper concludes by proposing a set of guidelines for the design of exploratory search interfaces. An understanding of the impact of categorized overviews on search tactics will be useful to web search researchers, search interface designers, information architects and web developers. 相似文献
14.
选择贵阳市3 001名城市居民为低碳能源使用行为的研究对象,采取问卷调查和随机访谈的方法并通过对低碳能源使用行为与心理特征变量进行聚类分析,对人口统计特征中家庭异质性因素进行了微观探讨,结果表明,(1)城市居民低碳能源使用行为与其心理特征因素存在共存和反向关系;(2)按低碳能源使用行为与心理特征变量分类,将城市居民划分为中立协调论者和低碳主义者两类群体,整体上以低碳能源使用的人群居多;(3)两类不同群体在家庭异质性中性别、年龄、职业、家庭支配收入和家庭类型等因素上均存有显著差异。 相似文献
15.
ABSTRACTThis article is based on an extensive study of teaching-learning processes in special educational settings organised for children diagnosed with Attention Deficit Hyperactivity Disorder (ADHD). There is a general assumption that children’s learning will be supported through placement in a special class with few students and one or more teachers present. The issues explored concern what educational practices unfold in these settings, i.e. what are the children learning, and how do they participate in the activities? The empirical study is based on video-recorded classroom interaction in eight ADHD-classes during a period of seven years, in total about 200 h. The results show that the interactional format dominating is characterised by one teacher instructing one child at a time. These situations usually seem to follow the well-known Initiative-Response-Feedback (I-R-F) structure. The contributions from the children are generally minimal, and there is no indication that the student’s role in such dyads is more active. Thus, there is little evidence that children’s learning will improve and that they become more focussed and assume a more participatory role in the interactional formats offered in special classes. Also, it is not obvious how experiences of this kind will prepare children for a return to regular classroom or develop towards becoming active citizens. 相似文献
16.
李欣 《和田师范专科学校学报》2007,27(3):165-166
本文以Z.Dornyei的外语学习动机三层次说为依据,从考察教学效果和学习动机的关系出发,对学生学习英语口语的动机进行分析,探讨如何通过激发学生的学习动机,促进学生学习口语的积极性,从而有效提高学生的英语口语水平。 相似文献
17.
Although adolescents are severely and chronically physically abused, relatively little attention has been directed towards understanding this phenomenon. This study explored the family characteristics and the behavioral-emotional reactions of 77 adolescents who were physically maltreated. The youths were selected at a number of sites including a runaway shelter, a hospital-based child abuse team, and a protective service unit. Six different patterns of adolescent reaction to abuse were identified: acting-out, depression, generalized anxiety, extreme adolescent adjustment, emotional-thought disturbance, and helplessness-dependency. Abuse toward these youth had been ongoing for an average of nearly five years. As there were no differences in family characteristics and emotional-behavioral reactions between subjects who were abused only during adolescence (including single-incident abuse) and subjects for whom family violence was evident from childhood on, the utility of a developmentally specific system of abuse categorization is questioned. It is suggested that it is the pattern of parent and child interaction rather than the course of the maltreatment that is related to the emotional and behavioral dysfunction of the adolescent victim. 相似文献
18.
温锁林 《福建师范大学学报(哲学社会科学版)》2012,(4):62-69
语言中存在着多样化的临时范畴构拟现象,本文称之为临时范畴化现象。这些临时范畴是为了表达说话人对事体独特的认知或是出于某种交际目的而临时构建的,它为我们展示了当代语言中活生生的范畴构建过程,这种临时范畴化现象理应是范畴化研究中一项重要的内容,但在相关的研究中并没有引起足够的重视甚至被忽略。文章对盛行于当代各种报刊、网络等媒体中的"强加式临时范畴化"现象进行了专门研究,以认知语言学的范畴化理论为背景,在观察大量语言材料的基础上,描写与分析了这种范畴化的类型与认知特点,展示了这种特殊的范畴临时构建的认知心理与产生过程,并解释了促成强加式临时范畴与其专用格式("有一种X叫Y")形成稳定匹配背后的修辞因素。 相似文献
19.
《International Journal of Information Management》2014,34(2):272-284
Company movements and market changes often are headlines of the news, providing managers with important business intelligence (BI). While existing corporate analyses are often based on numerical financial figures, relatively little work has been done to reveal from textual news articles factors that represent BI. In this research, we developed BizPro, an intelligent system for extracting and categorizing BI factors from news articles. BizPro consists of novel text mining procedures and BI factor modeling and categorization. Expert guidance and human knowledge (with high inter-rater reliability) were used to inform system development and profiling of BI factors. We conducted a case study of using the system to profile BI factors of four major IT companies based on 6859 sentences extracted from 231 news articles published in major news sources. The results show that the chosen techniques used in BizPro – Naïve Bayes (NB) and Logistic Regression (LR) – significantly outperformed a benchmark technique. NB was found to outperform LR in terms of precision, recall, F-measure, and area under ROC curve. This research contributes to developing a new system for profiling company BI factors from news articles, to providing new empirical findings to enhance understanding in BI factor extraction and categorization, and to addressing an important yet under-explored concern of BI analysis. 相似文献
20.
Customers commonly share opinions and experiences about products via the internet by means of social media and networking sites. The generated textual data is often analysed by means of Sentiment Analysis (SA) as means to assess customer opinions on product features more efficiently than through surveys. To enable a more objective product target setting, the impact of product feature performance changes on customer satisfaction is essential. Kano et al. (1984) presented a survey-based model to classify product features based on their impact on customer satisfaction to aid designers in their product target setting. Approaches extending the Kano model rely on customer surveys as input data. In addition, existing studies classifying extracted product features from textual data (e.g. product reviews) rarely provide a clear separation in terms of Kano categories. Thus, the impact of identified product features on customer satisfaction remains unknown to product designers. This paper presents a methodology for autonomously classifying extracted aspects from textual data into Kano categories. For verification purposes, two examples using coffee machine and smartphone user reviews are presented. Results indicate that the proposed methodology efficiently provides product designers with insightful customer information through the proposed aspect categorization. 相似文献