An analysis of review content and reviewer variables that contribute to review helpfulness     

MSI Malik  Ayyaz Hussain 《Information processing & management》2018,54(1):88-104

Review helpfulness is attracting increasing attention of practitioners and academics. It helps in reducing risks and uncertainty faced by users in online shopping. This study examines uninvestigated variables by looking at not only the review characteristics but also important indicators of reviewers. Several significant review content and two reviewer variables are proposed and an effective review helpfulness prediction model is built using stochastic gradient boosting learning method. This study derived a mechanism to extract novel review content variables from review text. Six popular machine learning models and three real-life Amazon review data sets are used for analysis. Our results are robust to several product categories and along three Amazon review data sets. The results show that review content variables deliver the best performance as compared to the reviewer and state-of-the-art baseline as a standalone model. This study finds that reviewer helpfulness per day and syllables in review text strongly relates to review helpfulness. Moreover, the number of space, aux verb, drives words in review text and productivity score of a reviewer are also effective predictors of review helpfulness. The findings will help customers to write better reviews, help retailers to manage their websites intelligently and aid customers in their product purchasing decisions.  相似文献   

中国女排接发球进攻质量与特点研究   总被引：5，自引：2，他引：3  

祁淑云  孙敬  李学淞 《天津体育学院学报》2003,18(1):31-34

对中国女排在1999年世纪杯和2000年奥运会与世界列强26局的比赛录像进行有关数据统计，从中比较与对手的差距，并将有关数据与相应的得分情况进行回分析，找出中国女排在比赛中连续失分的原因及规律，旨在揭示其在抓机遇发展自身特长上的不足，以供新组建的中国女排参考。  相似文献   

学年体育教学计划季候性特点与周期划分的研究     

陈勇 《浙江体育科学》2003,25(6):39-40,64

采用实验研究的方法，对两年来按体育课学年教学计划季候性特点与周期划分实施教学的实验班与按普通计划完成相同内容实施教学的对照班进行比较分析。结果表明：实验班的人体素质和运动技术、技能明显好于对照班。这对明确科学划分学年体育教学计划的意义和各周期的任务提供了有力的证据。使制订学年体育教学计划向着更有时间性、季节性、气候性和针对性，更切合外界客观规律和环境条件，更符合学生的生理和心理特点，以便取得更好的教学效果方向发展奠定了理论与实践基础。  相似文献   

9——18岁学生最大吸氧量的纵向研究   总被引：3，自引：0，他引：3  

王步标  肖泽亮  王翔  曾凡弟  伍民  常灿如  胡文烨  汤长发 《体育学刊》1995,(2)

本文采用复盖式纵向研究法,对9—18岁男女学生的最大吸氧量进行连续4年的直接测定,分析研究了其自然发展规律及年龄、性别特征。  相似文献   

网络参考文献的可接受性、选择性和可获取性研究   总被引：9，自引：2，他引：9  

胡德华  孙振球  方平  刘双阳  周文琦  刘海霞 《情报学报》2006,25(2):179-183

因特网的出现使获取网络学术资源变得更加方便快捷,但在正式的学术交流中对它的引用仍然存在争议,并且在引用中也存在着一些问题。本文统计分析了情报学、情报工作期刊中含网络参考文献的论文占总论文的比例,网络参考文献占总参考文献的比例,网址域名的分布及其可获取性,进而评价了网络参考文献的可接受性、选择性和可获取性。  相似文献   

《清嘉录》著述年代考--兼论著者顾禄生年     

稻畑耕一郎 《新世纪图书馆》2006,(1):15-17

清代中期顾禄所著《清嘉录》，是记录当时江苏岁时习俗的重要书籍。论文作者通过参阅大量文献考证了《清嘉录》的著述年代及顾禄的生年。  相似文献   

生存分析法在学术期刊评价上的应用初探     

李 幸 曾 文 范 畅师兵范  望俊成 《中国科技资源导刊 (中国信息导报)》2018,(1):75-84

期刊评价中文献老化理论视角的研究相对薄弱。本文探究生存分析法在学术期刊评价上的应用,在理论上 克服了因领域差异导致的壁垒,并选取CSTPCD中30家中文物理学科期刊作为样本数据集进行实证研究。通过对论文 被引时序数据进行分析,研究物理学科文献老化规律,并选取样本期刊进行对比分析,以探究期刊评价的新思路。  相似文献   

张謇庚子年间东南意识略议     

刘学照 《华东师范大学学报(哲学社会科学版)》2007,39(2):20-25

庚子年(1900年)间,上海报刊时论凸显出一种从上海、东南和南方的视角立论的东南意识,表现出上海和东南绅商关心时局发展和国家命运的社会主体思想.张謇作为江苏和东南地区的上层绅商代表,他在庚子年向东南督抚的陈言献策中,也显露出与上海庚子报刊时论类同的东南意识.特别是他提出的"西北"与"东南"的"名、实"互存论,是一种深涵政治哲理的时局观,它为我们考察张謇的政治思想提供了一个新视角.  相似文献   

An analysis of the regional disparity in the average educational expenditure per senior secondary student and its relevant factors in China     

Baifu Shen 《Frontiers of Education in China》2006,1(2):270-285

The essay deals with regional disparities in the average educational expenditure of every ordinary senior secondary student, including budget funds for education, the proportion appropriated to the ordinary senior high school by the government, tuition fee per student and the proportion of tuition fees of the total educational expenditure. By analyzing the relevant educational and economic indicators, we find that the average educational expenditure and tuition of every student in the western area are lower than those in the eastern and the middle area while the proportion of funds allocated by the government is the highest. However, in the middle area, both of the government appropriation of education funds for every student and its proportion of the total educational expenditure are the lowest in China, but on the other hand the proportion of tuition fee of the total educational expenditure and the income of the rural residents are the highest. Therefore, the aim of this essay is to look at the reasons why there are such differences.  相似文献   

六堡茶传统工艺演变略考     

彭庆中 《广西职业技术学院学报》2019,(3):26-31,78

传统工艺对六堡茶的发展起到极大的推动作用。近一百年来,六堡茶的传统工艺发生了或大或小的变化。根据《食品安全地方标准六堡茶(传统工艺)》的规定,在界定六堡茶传统工艺的基础上,结合文献和老茶实物,推演六堡茶传统工艺大致的演变情况。  相似文献