电子商务中基于深度学习的虚假交易识别研究     

刘畅  殷聪 《现代情报》2016,36(10):62

为了解决电子商务平台中存在的虚假交易问题,本文依据商品的销售记录以及商家的基本信息,提出了一种结合深度置信网络和多层感知器的虚假交易识别方法,通过识别出以通过刷单增加销量的商品来识别虚假交易。首先利用深度置信网络对交易特征进行学习,得到更高层次的抽象特征;然后利用多层感知器进行分类任务,从而识别出虚假交易。从淘宝中爬取商品的交易记录和评论数据进行实验验证,与其他机器学习模型的实验结果进行对比,其性能有明显的提升。  相似文献   

<Emphasis Type="Italic">Dis</Emphasis>closive Ethics and Information Technology: <Emphasis Type="Italic">Disclosing Facial Recognition Systems</Emphasis>     

Lucas?D.?IntronaEmail author 《Ethics and Information Technology》2005,7(2):75-86

This paper is an attempt to present disclosive ethics as a framework for computer and information ethics – in line with the suggestions by Brey, but also in quite a different manner. The potential of such an approach is demonstrated through a disclosive analysis of facial recognition systems. The paper argues that the politics of information technology is a particularly powerful politics since information technology is an opaque technology – i.e. relatively closed to scrutiny. It presents the design of technology as a process of closure in which design and use decisions become black-boxed and progressively enclosed in increasingly complex socio-technical networks. It further argues for a disclosive ethics that aims to disclose the nondisclosure of politics by claiming a place for ethics in every actual operation of power – as manifested in actual design and use decisions and practices. It also proposes that disclosive ethics would aim to trace and disclose the intentional and emerging enclosure of politics from the very minute technical detail through to social practices and complex social-technical networks. The paper then proceeds to do a disclosive analysis of facial recognition systems. This analysis discloses that seemingly trivial biases in recognition rates of FRSs can emerge as very significant political acts when these systems become used in practice. Paper prepared for the Technology and Ethics Workshop at Twente  相似文献   

论建国以来我党对商品经济和市场经济的认识历程   总被引：2，自引：0，他引：2  

高林远 《四川师范大学学报(社会科学版)》2011,38(3):5-9

我党对商品经济和市场经济的认识,一直是放在与社会主义的相互关系中来把握的。按照对其认识的进程划分,主要经历了三个阶段:即对立阶段、统一阶段和确认市场经济是社会主义经济体制的阶段。这一认识进程表明,我党是一个善于把马克思主义的基本原理与中国具体建设实际相结合、不断接受实践检验、不断总结实践经验的政党,是一个勇于理论创新、坚持与时俱进的政党。  相似文献   

Emotion recognition in fathers and mothers at high-risk for child physical abuse     

Asla N  de Paúl J  Pérez-Albéniz A 《Child abuse & neglect》2011,35(9):712-721

Objective

The present study was designed to determine whether parents at high risk for physical child abuse, in comparison with parents at low risk, show deficits in emotion recognition, as well as to examine the moderator effect of gender and stress on the relationship between risk for physical child abuse and emotion recognition.

Methods

Based on their scores on the Abuse Scale of the CAP Inventory (Milner, 1986), 64 parents at high risk (24 fathers and 40 mothers) and 80 parents at low risk (40 fathers and 40 mothers) for physical child abuse were selected. The Subtle Expression Training Tool/Micro Expression Training Tool ( [Ekman, 2004a] and [Ekman, 2004b]) and the Diagnostic Analysis of Nonverbal Accuracy II (Nowicki & Carton, 1993) were used to assess emotion recognition.

Results

As expected, parents at high risk, in contrast to parents at low risk, showed deficits in emotion recognition. However, differences between high- and low-risk participants were observed only for fathers, but not for mothers. Whereas fathers at high risk for physical child abuse made more errors than mothers at high risk, no differences between mothers at low risk and fathers at low risk were found. No interaction between stress, gender, and risk status was observed for errors in emotion recognition.

Conclusions and practice implications

The present findings, if confirmed with physical abusers, could be helpful to further our understanding of deficits in processing information of physically abusive parents and to develop treatment strategies specifically focused on emotion recognition. Moreover, if gender differences can be confirmed, the findings could be helpful to develop specific treatment programs for abusive fathers.  相似文献   

RPL for accreditation in higher education – As a process of mutual understanding or merely lifeworld colonisation?     

Fredrik Sandberg  Per Andersson 《Assessment & Evaluation in Higher Education》2011,36(7):767-780

This article focuses on a process of recognition of prior learning (RPL) in higher education. It is based on experiences from a project carried out in collaboration between the University of Lund, Linköping University and two trade unions in Sweden. The aim of the project was to find ways of recognising prior learning for accreditation of course credits at university level. In the project and its analysis, Habermas’ theory of communicative action was used as theoretical underpinning. During the project we carried out a thematic analysis based on interviews. The analysis suggested that the participants had a mystified view of higher education that RPL must be considered a learning process and that the participants’ prior learning can be characterised as practical wisdom. These themes guided the development of the project. In a retrospective analysis, language proficiency seemed to play a significant role for the outcome of the process. The conclusion suggests that a more fair and valid assessment of the participant’s prior learning could be accomplished by focusing on RPL as a process of mutual understanding. However, a critical appraisal of the process suggests that RPL for accreditation is problematic and could be seen as a colonisation of the lifeworld.  相似文献   

Performativity,well‐being,social class and citizenship in English schools     

Pamela Fisher 《Educational studies》2011,37(1):49-58

A range of initiatives to promote well‐being and empowerment have been introduced into English schools. These ostensibly support the citizenship curriculum that seeks to foster a more active and engaged populace. Whilst children are being encouraged to view their own well‐being as a personal project (and as a badge of successful citizenship), this process is being undermined by an informal curriculum of citizenship, embedded within the culture of performativity, that is promoting a climate of misrecognition within schools. This form of “symbolic violence” (that affects working‐class families disproportionately) is encroaching into the private sphere, traditionally a potential refuge providing opportunities for the development of forms of well‐being that were not dependent on institutional endorsement. It is suggested that some of the counter‐hegemonic values developed in the face of marginalisation might usefully inform issues of citizenship and well‐being in schools in ways that would encourage genuinely empowered forms of citizenship.  相似文献   

开展技能大赛 提高社会对高职教育认可度探讨     

曹庆旭  刘焰 《佳木斯教育学院学报》2011,(2):182-182

针对高等职业教育的社会认可度不高,本文分析了目前高职教育社会认可度现状及原因,而通过全国高职院校技能大赛的开展,大大提高了高职教育的社会认可度。  相似文献   

公平之辨及其特质再认识     

杨运强 《辽宁教育行政学院学报》2011,(6)

公平是人类社会追求的理想和价值取向,但公平概念内涵的丰富与日常使用上的“日用而不辩”,造成公平概念认识上的无序与混乱,实践层面也同样面临无从入手的局面。因此,有必要对公平概念进行进一步研究,明晰公平的真实面貌。通过对公平及其相近概念的逐层辨析,可以得出以下探讨性的结论：公平是一个内涵复杂的独立概念;公平是一个相对价值的操作性概念;公平是代价最低、效率最高的追求;公平以权利平等为基础,向往机会均等。  相似文献   

基于稀疏求解的改进PCA方法在SAR目标识别中的应用     

肖垚  刘畅 《中国科学院大学学报》2018,35(1):84-88

针对实际军事情况下车辆目标为非合作目标,提出改进的主成分分析方法（IPCA）。它首先利用稀疏求解方法得到与测试样本最相关的部分训练样本以及它们对测试样本的表示系数。然后结合主成分分析（PCA）得到最优投影矩阵,使投影后不同测试样本能更好地利用训练样本信息进行分类。利用美国运动和静止目标获取与识别数据库中3类目标进行识别实验,结果表明基于改进的PCA方法比传统的PCA方法能够得到更高的识别率,并对稀疏方位角训练样本有更好的鲁棒性。  相似文献   

我国传统体育文化的反思与重构     

刘转青  郭军  刘海军 《体育成人教育学刊》2011,27(5):11-13

在阐述我国民族传统体育文化主要特点的基础上,指出中华传统体育文化重构面临自身包容性差,表现形式落后,缺乏现代文明因素;民众文化自觉性不够,对传统体育文化认同度低,传承机制脆弱等困境。提出应当通过吸纳西方体育中先进文化因素,丰富民族传统体育的文化内涵,改进表现形式;增强民众对中华传统体育文化的认同,树立"文化主体意识";将传统体育引入学校教育;加强民族传统体育理论体系的建设以及将民族传统体育纳入全民健身体系等对策来进行传统体育文化的重构。  相似文献