通过数据挖掘技术和智能算法寻找图书馆读者的借阅喜好,提高图书馆的管理效率和服务水平。以西安工程大学图书馆读者借阅记录为数据来源,选择读者借阅图书类目和读者所属学院作为参考变量,进行聚类分析,各聚类群组具有相似的借阅模式和显著的借阅特征。利用聚类群组中读者的主要借阅图书类目,建立广义回归神经网络(GRNN)模型,模型诊断准确率为94%,因此,将GRNN模型应用到读者借阅行为分析中。据此指导图书采购、完善图书馆藏、优化个性化推荐服务,为建设智能化图书馆奠定基础。
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网络游戏的消费者行为分析.doc
2022-04-06 03:04:56 20KB 网络游戏
hadoop 平台用户行为分析挖掘
2022-04-06 02:49:17 233KB hadoop 大数据 big data
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ClickHouse在Bilibili用户行为分析的实践.pdf
2022-04-06 02:03:34 2.57MB 安全
行为分析java源码
2022-03-28 17:18:06 3KB 行为分析 java 源码
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用java开发的基于淘宝的 用户行为分析系统
2022-03-28 14:21:02 4.6MB 用户行为分
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Emanuel Derman was a quantitative analyst (Quant) at Goldman Sachs, one of the financial engineers whose mathematical models became crucial for Wall Street. The reliance investors put on such quantitative analysis was catastrophic for the economy, setting off the ongoing string of financial crises that began with the mortgage market in 2007 and continues through today. Here Derman looks at why people-- bankers in particular --still put so much faith in these models, and why it's a terrible mistake to do so.Though financial models imitate the style of physics and employ the language of mathematics, ultimately they deal with human beings. There is a fundamental difference between the aims and potential achievements of physics and those of finance. In physics, theories aim for a description of reality; in finance, at best, models can shoot only for a simplistic and very limited approximation to it. When we make a model involving human beings, we are trying to force the ugly stepsister's foot into Cinderella's pretty glass slipper. It doesn't fit without cutting off some of the essential parts. Physicists and economists have been too enthusiastic to acknowledge the limits of their equations in the sphere of human behavior--which of course is what economics is all about. Models.Behaving.Badly includes a personal account of Derman's childhood encounters with failed models--the oppressions of apartheid and the utopia of the kibbutz. He describes his experience as a physicist on Wall Street, the models quants generated, the benefits they brought and the problems, practical and ethical, they caused. Derman takes a close look at what a model is, and then highlights the differences between the successes of modeling in physics and its failures in economics. Describing the collapse of the subprime mortgage CDO market in 2007, Derman urges us to stop the naïve reliance on these models, and offers suggestions for mending them. This is a fascinating, lyrical, and very human look behind the curtain at the intersection between mathematics and human nature.
2022-03-25 20:38:44 1.48MB 金融模型 经济危机
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提供JAVA和Scala两种实现,里面有详细操作步骤和注释 美团真实业务完整源码实现:https://tech.meituan.com/2016/03/31/spark-in-meituan.html 美团的交互式用户行为分析系统,用于提供对海量的流量数据进行交互式分析的功能,系统的主要用户为公司内部的PM和运营人员。普通的BI类报表系统,只能够提供对聚合后的指标进行查询,比如PV、UV等相关指标。
2022-03-25 09:23:43 10.72MB 美团 大数据 spark 用户行为分析
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基于UEBA的用户上网异常行为分析的数据集
2022-03-23 11:31:13 13.67MB UEBA
电流模式逻辑(CML)分频器因其广泛的分频范围而广泛用于射频和毫米波收发器以及频率合成器中。 在本文中,首次提出了基于跨导二阶近似的互补金属氧化物半导体CML分压器的一般分析和优化方法。 揭示了宽带自激频率周围的非对称灵敏度曲线的机理,以及自激频率之上的固有截止频率的不对称曲线,并在此基础上给出了相应的设计流程。 遵循所提出的流程,借助于所提出的优化方法,获得了比所报道的技术更好的折衷范围和功率之间的权衡。
2022-03-16 22:35:39 1.07MB Current-mode logic (CML); cutoff
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