搜索结果: 1-15 共查到“Pearson”相关记录15条 . 查询时间(0.035 秒)
基于Pearson相关系数的货运车辆能耗模型研究
公路运输 能耗模型 Pearson相关系数 货运车辆 关键因子
2018/11/16
根据若干年货运车辆的调查数据，运用Pearson相关系数进行货运车辆单车百公里能耗的多元回归分析，通过相关程度确定了货运车辆百公里油耗的关键影响因子并量化了影响关系，借助二次回归结果构建单车百公里油耗模型，实现了货运车辆复杂因素下离散型油耗的高精度拟合.同时通过对北京市货运统计能耗对比和典型政策影响的案例分析，验证了对政策影响下各要素变量的响应，明确了车队能耗量化核算的准确度，并得到污染物减排政策...
Metric distances derived from cosine similarity and Pearson and Spearman correlations
Metric distances derived cosine similarity Pearson and Spearman correlations
2012/9/17
We investigate two classes of transformations of cosine similarity and Pearson and Spearman correlations into metric distances, utilising the simple tool of metric-preserving functions. The rst class...
A new family of solvable Pearson-Dirichlet random walks
Pearson-Rayleigh random walks random flights Dirichlet distribution gamma distribution Gauss hypergeometric function Bessel numbers Inverse Laplace transform
2011/9/6
A n-step Pearson-Gamma random walk in dstarts at the origin and consists of n independent steps with gamma distributed lengths and uniform orientations. The gamma distribution of each step length has ...
Neyman-Pearson classification, convexity and stochastic constraints
binary classifi cation Neyman-Pearson paradigm anomaly detection stochastic constraint convexity empirical risk minimization chance constrained optimization
2011/3/25
Motivated by problems of anomaly detection, this paper implements the Neyman-Pearson paradigm to deal with asymmetric errors in binary classification with a convex loss. Given a finite collection of c...
从偏态Pearson VII分布生成的新的多元偏态t分布
椭球等高分布 偏态Pearson VII分布 偏态t分布 密度生成函数
2009/11/19
一般而言, 偏态的椭球等高分布是一类分布族,
有相当一部分的分布都是积分形式, 且此类积分不易求出,
而偏态的正态、偏态的正态尺度混合、偏态的PVII型、偏态的PII型的分布却有着很好的结构,
偏态t分布属于偏态PVII型分布, 因此,
本文在偏态PVII型分布的基础上着重研究新的偏态t分布,
给出它的背景、定义、两种随机表示及其等价性.
Classification of probability densities on the basis of Pearson’s curves with application to coronal heating simulations
probability densities Pearson’s curves coronal heating simulations
2009/11/12
An important task for the problem of coronal heating is to produce reliable evaluation of the statistical properties of energy release and eruptive events such as micro-and nanoflares in the solar cor...
Analysis of Hydrologic Data Using Pearson Type III Distribution
Analysis of Hydrologic Data Pearson Type III Distribution
2009/10/29
Computation of reliable and precise long term estimates from the available
short term hydrologic records is often a challenging task for the design
engineers/hydrologists.
Peak flow magnitudes rela...
A Skewed Truncated Pearson Type VII Distributi
Gauss hypergeometric function skewed truncated Pearson type VII distribution truncated Pearson type VII distribution
2009/3/9
Skewed symmetric distributions have attracted a great deal of attention in the last few years. One of them, the skewed Pearson type VII distribution suffers from limited applicability because it is we...
A Skewed Truncated Pearson Type VII Distribution
Gauss hypergeometric function skewed truncated Pearson type VII distribution truncated Pearson type VII distribution
2009/3/9
Skewed symmetric distributions have attracted a great deal of attention in the last few years. One of them, the skewed Pearson type VII distribution suffers from limited applicability because it is we...
Pearson's wrong turning: against statistical measures of causal efficacy
causation causal efficacy statistics
2008/4/22
Standard statistical measures of strength of association, although pioneered by Pearson deliberately to be acausal, nowadays are routinely used to measure causal efficacy. But their acausal origins h...
Dr Sandie Suchet-Pearson,Department of Human Geography, Macquarie University(图）
doctor 博士 Professor 教授 environmental management 环境管理
2008/10/27
Dr Sandie Suchet-Pearson,Department of Human Geography, Macquarie University,Her research focuses on indigenous peoples’ rights and environmental management. Drawing on research looking at how indigen...
Pearson plc
Pearson plc 出版 publishing
2007/12/25
Pearson’s origins were in the construction business during the Industrial Revolution. Under the leadership of Weetman Pearson (later known as Lord Cowdray), Pearson became one of the world’s largest b...
Two-Body Relationship Between the Pearson-Takai-Halicioglu-Tiller and the Biswas-Hamann Potential Functions
the Pearson-Takai-Halicioglu-Tiller the Biswas-Hamann Potential Functions
2010/10/14
An approximate and a good parametric relationship between the Pearson-Takai-Halicioglu-Tiller (PTHT) and the Biswas-Hamann (BH) empirical potential energy functions is developed for the case of 2-body...
Review of "Mining Imperfect Data" by Ronald K. Pearson
Mining Imperfect Data Ronald K. Pearson
2010/2/26
Imperfect data are prevalent in health informatics and biomedical engineering. Therefore, data analysis and modelling tools in real world applications must be able to represent, recognise and process ...