我之前在《分析与可视化ROC——plotROC、pROC》中介绍了两个包 plotROC 和 pROC,那是一年前的事情了,现在我在处理 ROC 曲线时使用的是什么呢?pROC 包,它的理论基础来源于下面这篇文章,并且有非常完备的分析方法、可视化方法。
今天给大家演示下R语言做支持向量机的例子,并且比较下在不进行调参的默认情况下,4种核函数的表现情况。分别是:线性核,多项式核,高斯径向基核,sigmoid核。
嗨!大家好,我是一棵树,这是我第一次在解螺旋发文,还是蛮激动的。下面就开始吧! 今天的主题是:ROC分析时一定要告诉R分析谁 用到的软件是:R语言 用到的R包是:pROC和ROCit
ROC曲线是评价模型的重要工具,曲线下面积AUC可能是大家最常见的模型评价指标之一。
可以通过pROC包实现的,使用其中roc.test()函数可实现两个ROC 的Delong检验。
前面无论是用全部变量还是筛选出的特征变量、无论如何十折交叉验证调参,获得的模型应用于测试集时虽然预测准确率能在90%以上,但与不基于任何信息的随机猜测相比,这个模型都是统计不显著的 (这一点可能意义也不大,样本不平衡时看模型整体准确性无意义)。一个原因应该是样本不平衡导致的。DLBCL组的样品数目约为FL组的3倍。不通过建模而只是盲猜结果为DLBCL即可获得75%的正确率。而FL组的预测准确率却很低。
并详细介绍了如何手动计算真阳性率/假阳性率,以及怎样计算多个,并把点连接成线,变成ROC曲线:ROC曲线纯手工绘制
这个R包计算AUC是基于中位数的,哪一组的中位数大就计算哪一组的AUC,在计算时千万要注意!
C-statistic是评价模型区分度的指标之一,在logistic模型中,C-statistic就是AUC,在生存资料中,C-statistic和AUC略有不同。
http://www.edugeek.net/forums/network-classroom-management/102744-vmware-numlock-num-lock-off-num-lock-num-lock-off.html
Introduction: In order to reach international markets through the Internet, supporting different cultures through our applications is essential for being successful. The .NET Framework 2.0 as well as 1.x comes with an integrated infrastructure for creatin
fifo_batch: This parameter controls the maximum number of requests per batch.It tunes the balance between per-request latency and aggregate throughput. When low latency is the primary concern, smaller is better (where a value of 1 yields first-come first-served behavior). Increasing fifo_batch generally improves throughput, at the cost of latency variation. The default is 16. front_merges: A request that enters the scheduler is possibly contiguous to a request that is already on the queue. Either it fits in the back of that request, or it fits at the front. Hence it’s called either a back merge candidate or a front merge candidate. Typically back merges are much more common than front merges. You can set this tunable to 0 if you know your workload will never generate front merges. Otherwise leave it at its default value 1. read_expire: In all 3 schedulers, there is some form of deadline to service each Read Request. The focus is read latencies. When a read request first enters the io scheduler, it is assigned a deadline that is the current time + the read_expire value in units of milliseconds. The default value is 500 ms. write_expire: Similar to Read_Expire, this applies only to the Write Requests. The default value is 5000 ms. writes_starved: Typically more attention is given to the Read requests over write requests. But this can’t go on forever. So after the expiry of this value, some of the pending write requests get the same priority as the Reads. Default value is 1. This tunable controls how many read batches can be processed before processing a single write batch. The higher this is set, the more preference is given to reads.
问题来了:如果希望自动补货触发的单据是采购申请PR,或者是另外一种PO类型比如ZNB, 该在哪里设置?
Modern processors are generally able to enter states in which the execution of a program is suspended and instructions belonging to it are not fetched from memory or executed. Those states are the idle states of the processor.
GitHub:https://github.com/kwwwvagaa/NetWinformControl
3.5 Kafka Connect Configs 下面是Kafka Connect 框架的配置: NAME DESCRIPTION TYPE DEFAULT VALID VALUES IMPORTANCE config.storage.topic The name of the Kafka topic where connector configurations are stored string high group.id A unique string that identifies the Co
先不说大家对RNA-seq数据的标准分析是否一定是对的,这样的简陋的分析其实是对数据的暴殄天物!
Published online 2017 Mar 16. doi: 10.1186/s13058-017-0825-6
本文讨论了软件架构中的六边形架构和依赖反转原则,以及如何应用这些原则来编写可测试且易于维护的软件系统。作者通过一个实际的例子来说明这些原则,并介绍了如何将它们应用于实际开发中,以解决软件的可维护性和可测试性问题。
001 (2021-02-4) Designing an Encoder for StyleGAN Image Manipulation
3.3 Producer Configs 下面是生产者的配置: NAME DESCRIPTION TYPE DEFAULT VALID VALUES IMPORTANCE key.serializer Serializer class for key that implements the org.apache.kafka.common.serialization.Serializerinterface. class high value.serializer Serializer class for
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我们在/home下建立一个名为svn的仓库(repository),以后所有代码都放在这个下面,创建成功后在svn下面多了几个文件夹。
2021年9月16日,根据埃默里大学 (EU) 进行的调查报告和研究诚信办公室 (ORI) 在其监督审查中进行的额外分析,ORI 发现王雅(音译,Wang Ya) , 医学博士, 博士,Winship 癌症研究所放射肿瘤学系实验放射肿瘤学部退休教授和主任,在美国公共卫生服务 (PHS) 基金支持的研究中从事不当行为,特别是在已经发表的JBC,Cell Death & Disease, Cancer Research 等6篇文章中从事学术不当行为。
剩余内容请关注本人公众号debugeeker, 链接为CISSP考试指南笔记:7.14 快速提示
This article documents my experience in migrating a small WPF application to the UNO framework for support on the UOS(统信).
NGINX is well known as a high performance load balancer, cache and web server, powering over 40% of the busiest websites in the world. Most of the default NGINX and Linux settings work well for most use cases, but it can be necessary to do some tuning to achieve optimal performance. This blog post will discuss some of the NGINX and Linux settings to consider when tuning a system. There are many settings available, but for this post we will cover the few settings recommended for most users to consider adjusting. The settings not covered in this post are ones that should only be considered by those with a deep understanding of NGINX and Linux, or after a recommendation by the NGINX support or professional services teams. NGINX professional services has worked with some of the world’s busiest websites to tune NGINX to get the maximum level of performance and are available to work with any customer who needs to get the most out of their system.
本篇是一个概率DP问题,也是DP专题的最后一篇,概率DP是DP中一个较为特殊的算法问题,混合了概率这个元素在里面,需要对概率有比较好的理解。
注意,这里我使用的是ped和map格式,如果ped文件中有表型数据(第六列),如果想指定表型数据,用--pheno,包括三列:家系,个体,表型值。
Microsoft does not adequately document the correct way to work with controls. It is left up to the programmer to somehow magically infer the correct way to do this. Unfortunately, all of the evidence suggests that UpdateData is the correct way to handle the problem of accessing control information while working inside a dialog. This is not correct. In fact, it is dangerous to use it. It is simply the wrong way to go about it.
这个文章做了 Differentially expression analysis of GSE199152 ,这个数据集 GSE199152 (3 RA-UIP, 20 IPF-UIP patients and 4 non-UIP controls) ,然后就可视化了 DESeq2, EdgeR and Limma packages were used to filter up-regulated DEGs
MetaGenyo是一个GWAS meta分析的在线网站,通过该网站,只需上传指定格式的文件,然后鼠标点击就可以轻松实现meta分析,网址如下
本地文件Giloteaux2016_Article_ReducedDiversityAndAlteredComp.pdf
Reminder: the median of the array [a1,a2,…,a2k+1] of odd number of elements is defined as follows: let [b1,b2,…,b2k+1] be the elements of the array in the sorted order. Then median of this array is equal to bk+1. There are 2n students, the i-th student ha
4.5.3 Flow control Since the RX ACL buffer can be full while a new payload arrives, flow control is required. The header field FLOW in the return TX packet may use STOP or GO in order to control the transmission of new data.
微软的解决办法usingSystem;usingSystem.Data;usingSyst运维
接下来,将/data/svn/conf目录下的svnserve.conf文件复制到/data/svn/test/conf/目录下。如下所示。
As any other defensive technique, physical security should be implemented by using a layered approach.
Three.js 是一款运行在浏览器中的 3D 引擎,你可以用它创建各种三维场景,包括了摄影机、光影、材质等各种对象。
Reminder: the median of the array [a1,a2,…,a2k+1] of odd number of elements is defined as follows: let [b1,b2,…,b2k+1] be the elements of the array in the sorted order. Then median of this array is equal to bk+1. 奇数个数的数组的中位数,是数组排序后的
‣ observations, variables, and datamatrices
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大家好,又见面了,我是你们的朋友全栈君。 RadControls for WinForms Q2 2008 SP1 Release Notes (v7.1.1.0) RadGridView Improvements Export to Excel as ExcelML: Added support of exporting of hidden columns and rows. There are three options to choose from to add hidden elements (
概述 UWP Community Toolkit 中有一个为图片或磁贴提供轮播效果的控件 - RotatorTile,本篇我们结合代码详细讲解 RotatorTile 的实现。 RotatorTi
JavaScript (class是ES6的新东西,看着不爽可以变,但主要还是里面的方法) 1. type 类型判断 class TypeFn { isString (o) { //是否字符串 return Object.prototype.toString.call(o).slice(8, -1) === 'String' } isNumber (o) { //是否数字 return Object.prototype.toString.call(o
Problem D Piotr's Ants Time Limit: 2 seconds "One thing is for certain: there is no stopping them; the ants will soon be here. And I, for one, welcome our new insect overlords." Kent Brockman Piotr likes playing with ants. He has n of them on a horiz
和主题有关的配置既有服务器的默认值,也有可选的per-topic的覆盖值。如果没有per-topic的配置值,就用服务器的默认值。覆盖值能在创建主题的时候用一个或多个--config选项来设置。以下示例用一个名为my-topic的主题,其中包含自定义最大消息大小和刷新率:
The steps of this generalized process are described here:
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