Statistical Artifact (error)
In natural science and signal processing, an artifact is any error in the perception or representation of any information, introduced by the involved equipment or technique(s)
Computer science
In computer science, digital artifacts are anomalies introduced into digital signals as a result of digital processing.
Microscopy
In microscopy, artifacts are sometimes introduced during the processing of samples into slide form. See Artifact (microscopy)
Econometrics
In econometrics, which trades on computing relationships between related variables, an artifact is a spurious finding, such as one based on either a faulty choice of variables or an over extension of the computed relationship. Such an artifact may be called a statistical artifact. For instance, imagine a hypothetical finding that presidential approval rating is approximately equal to twice the percentage of citizens making more than $50,000 annually; if 60% of citizens make more than $50,000 annually, this would predict that the approval rating will be 120%. This prediction is a statistical artifact, since it is spurious to use the model when the percentage of citizens making over $50,000 is so high, and gross error to predict an approval rating greater than 100%.
Remote sensing
Medical imaging
In medical imaging, artifacts are misrepresentations of tissue structures seen in medical images produced by modalities such as Ultrasonography, X-ray Computed Tomography, and Magnetic Resonance Imaging. These artifacts may be caused by a variety of phenomena such as the underlying physics of the energy-tissue interaction (i.e. Ultrasound-air), data acquisition errors (such as patient motion), or a reconstruction algorithm's inability to represent the anatomy. Physicians typically learn to recognize some of these artifacts to avoid mistaking them for actual pathology.
Medical electrophysiological monitoring
In medical electrophysiological monitoring, artifacts are anomalous (interfering) signals that originate from some source other than the electrophysiological structure being studied. These artifact signals may stem from, but are not limited to: light sources; monitoring equipment issues; utility frequency (50 Hz and 60 Hz); or undesired electrophysiological signals such as EMG presenting on an EEG-, EP-, ECG-, or EOG- signal. Offending artifacts may obscure, distort, or completely misrepresent the true underlying electrophysiological signal sought.
Radar
In radar signal processing, some echoes can be related to fix targets (clutter), multipath returns, jamming, atmospheric effect (brightband or attenuation), anomalous propagation, and many other effects. All those echoes must be filtered in order to obtain the position, velocity and type of the real targets (aircraft, weather, etc...)
Statistical Artifact (error)的更多相关文章
- maven编译maven-surefire-plugin插件报错
1.编译错误信息: [INFO] ------------------------------------------------------------------------ [ERROR] Fa ...
- IntelliJ IDEA提示:Error during artifact deployment. See server log for details.
IntelliJ IDEA-2017.1.1 tomcat-8.5.13 问题:在IntelliJ IDEA中使用tomcat部署web app时,提示:Error during artifact ...
- maven创建web报错Cannot read lifecycle mapping metadata for artifact org.apache.maven.plugins:maven-compiler-plugin:maven-compiler-plugin:3.5.1:runtime Cause: error in opening zip file
Cannot read lifecycle mapping metadata for artifact org.apache.maven.plugins:maven-compiler-plugin:m ...
- [Java Web学习]Tomcat启动时报war exploded: Error during artifact deployment
报错:Artifact FirstWeb:war exploded: Error during artifact deployment. See server log for details. SEV ...
- idea -> Error during artifact deployment. See server log for details.
用idea导入eclipse工程,运行时,报Error during artifact deployment. See server log for details. 谷歌,最后发现是最新 tomc ...
- Error during artifact deployment. See server log for details.
Error during artifact deployment. See server log for details. 这两个地方要一样.不然.就报 Error during artifact d ...
- idea报错:[2016-08-31 09:20:10,763] Artifact xxx:war exploded: Error during artifact deployment.
[2016-08-31 09:20:10,763] Artifact newClassProject1:war exploded: Error during artifact deployment. ...
- IntelIJ IDEA配置Tomcat遇到问题Error during artifact deployment. See server log for details
IntelIJ IDEA在配置tomcat的时候会遇到Error during artifact deployment. See server log for details.这样的问题,我的系统是W ...
- IDEA 之 Error during artifact deployment. See server log for details
IDEA版本:2017.1.1 Tomcat版本:8.5,9.0 问题描述:安装最新版本的IDEA 2017.1.1版本,创建默认的 Web Application(3.1) 项目,配置 Applic ...
随机推荐
- 2018年长沙理工大学程序设计竞赛 J - 杯子
题意: 链接:https://www.nowcoder.com/acm/contest/96/J一天durong同学买了一个无限长的杯子,同时买了n个球,并且标号为1,2,3......n,duron ...
- js加入购物车抛物线动画
天猫将商品加入购物车会有一个抛物线动画,告诉用户操作成功以及购物车的位置,业务中需要用到类似的效果,记录一下实现过程备忘,先上demo 一开始没有想到用抛物线函数去做,也已经忘记还有这么个函数了,想着 ...
- Javascript版经典游戏之《扫雷》
翻出年初写的游戏贴上来,扫雷相信大家都玩过,先上图: 源码: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN ...
- 快速排序之Java实现
快速排序之Java实现 代码: package cn.com.zfc.lesson21.sort; /** * * @title QuickSort * @describe 快速排序 * @autho ...
- [BZOJ4129]Haruna’s Breakfast(树上带修改莫队)
BZOJ3585,BZOJ2120,BZOJ3757三合一. 对于树上路径问题,树链剖分难以处理的时候,就用树上带修改莫队. 这里的MEX问题,使用BZOJ3585的分块方法,平衡了时间复杂度. 剩下 ...
- BZOJ 3339: Rmq Problem 莫队算法
3339: Rmq Problem 题目连接: http://www.lydsy.com/JudgeOnline/problem.php?id=3339 Description n个数,m次询问l,r ...
- MikroTik RouterOS安装后初始化配置(PPPOE拨号上网)
1.修改登入密码 路由器默认登入账号为admin,密码为空,强烈建议修改登入密码保证安全: 2.修改接口名称 选择Interface,切换到Ethernet标签,找到状态是R(run)的两个端口. 给 ...
- centos ssh终端下高亮显示git分支名
#set git branch green=$'\e[1;32m' magenta=$'\e[1;35m' normal_colours=$'\e[m' function find_git_branc ...
- 打通Linux脉络系列:进程、线程和调度
http://edu.csdn.net/huiyiCourse/series_detail/60 http://edu.csdn.net/mycollege
- dtrace 相关资料
Here are some DTrace information sources: * [Oracle Wiki](https://wikis.oracle.com/display/DTrace/DT ...