Xu Cui

 

   



544 Stories by Xu Cui

The marshmallow test, temptation

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Sensitivity, specificity, ROC, AUC …

You can’t believe how much jargon there is in binary classification. Just remember the following diagram (from wiki). accuracy = ( TP + TN ) / (P+N), i.e. correctly classified divided by the total false discovery rate (FDR) = TP / (TP+FP), i.e.
5 1 min read

Unable to build a valid certificate chain for the signer.

How to get a cert in the first place: http://www.adobe.com/devnet/air/articles/signing_air_applications_print.html If you encounter this error when signing your AIR application, do the following: Download the Thawte Code Signing CA from www.thawte.co
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Terrific AIR applications

You can get all applications from Adobe Marketplace Beautiful Design Employee Directory Elegant design. This application drives me to learn AIR. Adobe Media Player Elegant design Time 100 Desktop Nice design. Rotating globe, rotating pictures in 3D T
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Balloon model of hemodynamics

Picture: The vascular bed is treated as an expandable venous compartment (a balloon). If there is a burst of flow, the volume will increase and then return to baseline. That’s where ‘balloon’ comes from. During steady state (i.e. wi
5 1 min read

Use htaccess to protect your web folder

Use htpasswd to create password file, or add password htpasswd -c .htpasswd fred htpasswd .htpasswd linda Then create a .htaccess file with the following text (not the path to the password file has to be full path) AuthUserFile /full/path/to/.htpassw
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文良安: 心灵的高度

心灵的高度是心灵达到一种超脱世俗,不为世俗所牵制的高超的思想境界。自来到西藏后,我逐渐对心灵的高度有了最新的感悟:心灵是一个人的根,人们的观念在心灵深处徘徊而升华;心灵是一个人的灵魂,人们的举动因为心
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“a file found in the source-path must have the same package structure”

When you use mxmlc to compile files, you might encounter this error. You need to add source-path option: mxmlc -source-path C:/p/y/src/ -file-specs MyClass.as -debug=true
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Weekly cycle of alivelearn.net traffic

Number of people visiting this blog fluctuates periodically with period 1 week. Basically on weekends few people visit.
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