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How do I determine k when using k-means clustering?

...nder Selb in Pattern Analysis and Applications vol. 2, p. 59-72, 1999. Finally, you can start with one cluster, then keep splitting clusters until the points assigned to each cluster have a Gaussian distribution. In "Learning the k in k-means" (NIPS 2003), Greg Hamerly and Charles Elkan show some ...
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Xcode 4 hangs at “Attaching to (app name)”

...n in the simulator or iOS device. It was working perfectly in Xcode 3, but all of a sudden now when I press run the program stops at "Attaching to...". There doesn't seem to be any other info to help with this problem either. ...
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A worthy developer-friendly alternative to PayPal [closed]

...ange from PayPal because I think they are expensive and it doesn't work in all countries. Furthermore, I think that the API is sufficient, but could be better. The API documentation, however, is total utter crap . ...
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How do I strip all spaces out of a string in PHP? [duplicate]

How can I strip / remove all spaces of a string in PHP? 4 Answers 4 ...
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How does the new automatic reference counting mechanism work?

...rty assignments are inexpensive (as discussed here). I know I'm replacing all of my existing Mac GC code with ARC implementations. As to whether this could be extended to other languages, it seems geared around the reference counting system in Objective-C. It might be difficult to apply this to J...
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How do I rename a column in a SQLite database table?

...mn name is changed both within the table definition itself and also within all indexes, triggers, and views that reference the column. If the column name change would result in a semantic ambiguity in a trigger or view, then the RENAME COLUMN fails with an error and no changes are applied. Image ...
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How do I print a double value without scientific notation using Java?

... but it showed dexp: 12345681.000000 which is wrong value.And actually after then I want to display it on my web page where it display like this 1.2345678E7.Is there anyway through which i can store it in any double like 12345678 and any other way? – Despicable ...
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How to update a pull request from forked repo?

...to that forked repo. I then opened a pull request. The pull request listed all the changes I wanted. 5 Answers ...
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What vim plugins are available for Eclipse? [closed]

...ave marks. It provides the core functionality of Vim text editing. If I recall correctly you can even have a simple vimrc configuration file. You can do a free trial to test it out. Vrapper Apparently Vrapper has macros and marks, as well as the following commands: Motions h j k l w W e E b B f ...
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What's the difference between xsd:include and xsd:import?

... Another difference is that <import> allows importing by referring to another namespace. <include> only allows importing by referring to a URI of intended include schema. That is definitely another difference than inter-intra namespace importing. For exam...