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

...core range_n_clusters = [2, 3, 4] # clusters range you want to select dataToFit = [[12,23],[112,46],[45,23]] # sample data best_clusters = 0 # best cluster number which you will get previous_silh_avg = 0.0 for n_clusters in range_n_clusters: clusterer = KMeans...
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Set value of hidden field in a form using jQuery's “.val()” doesn't work

...ontribute to any problems you're having, and specifying a more complicated selector just slows things down and doesn't look as neat. Example at http://jsbin.com/elovo/edit, using your example code at http://jsbin.com/elovo/2/edit ...
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Is a LINQ statement faster than a 'foreach' loop?

...ter than a flat foreach, but most likely you wouldn't have done a blanket "select * from foo" anyway, so that isn't necessarily a fair comparison. Re PLINQ; parallelism may reduce the elapsed time, but the total CPU time will usually increase a little due to the overheads of thread management etc. ...
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Why does Oracle 9i treat an empty string as NULL?

... @sehe the confusing bit for me is select 1 from dual where ('' is null) – matt freake Aug 22 '13 at 15:58  |  ...
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Installing CocoaPods: no response

...rnet. you can check this by following below steps: Open Activity Monitor Select Network option Check below Google Chrome. (ruby downloading) share | improve this answer | ...
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SASS - use variables across multiple files

... This should be now the selected answer, since "import" is marked as deprecated and will be removed in the future. – TyrionGraphiste Jun 4 at 13:32 ...
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Print only?

...I was able to solve this by using some additional display:none styling for selected items but perhaps a more general solution is achievable by some combination of also forcing heights, overflow:none and absolute positioning for all divs or something. – Malcolm MacLeod ...
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Import existing source code to GitHub

...nd "Extended description" as desired. By default, all of your files should selected with checkmarks already. Click the "Commit & Sync" button. Now you will be prompted to add the name and description of your project as well as which account to push it to (if you have multiple). Click the "Push ...
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How to allow only numeric (0-9) in HTML inputbox using jQuery?

...n(inputFilter) { return this.on("input keydown keyup mousedown mouseup select contextmenu drop", function() { if (inputFilter(this.value)) { this.oldValue = this.value; this.oldSelectionStart = this.selectionStart; this.oldSelectionEnd = this.selectionEnd; } e...
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How to get rid of blank pages in PDF exported from SSRS

...t margin Close and go back to the design surface In the Properties window, select Body Click the + symbol to expand the Size node Make a note of the value for Width To render in PDF correctly Body Width + Left margin + Right margin must be less than or equal to Page width. When you see blank pages...