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

...imation of the number of clusters" by Dan Pelleg and Andrew Moore in ICML 2000. Another approach is to start with a large value for k and keep removing centroids (reducing k) until it no longer reduces the description length. See "MDL principle for robust vector quantisation" by Horst Bischof, Ale...
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virtualenv --no-site-packages and pip still finding global packages?

... 108 I had a problem like this, until I realized that (long before I had discovered virtualenv), I ...
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Output to the same line overwriting previous output?

... Here's code for Python 3.x: print(os.path.getsize(file_name)/1024+'KB / '+size+' KB downloaded!', end='\r') The end= keyword is what does the work here -- by default, print() ends in a newline (\n) character, but this can be replaced with a different string. In this case, ending the l...
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Using Enums while parsing JSON with GSON

...m.out.println(element.delimiter); System.out.println(element.scope.get(0)); } } class AttributeScopeDeserializer implements JsonDeserializer<AttributeScope> { @Override public AttributeScope deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws...
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JavaScript: replace last occurrence of text in a string

... answered Apr 28 '10 at 13:12 PointyPointy 359k5454 gold badges508508 silver badges567567 bronze badges ...
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How to store Node.js deployment settings/configuration files?

...e'; config.redis.port = 6379; config.web.port = process.env.WEB_PORT || 9980; module.exports = config; I load the config from my project: var config = require('./config'); and then I can access my things from config.db_host, config.db_port, etc... This lets me either use hardcoded paramete...
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Mockito matcher and array of primitives

...Eq(expectedArray) – John Oxley Jan 30 '13 at 8:35 5 Or Matchers.<byte[]>any(). ...
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Getting the name of a variable as a string

... | edited Aug 13 at 16:06 answered Dec 16 '19 at 20:52 P...
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Regexp Java for password validation

... Try this: ^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%^&+=])(?=\S+$).{8,}$ Explanation: ^ # start-of-string (?=.*[0-9]) # a digit must occur at least once (?=.*[a-z]) # a lower case letter must occur at leas...
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How do I detect “shift+enter” and generate a new line in Textarea?

...olution below is better I suggest using that: https://stackoverflow.com/a/6015906/4031815 My solution I think you can do something like this.. EDIT : Changed the code to work irrespective of the caret postion First part of the code is to get the caret position. Ref: How to get the caret co...