大约有 45,000 项符合查询结果(耗时:0.0706秒) [XML]

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What is an intuitive explanation of the Expectation Maximization technique? [closed]

...e could find the exact means if we wanted). This is, generally speaking, known as maximum likelihood estimation. Given some data, we compute the value of a parameter (or parameters) that best explains that data. Now imagine that we cannot see which value was sampled from which group. Everything lo...
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How to configure postgresql for the first time?

...stgres: local      all     postgres     peer md5 To know what version of postgresql you are running, look for the version folder under /etc/postgresql. Also, you can use Nano or other editor instead of VIM. Restart the database : sudo /etc/init.d/postgresql restart (Here ...
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How much does it cost to develop an iPhone application? [closed]

...wa) $50-150K estimate with the 22 day Obama app. Take another hit, dude. Now if you want to build backend services for your app, that number's going to go up even more. Everyone seems surprised that Instagram chewed through $500K in venture funding to build a new frontend and backend. I'm not. ...
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Detect viewport orientation, if orientation is Portrait display alert message advising user of instr

... Support for this is much stronger now. This seems to be a much more robust answer now then the accepted one. – JonK Jun 28 '16 at 21:56 2 ...
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How to save CSS changes of Styles panel of Chrome Developer Tools?

... You can save your CSS changes from Chrome Dev Tools itself. Chrome now allows you to add local folders to your Workspace. After allowing Chrome access to the folder and adding the folder to the local workspace, you can map a web resource to a local resource. Navigate to the Sources panel o...
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How do I get the current time only in JavaScript

... // => 30 d.getSeconds(); // => 51 or var d = new Date(); // for now d.getHours(); // => 9 d.getMinutes(); // => 30 d.getSeconds(); // => 51 share | improve this answer ...
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DateTime format to SQL format using C#

... try this below DateTime myDateTime = DateTime.Now; string sqlFormattedDate = myDateTime.ToString("yyyy-MM-dd HH:mm:ss.fff"); share | improve this answer | ...
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Semantic-ui vs Bootstrap [closed]

... that we can't see the differences between Bootstrap and Semantic-UI right now, Semantic-ui is new, so we have to let the time decide :) My opinion: Semantic-UI design is better than Bootstrap and more clean, easy to use, strict coding, useful components, lightweight. I see the future of Frameworks...
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Visual Studio debugging “quick watch” tool and lambda expressions

...e function Example is run in the debugger it will stop at the Break line. Now imagine if the user typed the following into the watch window (Func<int>)(() => v2); In order to properly execute this the debugger (or more appropriate the EE) would need to create a closure for variable v2. ...
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How do I subtract minutes from a date in javascript?

... Once you know this: You can create a Date by calling the constructor with milliseconds since Jan 1, 1970. The valueOf() a Date is the number of milliseconds since Jan 1, 1970 There are 60,000 milliseconds in a minute :-] ...it isn'...