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What's is the difference between train, validation and test set, in neural networks?

...he validation data actually affects the weight configuration indirectly to select the weight configuration. This is where the Test set comes in. This set of data is never used in the training process. Once a model is selected based on the validation set, the test set data is applied on the network m...
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App Inventor 2 台球游戏制作教程 · App Inventor 2 中文网

...i = 1 to length(球X) { for j = i + 1 to length(球X) { var dx = select(球X, j) - select(球X, i) var dy = select(球Y, j) - select(球Y, i) var 距离 = sqrt(dx ^ 2 + dy ^ 2) if 距离 < 2 * 球半径 and 距离 > 0 { listreplace(球VX, i, select(球VX, j)) ...
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Hibernate dialect for Oracle Database 11g?

...e getQuerySequencesString() method, that returns this query: "select sequence_name from user_sequences;" for which the execution returns an empty result from database). Using the dialect org.hibernate.dialect.Oracle9iDialect , or greater, solves the problem, due to a di...
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How to format all Java files in an Eclipse project at one time?

... Right click on the project root and select Source -&gt; Format. This should work for at least version 3.8.1. and above. If the above does not work, you're probably using an older Eclipse-version. In such case you can select your Source Folders by clicking on t...
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How can I create a keystore?

... the lifespan of your app. 4- On the Generate Signed APK Wizard window, select a keystore, a private key, and enter the passwords for both. Then click Next. 5- On the next window, select a destination for the signed APK and click Finish. referance http://developer.android.com/tools/publishing/a...
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How to unstash only certain files?

... relative to stash@{0})). yucer suggests in the comments: If you want to select manually which changes you want to apply from that file: git difftool stash@{0}..HEAD -- &lt;filename&gt; Vivek adds in the comments: Looks like "git checkout stash@{0} -- &lt;filename&gt;" restores the version of t...
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Can CSS detect the number of children an element has?

...i:first-child:nth-last-child(4) ~ li { width: 25%; } The trick is to select the first child when it's also the nth-from-the-last child. This effectively selects based on the number of siblings. Credit for this technique goes to André Luís (discovered) &amp; Lea Verou (refined). Don't you j...
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Python: Select subset from list based on index set

...ecause this will be very familiar syntax to users of R, where this kind of selection is very powerful, especially when nested and/or multidimensional. – Thomas Browne May 25 '14 at 21:11 ...
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Is it possible to center text in select box?

...you could style the dropdown: https://www.filamentgroup.com/lab/jquery-ui-selectmenu-an-aria-accessible-plugin-for-styling-a-html-select.html This plugin hides the select element, and creates span elements etc on the fly to display a custom drop down list style. I'm quite confident you'd be able t...
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How do I add a foreign key to an existing SQLite table?

...n step 8 below. One way to do this is to run a query like the following: SELECT type, sql FROM sqlite_master WHERE tbl_name='X'. Use CREATE TABLE to construct a new table "new_X" that is in the desired revised format of table X. Make sure that the name "new_X" does not collide with any exi...