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Math.random() versus Random.nextInt(int)
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How are feature_importances in RandomForestClassifier determined?
...erion that you use (e.g. Gini, Entropy, MSE, ...). Its the impurity of the set of examples that gets routed to the internal node minus the sum of the impurities of the two partitions created by the split.
Its important that these values are relative to a specific dataset (both error reduction and t...
Javascript: formatting a rounded number to N decimals
... s.indexOf('.') + 4) s += '0';
(Note that this assumes that the regional settings of the client uses period as decimal separator, the code needs some more work to function for other settings.)
share
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How can I suppress column header output for a single SQL statement?
... 1 | pete |
| 2 | john |
| 3 | mike |
+------+-------+
3 rows in set (0.00 sec)
Credit to ErichBSchulz for pointing out the -N alias.
To remove the grid (the vertical and horizontal lines) around the results use -s (--silent). Columns are separated with a TAB character.
mysql -s ...
us...
常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...gout,shutdown,reboot,useradd,passwd,ls,ll,cd,mkdir,vi,cp,rm,mv,chmod,chown,find,grep,tail,tar,gzip,fdisk,kill,netstat等。一、注销，关机，重启，新建用户、删除用户
1. 注销系统的命令
logout 、exit
这两个命令都可以用来退出当前所登录的服务器，若想...
Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
...ing some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used?
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What does the constant 0.0039215689 represent?
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How to modify memory contents using GDB?
...
The easiest is setting a program variable (see GDB: assignment):
(gdb) l
6 {
7 int i;
8 struct file *f, *ftmp;
9
(gdb) set variable i = 10
(gdb) p i
$1 = 10
Or you can just update arbitrary (writable) location b...
Using the scrollwheel in GNU screen
How can I setup GNU screen to allow the mouse's scrollwheel to scroll around in the scrollback buffer? I tried to Google about this, but most hits were on how to allow applications inside screen to use the scrollwheel.
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Changing the “tick frequency” on x or y axis in matplotlib?
...
You could explicitly set where you want to tick marks with plt.xticks:
plt.xticks(np.arange(min(x), max(x)+1, 1.0))
For example,
import numpy as np
import matplotlib.pyplot as plt
x = [0,5,9,10,15]
y = [0,1,2,3,4]
plt.plot(x,y)
plt.xticks(...