If you are looking for a introduction to Machine Learning, you must visit the Stanford University Youtube channel. You will find a complete course about this topic, taught by Professor Andrew Ng. This is the info of the course:

This course (CS229) provides a broad introduction to machine learning and statistical pattern recognition. Topics include supervised learning, unsupervised learning, learning theory, reinforcement learning and adaptive control. Recent applications of machine learning, such as to robotic control, data mining, autonomous navigation, bioinformatics, speech recognition, and text and web data processing are also discussed.

public boolean getScrollableTracksViewportWidth() {

if (autoResizeMode != AUTO_RESIZE_OFF) {

if (getParent() instanceof JViewport) {

return (((JViewport)getParent()).getWidth() > getPreferredSize().width);

}

}

return false;

}

Source: DaniWeb Forum

This morning I tried to read an article of the blog, and I got an “Error 500″ message. First of all, I checked that my Wordpress was working, because I could access to my dashboard. Next step: deactivate all the plugins. But it didnt work. So lets take a look into the Apache log. What I found was:

SoftException in Application.cpp:252: File “/home/xxxxx/public_html/blog/index.php” is writeable by group

Thats it: a permissions problem. So I used Cyberduck (but you can use any other FTP application) to fix it. Delete the “write” permissions of Group and Others:

Note: be sure to apply this to all your files and directories. In my case, as you can see in the image, I used the option “Apply changes recursively”. Your FTP application should have the option to do something like this.

Can’t copy / move ‘.svn-base’ to ‘.tmp’: The system cannot find the file specified.

The problem was that there were two files in the repository whose names differed only in case (e.g., File.txt and file.txt). This is possible in Unix-based systems, but not in Windows. So due to I was using a Windows computer, I couldnt update my local copy. I you have this problem, just delete or rename one of the files in the repository.

1. Download the latest version of Erlang. In my case, it was R13B02-1, so I got a file named otp_src_R13B02-1.tar.gz
2. After decompressing the file:

$ cd otp_src_R12B-2
$. /configure
$ make
$ sudo make install

These are the standard steps, but I had a problem with the “make” command. I got the following error:

gen/wxe_events.cpp: In function ‘void initEventTable()’:
gen/wxe_events.cpp:277: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_MIDDLE_DOWN’ was not declared in this scope
gen/wxe_events.cpp:278: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_MIDDLE_UP’ was not declared in this scope
gen/wxe_events.cpp:279: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_RIGHT_DOWN’ was not declared in this scope
gen/wxe_events.cpp:280: error: ‘wxEVT_COMMAND_AUINOTEBOOK_TAB_RIGHT_UP’ was not declared in this scope
gen/wxe_events.cpp:281: error: ‘wxEVT_COMMAND_AUINOTEBOOK_PAGE_CLOSED’ was not declared in this scope
gen/wxe_events.cpp:282: error: ‘wxEVT_COMMAND_AUINOTEBOOK_DRAG_DONE’ was not declared in this scope
gen/wxe_events.cpp:283: error: ‘wxEVT_COMMAND_AUINOTEBOOK_BG_DCLICK’ was not declared in this scope
make[4]: *** [i386-apple-darwin9.8.0/wxe_events.o] Error 1
make[3]: *** [release] Error 2
make[2]: *** [release] Error 2
make[1]: *** [release] Error 2
make: *** [install.libs] Error 2

The solution was to build Erlang without wxwidget support, so the steps I followed were:

$ cd otp_src_R12B-2
$. /configure
$ touch lib/wx/SKIP
$ make
$ sudo make install

{
“\UF729″ = “moveToBeginningOfLine:”;
“$\UF729″ = “moveToBeginningOfLineAndModifySelection:”;
“\UF72B” = “moveToEndOfLine:”;
“$\UF72B” = “moveToEndOfLineAndModifySelection:”;
“\UF72C” = “pageUp:”;
“\UF72D” = “pageDown:”;
}

Save the file as DefaultKeyBinding.dict into your ~/Library/KeyBindings directory and reboot your Mac.

public class Properties extends Hashtable {

protected Properties defaults;
public Properties();
public Properties(Properties defaults);
public String getProperty(String key);
public String setProperty(String key, String defaultValue);
public Enumeration propertyNames();
public void load(InputStream in) throws IOException;
public void save(OutputStream out, String header);
public void list(PrintStream out);

}

It extends java.util.HashTable, so this class stores each property as a pair of (key, value). If your application needs some parameters to work, you can include them in a file, and then, use a java.util.Properties object to load them.

Properties props = new Properties();
FileInputStream file = new FileInputStream(”propertiesfile.txt”);
props.load(file)

Using these three lines, you will have a java.util.Properties object filled with the content of “propertiesfile.txt”. But, whats the format of this file? It has to contain a pair per line, and both of them have to be separated by a white space, ‘=” or ‘:’. The following file would be correct:

Property1=Value1
#This is a comment
Property2:Value2
Property3 Value3

After loading this file, how can we access the properties? If we want to use the value of “Property1″:

String value = getProperty(”Property1″);

Or if we want to modify the value of “Property2″:

setProperty(”Property2″,”New value”);

More info: java.util.Properties

open -e ~/.profile

In case you dont have a .profile file, you have to create it:

touch ~/.profile

You have to include a line like this:

export PATH=(path-you-want-to-add):$PATH

For example, lets imagine you want to add the file whatever.jar, located in your Documents folder. You would write:

export PATH=~/Documents/whatever.jar:$PATH

Easy, isnt it?

“Simple Songs” by Big Bad Voodoo Daddy

Simple songs about simple things
Is what makes my baby swing
Shes got eyes like an angel smiles like a devil
Man you know she’s the real thing
so
When my baby’s not around
The whole world hears my poor heart pound
Cause
“Man you know that she’s the one for me”

When I see that crazy smile
Makes it all well worth while
Love my baby can’t deny
Couldn’t hide it if I try

So at the end of the day I can clearly say
She’s the only one for me.
No one else Id rather see
Nowhere else I’d rather be

Than hangin’ with my baby tight
Morning, afternoon & night
Love that girl I can’t deny
Couldn’t hide it if I try

If you wanna know more, the keyword is “notpron”