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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...o training and validation (again, 80/20 is a fair split).
Subsample random selections of your training data, train the classifier with this, and record the performance on the validation set
Try a series of runs with different amounts of training data: randomly sample 20% of it, say, 10 times and obs...
Version of SQLite used in Android?
...r cursor = SQLiteDatabase.openOrCreateDatabase(":memory:", null).rawQuery("select sqlite_version() AS sqlite_version", null);
String sqliteVersion = "";
while(cursor.moveToNext()){
sqliteVersion += cursor.getString(0);
}
This is just a piece of quick, dirty code to retrieve the sqlite version. ...
Access “this” from Java anonymous class
...
Container.this.select();
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CryptographicException 'Keyset does not exist', but only through WCF
...t; Run -> MMC
File -> Add/Remove Snapin
Add the Certificates Snap In
Select Computer Account, then hit next
Select Local Computer (the default), then click Finish
On the left panel from Console Root, navigate to
Certificates (Local Computer) -> Personal -> Certificates
Your certificate ...
How do I detect if Python is running as a 64-bit application? [duplicate]
... in this case it has to do with the way Apple implemented their multi-arch selection feature. I'm adding a note to ensure we look at this when the python.org OS X multi-arch selection feature is finalized.
– Ned Deily
Dec 3 '09 at 20:59
...
How to split data into training/testing sets using sample function
...101) # Set Seed so that same sample can be reproduced in future also
# Now Selecting 75% of data as sample from total 'n' rows of the data
sample <- sample.int(n = nrow(data), size = floor(.75*nrow(data)), replace = F)
train <- data[sample, ]
test <- data[-sample, ]
By using caTools pa...
Could not load file or assembly 'System.Web.Mvc'
...
In VS2010, right click the project in the Solution Explorer and select 'Add Deployable Dependencies'. Then check the MVC related check boxes in the following dialog.
This creates a '_bin_deployableAssemblies' folder in the project which contains all the .dll files mentioned in other answ...
Rename column SQL Server 2008
...also recommend adding some additional security to it.
IF EXISTS (
SELECT 1
FROM sys.columns
WHERE
name = 'OldColumnName' AND
object_name(object_id) = 'TableName'
) AND
NOT EXISTS (
SELECT 1
FROM sys.columns
WHERE
...
How do I use FileSystemObject in VBA?
...crrun.dll
To reference this file, load the
Visual Basic Editor (ALT+F11)
Select Tools > References from the drop-down menu
A listbox of available references will be displayed
Tick the check-box next to 'Microsoft Scripting Runtime'
The full name and path of the scrrun.dll file will be displayed...
How do I remove version tracking from a project cloned from git?
...efer to this article for a visual guide
In the view menu on the toolbar, select Options
In the Advanced Settings section, find Hidden files and Folders under the Files and Folders list and select Show hidden files and folders
Close the options menu and you should see all hidden folders and files ...