I have a PHP application that allows the user to specify a list of countries and a list of products. It tells them which retailer is the closest match. It does this using a formula similar to this:
How do I show a list of \'most popular (articles|posts|whatever) for a period such as the past day? (Essentially replicate the functionality of the Radioactivity Drupal mod开发者_开发知识库ule.)Here\'
Is it possible to get same kmeans clusters for every execution for a particular data set. Just like for a ran开发者_运维问答dom value we can use a fixed seed. Is it possible to stop randomness for clu
I read about logistic regression on Wikipedia and it talks of t开发者_运维百科he equation where z, the output depends on the values of beta1, beta2, beta3, and so on which are termed as regression coe
I have an interesting issue happening in Microsoft SQL when searching a TEXT field.I have a table with two fields, Id (int) and Memo (text), populated with hundreds of thousands of rows of data.Now, i
We\'re seeing a huge difference between these queries. The slow query SELECT MIN(col) AS Firstdate, MAX(col) AS Lastdate
This question already has answers here: Closed 11 years ago. Possible Duplicate: Python Multiple Linear Regression using OLS code with specific data?
I know about basic data types and that float types (float,double) can not hold some numbers exactly. In porting some code from Matlab to Python (Numpy) I however found some significant differences in
I would like to get some stats开发者_JAVA技巧 programmatically about my app; for example: total downloads, active installs...
I have a table for posts as ID,开发者_如何学Python Title, Content, etc. I just added a column as counter. It is a simple counter of visits, as every time it will be updated as $i+1. In this method, I
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