How to read large data set at hourly interval?

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How to read large data set at hourly interval - Stack Overflow

For example, I have 30million records, stored in our datastore. Then I want to read a fraction of them randomly at 2 hours interval: e.g I want to read 1 million ...

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Other solutions

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Allow always read user data.

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Abdullahi Ibrahim at Yahoo! Answers Mark as irrelevant Undo

Answer:

This is the closest thing I know of, for iOS / Android: http://code.google.com/p/zxing/w...

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Sean Owen at Quora Mark as irrelevant Undo

How can I use a decision tree to classify an unbalanced data set?

My data set has two classes with at most 2000 members in one class and an unlimited number of members in the other class (usually hundreds of thousands).  I have read that it is problematic to use a decision tree for such data: how can I adapt my model...

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Uniformly down sample data points from one class until its ratio to small class is around 3:1, train...

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Tao Xu at Quora Mark as irrelevant Undo

Extracting data

QUESTION: Thanks for your help I finally managed to make all the changes and now it's working fine. Could you please help me so that when the user clicks the button it opens the file automatically using a file location rather than "FD" File...

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Srinivasa, Thank you for the more thorough explanation. I will study tomorrow and try to offer a solution...

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Miningco.com Mark as irrelevant Undo

Reference data within

QUESTION: I need to build a proposal template that will continually reference an item list on either a separatefile or simply an additional worksheet within the same workbook. Preferably a separate file, however I will take whatever I can get. My first...

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Steve Contextures is a great site; lots of good information. The link to another workbook should look...

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Miningco.com Mark as irrelevant Undo

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If you are not familiar with the "binary" system, you should read about it -- I suspect wikipedia...

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sailormouth at Ask.Metafilter.Com Mark as irrelevant Undo

C++ hashing table in data structure

QUESTION: Hello..Zlatko,, I have some question to ask you regarding my project question. This is the question : Write a program to perform hash table using two different hashing functions and two different resolution methods to solve the collision...

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Hello Wale. I wrote a sample hash program in the hope that it will be useful to you. The hash table...

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Miningco.com Mark as irrelevant Undo

How can a physicist get into data science?

There's a huge demand for Data Scientists. I read about well-paying positions demanding multiple skills going unfilled due to not enough talented people to go around. I also read that physicists can do well as Data Scientists.  We're accustomed to dealing...

Answer:

You can try your hand at http://Kaggle.com competitions in your spare time (though I have heard that...

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Mahesh M. Bhatia at Quora Mark as irrelevant Undo

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