help about PostReferenceGH

[mashalahmad]

hey could you please tell what does Copies attribute means in PostRefernceGH table?

and how can I get to know that a class of GitHub has many clones from stack overflow?

I read you paper Attribution Required: Stack Overflow Code Snippets in GitHub Projects where you use CPD to detect the clones. is it suitable? or is there anyway to get it from PostRefernceGH table.

[sbaltes]

could you please tell what does Copies attribute means in PostRefernceGH table?

Sure, Copies indicates how often that exact file appears in the dataset. For a certain FileId, it is equal to:

SELECT COUNT(*)
FROM `sotorrent-org.2018_09_23.PostReferenceGH`
WHERE FileId="<FILE_ID>";

and how can I get to know that a class of GitHub has many clones from stack overflow? I read you paper Attribution Required: Stack Overflow Code Snippets in GitHub Projects where you use CPD to detect the clones. is it suitable? or is there anyway to get it from PostRefernceGH table.

Unfortunately, I can only provide support for the dataset here. It's up to you to find a suitable approach to detect the code clones. You could use CPD, but most likely only on a sample of projects and snippets. However, there are many other code clone detectors available. You could start with these papers:

• Comparison and evaluation of code clone detection techniques and tools: A qualitative approach by Roy et al. (https://dl.acm.org/citation.cfm?id=1531101)
• SourcererCC: Scaling Code Clone Detection to Big-Code by Sajnani et al. (https://ieeexplore.ieee.org/abstract/document/7886988)

The corresponding full paper for the ICSE extended abstract you mentioned is now also available:

• Usage and Attribution of Stack Overflow Code Snippets in GitHub Projects by Baltes and Diehl (http://empirical-software.engineering/publications#emse18-snippets)