viewing reports only displays 30 matches

[SehamAAlharbi]

Hello,

I am new to JPlag and was wondering if there is any way to display more than 30 matches when using the API? my data set contains over 80 Java files and for some reason, the report only shows the top 30 matches.

Thanks

[tsaglam]

You can define how many matches are going to be displayed with a CLI parameter or programmatically via the options.
Which version of JPlag are you using? v3.0.0 or older? For 3.0.0 and newer, the CLI argument is -n, and for legacy and older, it is -m.
In the options, it also depends on the version but should be something like maximumNumberOfComparisons.

[FaizAlam]

Hi @tsaglam, I wanted to ask a clarification regarding the same topic. When i run jplag against my submissions data without mentioning -m option (whose default value is 20), it generates 30 html match files. But when i re-run jplag with -m 40 it generates 40 html match files.

I do not understand by default how many number of match files should be generated. Going by the default of -m it should be 20 but sometimes 30 or 31 match files are generated. I am using jplag-2.12.1

[tsaglam]

No, there is not really a limit. Theoretically, for 65000 submissions you will come close to Integer.MAX_VALUE = ~2 Billion matches, but I would guess this would take quite some time to process anyways.

[FaizAlam]

oh alright, i thought 1000 is the limit. I am generating plag report for 312 submission, which would made upto 48516 pairs. and I am using this command java -jar /home/ubuntu/Jplag/jplag-2.12.1-SNAPSHOT-jar-with-dependencies.jar -m 80% -l c/c++ -r cppRes -s cpp to generate report of all the pairs having similarity more than 80%.

This is how my index file looks like:

as you can see there are more than 1569+673 submissions pairs which have more than 80% similarity. So the number of files generated should be this much only, but I only get 1000 match files.

[tsaglam]

Maybe this is hardcoded somewhere, but I do not know if that is the case. As previously mentioned, the legacy version of JPlag has some bugs and also the report generation is somewhat messy. In the current version you can easily export more than 1000 matches.

[FaizAlam]

I found this in legacy file. Maybe this is why it limit report generation to 1000 files.

[tsaglam]

Ah, good catch, this is then probably responsible.