OutOfMemoryError: Java heap space

guoguibing / librec

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Closed hphphphphp closed 7 years ago

hphphphphp commented 7 years ago

hi; I am get error : OutOfMemoryError: Java heap space

for dataset Epinions and array E

E = new double[numUsers][numItems];

hphphphphp commented 7 years ago

and; how to use from Flixster dataset?? my output product error :for flixster ArrayIndexOutOfBoundsException

hphphphphp commented 7 years ago

I want dataset Ciao : please sent to me link download; this link do not work http://www.public.asu.edu/~jtang20/datasetcode/truststudy.htm

SunYatong commented 7 years ago

@hphphphphp

Use Table or SparseMatrix if you want to store the rating data. Your double array will cost 44 GB ( 8 byte 40163 139738 ) memory.
Flixster data file is not suitable for librec. You have to pre-process it to fit our format.
I Googled Ciao and the first link just works well https://www.librec.net/datasets.html. Don't be lazy please...

And Remember to close your issues if the problems are solved ^_^