out of memory or dimension too large for Octave's index type

[Jiang, Yanda [E CPE]]

Dear Sir/Madam,

I am a phd student who is using octave for my research work.

While running my code, I got this error message. 

After hours of investigation, I believe the reason is one matrix is 232100*71368.

Do you have any method to solve this problem?

Many thanks.

Best,

Yanda