C codes to compute tf and df for all substrings in a corpus.

C codes to appear in the paper:

Mikio Yamamoto and Kenneth W. Church. 2001. Using suffix arrays
to compute term frequency and document frequency for all substrings
in a corpus. Computational Linguistics, 27:1, pages 1-30.

The corrected version of Figure 7 in the above paper

print_LDIs.c

print_LDIs_stack.c

print_LDIs_with_df.c

C codes with the main function and sample data for the demonstration.

demo_print_LDIs.c

demo_print_LDIs_with_df.c

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Usage:

% cc -o tfdf demo_print_ldis_with_df.c

% tfdf