Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Weight formulas.
| Formula | Description |
|---|---|
| X2 | Sum of chi-square values for each term in a sentence. |
| ±X2 | Sum of chi-square values for each term in a sentence, with the sign of a term’s weight determined by whether it exists predominately in the positive or negative set. |
| GImod | Sum of modified Gini index (Equation 1) for each term in a sentence. |
| GImod* X2 | Sum of modified Gini index multiplied by chi-square for each term in a sentence. |
