IDF is used in most search engines today, usually as part of the tf-idf weighting scheme.

SpamAssassin deploys hundreds of rules, adding more all the time and readjusting the weighting scheme.

Even economists who accept this new procedure acknowledge that it creates a distortion because of the particular weighting scheme underlying the data.

Also, while capitalization-weighting is the standard in equity index construction, different weighting schemes exist.

We use a relative weighting scheme, which assigns greater significance to sites with high signal-to-noise and consistent sampling.

The researchers also studied the effect of their weighting scheme on small-cap stocks and foreign markets.

A weighting scheme with cosine function is used.

The weighting schemes vary depending on the variables being measured.

Such a weighting scheme would not, of course, eliminate quarterly seasonal effects.

It is customary to define the average opacity, calculated using a certain weighting scheme.