"inverse index" is a correct and usable phrase in written English.
It is used to refer to a form of indexing in which each keyword in a text is associated with a list of all documents in which that keyword appears. For example, an inverse index might contain an entry for "baseball" that lists all documents where the word was used.
Then there are the inverse index funds.
These funds also operate differently from the rest of the pack, which is dominated by inverse index funds.
The two largest managers of inverse index funds are Rydex Investments, based in Rockville, Md., and ProFunds, based in Bethesda, Md .After the S.E.C. announced the short-selling ban on financial stocks, both Rydex and ProFunds stopped accepting new investments, even from existing shareholders, into their inverse financial-sector E.T.F.'s.
Some inverse index funds and exchange-traded funds are leveraged to triple any move, providing outsize profits in a market slide, but enormous risks should the market keep marching higher.
Similarly, ProShares, known for its leveraged and inverse index funds, is looking to make its stab at active, playing on the trend of emerging market debt.
In utilizing bear market funds to neutralize market risk, an inverse index fund essentially guarantees this protection.
This new result suggests that the inverse power index of the energy spectrum of source electrons responsible for generating diffuse TeV gamma rays through inverse Compton effect should be steeper than 2.2 and 2.1 for IG and OG planes, respectively, with 99%C.L.
{text{Inversed Index values}} = frac{{{text{Maximun values}} - {text{Observed values}}}}{{{text{Maximum values}} - {text{Minimum values}}}} (5).
For measuring the mar resistance of the pigmented coatings we applied the Taber Abrasion method and the inverse wear index, F [=I−1, cycles/cg (wear index I: weight loss (cg) per number of cycles)] was directly related to the mar resistance.
The coverage, the inverse Simpson index and the rarefaction curves were also generated using MOTHUR.
