The phrase "abstract ratio" is correct and usable in written English.
It can be used in contexts involving mathematics, statistics, or theoretical discussions where a ratio is not tied to concrete values but rather represents a conceptual or theoretical relationship.
Example: "In our analysis, we found that the abstract ratio of input to output can vary significantly depending on the underlying assumptions."
Alternatives: "theoretical ratio" or "conceptual ratio".
In 1873 the German mathematician Felix Klein showed how the basic concepts in Euclidean geometry of length and angle magnitude could be defined solely in terms of von Staudt's abstract cross ratio, bringing the two geometries together again, this time with projective geometry occupying the more basic position.
In Figure 3, for the "dissimilar full text" group, the frequency of citation pairs drops dramatically as the abstract similarity ratio rises from 0.4 to 0.55, while in the "similar full text" group, the frequency of citation pairs consistently rises as the abstract similarity rises.
Related sites National Bureau of Economic Research Human Nature Review's page on human sex ratios Effects of war on the human sex ratio (abstract, with link to full article).
The abstract-to-publication ratio was 5/89 for swine trials and 6/65 for cattle trials.
154 cattle or swine vaccine trials presented at veterinary practitioner conferences held in the United States from 1988 to 2003 were the test base to evaluate the following: abstract-to-publication ratio, positive-outcome ratios, differences between proceeding and subsequent journal articles, and compliance with the CONSORT Statement extension for abstracts.
From each study, we abstracted the odds ratio (OR) or relative risk (RR) indicating the proportion tested in the intervention group compared to controls.
We performed the linear regression of full text similarity ratio versus abstract similarity ratio among the citation pairs whose abstract similarity and full text similarity ratios were both higher than 0.4 (Figure 1).
50,965 48,942 Regression results for the ratio of abstract words among positive and negative words as a function of gender, profession, and birth century.
We combine these counts into ratios of abstract positivity and negativity computed as (r_=A_/W_) and (r_=A_/W_).
Table 5 shows the ratios of abstract terms among positive and negative terms when aggregating all the text in the summaries of the biographies of men and women separately.
