Это не перевод СЛОВА accuracy где бы оно не встретилось. Мы переводим ГЛОССАРИЙ. Предметный указатель. Известной книжки.
Да вот же он:
http://nlp.stanford.edu/IR-book/pdf/99back.pdf (!)
Смотрим что имеется в виду:
* accuracy, 155
Открываем главу "Evaluation in information retrieval"
http://nlp.stanford.edu/IR-book/pdf/08eval.pdfЧитаем:
IR system returns a set of documents for a query. We will see later how to
extend these notions to ranked retrieval situations.
Precision (P) is the fraction of retrieved documents PRECISION that are relevant
(8.1) Precision = #(relevant items retrieved)/#(retrieved items) = P(relevant|retrieved)
Recall (R) is the fraction of relevant documents that are retrieved
(8.2) Recall = #(relevant items retrieved) / #(relevant items) = P(retrieved|relevant)
These notions can be made clear by examining the following contingency table:
(8.3)
|| ------------| Relevant ----------| Nonrelevant -------|
|| Retrieved --| true positives (tp)| false positives (fp)|
||Not retrieved|false negatives (fn)|true negatives (tn)--|
Then:
(8.4)
P = tp/(tp+ f p)
R = tp/(tp+ f n)
ACCURACY
An obvious alternative that may occur to the reader is to judge an infor
mation retrieval system by its accuracy, that is, the fraction of its classifications
that are correct. In terms of the contingency table above, accuracy =
(tp + tn)/(tp + fp + fn + tn).
This seems plausible, since there are two actual classes, relevant and nonrelevant, and an information retrieval system can be thought of as a two-class classifier which attempts to label them as such (it retrieves the subset of documents which it believes to be relevant).
This is precisely the effectivenessmeasure often used for evaluatingmachine
learning classification problems.
Как видите, значение - более чем конкретное. Понять, что именно нужно перевести - НЕТРУДНО. Особенно если вы и правда хотите помочь в переводе, а не обсудить еще сто более-менее обывательских смыслов слова accuracy.
