سوال ۱۶ کنکور ارشد علوم کامپیوتر ۱۴۰۵

PASSAGE 2 (excerpt): "... Although ANNs are too simple a model to mimic the behavior of the brain, they are very useful in many applications of soft computing. Enthusiasm for them has periodically waned—as their capabilities seemed to reach a limit—but then waxed again as new methods and algorithms were developed. ..."

The underlined word "Enthusiasm" in paragraph 2 is closest in meaning to ………….. .