| 释义 |
entropy (S) 1. In physics, and particularly in the area of thermodynamics, a measure of the amount of energy unavailable to do work in a closed system. 2. The degradation of the matter and energy in the universe to the point of inert uniformity.The dispersal of energy. 3. In information theory, a measure of the content of a message evaluated with respect to its probability of occurrence, or uncertainty of occurrence, depending on your perspective. 4. In communications, a measure of the randomness of signal noise occurring in transmission. |