(Greek: to aim at, to guess, to conjecture; to aim, to target, to mark)
2. Subject to the laws of probability; not predictable within a given time limit or spatial framework, as the disintegration of a single radioactive element; such as, the stochastic phenomena of microphysics.
3. Denoting the process of selecting, from among a group of theoretically possible alternatives, those elements or factors whose combination will most closely approximate a desired result; such as, a stochastic model.
4. In cybernetics, partially random or uncertain, not continuous; a stochastic variable is neither completely determined nor completely random; in other words, it contains an element of probability. A system containing one or more stochastic variables is probabilistically determined.
5. Etymology: from "pertaining to conjecture"; from Greek stokhastikos, "able to guess, conjecturing"; from stokhazesthai, "guess", from stokhos, "a guess, aim, target, mark"; literally, "pointed stick set up for archers to shoot at".
The sense of "randomly determined" is first recorded in 1934, from German Stochastik.
First employed in storing particles of antimatter, which are expensive to manufacture and should not be wasted.
If, in addition, the sum of the entries in each column equals one, the matrix is said to be doubly stochastic.
2. Characterized by being involved or subject to probabilistic behavior.
3. Involving guesswork or conjecture; random; involving random or unpredictable values.
4. Relating to being susceptible to random influences and; therefore, subject to the laws of probability; the opposite of deterministic.