ARモデルMeanings1nounautoregressive modelmathematicsTechnical term in mathematics and statistics for a time-series model where the current value depends on past values.See also: 自己回帰モデル時じ系けい列れつ分ぶん析せきでは、ARモデルがよく使つかわれる。In time series analysis, AR models are often used.