## First Sense > we use the phrase “machine learning algorithm” to mean a system that makes predictions based on in- put data. We refer to these algorithms as predictors. 「機械学習アルゴリズム」：入力されたデータに基づいて予測を行うシステム 予測器（predictors） ## Second Sense [[📖Mathematics for Machine Learning]] 1.1 Finding Words for Intuitions > we use the exact same phrase “machine learning algorithm” to mean a system that adapts some internal parameters of the predictor so that it performs well on future unseen input data. Here we refer to this adapta- tion as training a system. 将来の未見の入力データに対して良好な性能を発揮するように予測器の内部パラメータを適応させるシステム 適応(adaptation)=システムのtraining