COAL GAS CONCENTRATION PREDICTION METHOD BASED ON COLLABORATIVE FILTERING, AND DEVICE AND REFRIGERATOR

The present invention discloses a method and device for predicting a gas concentration based on collaborative filtering, and a refrigerator. The method comprises: acquiring gas-related scenario information of a plurality of historical users having a gas leakage; acquiring scenario information of a current user, and calculating a similarity in the scenario information between the plurality of historical users and the current user via a collaborative filtering algorithm; and acquiring a first user set by selecting the historical users whose similarity exceeds a threshold, and acquiring a gas leakage predicting equation for the current user based on gas leakage data of the historical users in the first user set. Compared with the prior art, the method for predicting the gas concentration according to the present invention performs linear fitting on the gas leakage data of the historical users to acquire the linear regression equations, and predicts the gas leakage data of the current user via the linear regression equations.