Memory device and data searching method thereof

A memory device comprising:

• a plurality of word lines;
• a plurality of bit lines;
• and
• a plurality of memory cells on a plurality of intersections between the word lines and the bit lines;
• wherein
• a first feature vector of a first object is stored on the memory cells on a first word line among the word lines;
• a feature vector of a search data is input into the memory cells on the first word line of the memory device via the bit lines;
• logic operations on the feature vector of the search data with the first feature vector of the first object are performed to generate a plurality of first logic operation results for determining whether the search data is matched with the first object,
• wherein, a first word line group of the word lines are for storing a plurality of feature vectors of a plurality of objects, and a second word line group of the word lines are for storing a plurality of mask vectors of the plurality of objects, wherein the plurality of mask vectors of the plurality of objects are generated based on the mask ratio,
• wherein, the logic operations are performed on the feature vector of the search data, the first feature vector of the first object and a first mask vector of the plurality of mask vectors corresponding to the first object, to generate the plurality of first logic operation results for determining whether the search data is matched with the first object.