Abstract: A minimum IC operating voltage searching method includes acquiring a corner type of an IC, acquiring ring oscillator data of the IC, generating a first prediction voltage according to the corner type and the ring oscillator data by using a training model, generating a second prediction voltage according to the ring oscillator data by using a non-linear regression approach under an N-ordered polynomial, and generating a predicted minimum IC operating voltage according to the first prediction voltage and the second prediction voltage. N is a positive integer.

Abstract: An association matching method and an association matching system are provided. In the method, first reference coordinates of a first reference position in a first image on a first local map are determined, and second reference coordinates of a second reference position in a second image on a second local map are determined. The first local map and the second local map are mapped to a global map. The first reference coordinates of the first reference position and/or the second reference coordinates of the second reference position is mapped to coordinates on the global map according to a conversion relationship. The conversion relationship is corrected according to coordinates of third reference positions in one or more third images and fourth reference positions in one or more fourth images mapped to the global map through the conversion relationship. Thus, the performance of object matching may be improved.