Unsupervised Recognition of Informative Features via Tensor Network Machine Learning and Quantum Entanglement Variations  

作　　者：Sheng-Chen Bai Yi-Cheng Tang Shi-Ju Ran 白生辰;唐以成;冉仕举(Department of Physics,Capital Normal University,Beijing 100048,China)

机构地区：[1]Department of Physics,Capital Normal University,Beijing 100048,China

出　　处：《Chinese Physics Letters》2022年第10期12-16,共5页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.12004266 and 11834014);the Foundation of Beijing Education Committees (Grant No.KM202010028013);the support from the Academy for Multidisciplinary Studies,Capital Normal University

摘　　要：Given an image of a white shoe drawn on a blackboard,how are the white pixels deemed(say by human minds)to be informative for recognizing the shoe without any labeling information on the pixels?Here we investigate such a“white shoe”recognition problem from the perspective of tensor network(TN)machine learning and quantum entanglement.Utilizing a generative TN that captures the probability distribution of the features as quantum amplitudes,we propose an unsupervised recognition scheme of informative features with variations of entanglement entropy(EE)caused by designed measurements.In this way,a given sample,where the values of its features are statistically meaningless,is mapped to the variations of EE that statistically characterize the gain of information.We show that the EE variations identify the features that are critical to recognize this specific sample,and the EE itself reveals the information distribution of the probabilities represented by the TN model.The signs of the variations further reveal the entanglement structures among the features.We test the validity of our scheme on a toy dataset of strip images,the MNIST dataset of hand-drawn digits,the fashion-MNIST dataset of the pictures of fashion articles,and the images of nerve cord.Our scheme opens the avenue to the quantum-inspired and interpreted unsupervised learning,which can be applied to,e.g.,image segmentation and object detection.

关 键 词：QUANTUM scheme TENSOR 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程] TP391.41[自动化与计算机技术—控制科学与工程]