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Memristive Explainable Artificial Intelligence Hardware

Artificial intelligence (AI) is often considered a black box because it provides optimal answers without clear insight into its decision‐making process. To address this black box problem, explainable artificial intelligence… Click to show full abstract

Artificial intelligence (AI) is often considered a black box because it provides optimal answers without clear insight into its decision‐making process. To address this black box problem, explainable artificial intelligence (XAI) has emerged, which provides an explanation and interpretation of its decisions, thereby promoting the trustworthiness of AI systems. Here, a memristive XAI hardware framework is presented. This framework incorporates three distinct types of memristors (Mott memristor, valence change memristor, and charge trap memristor), each responsible for performing three essential functions (perturbation, analog multiplication, and integration) required for the XAI hardware implementation. Three memristor arrays with high robustness are fabricated and the image recognition of 3 × 3 testing patterns and their explanation map generation are experimentally demonstrated. Then, a software‐based extended system based on the characteristics of this hardware is built, simulating a large‐scale image recognition task. The proposed system can perform the XAI operations with only 4.32% of the energy compared to conventional digital systems, enlightening its strong potential for the XAI accelerator.

Keywords: memristor; hardware; xai; artificial intelligence; explainable artificial

Journal Title: Advanced Materials
Year Published: 2024

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