Core Viewpoint - The article discusses the development of MemoryVLA, a cognitive-memory-action framework inspired by human memory systems, aimed at improving robotic manipulation tasks that require long-term temporal dependencies [3][7]. Group 1: Current Issues in VLA Models - Existing Vision-Language-Action (VLA) models primarily rely on current observations, leading to poor performance in long-term, temporally dependent tasks [2][7]. - Cognitive science indicates that humans utilize a memory system involving neural activity and the hippocampus to manage tasks effectively over time [7]. Group 2: MemoryVLA Framework - MemoryVLA is designed to create a memory system for robots, drawing inspiration from human cognitive mechanisms [3][7]. - The framework includes a pre-trained Vision-Language Model (VLM) that encodes observations into perceptual and cognitive tokens, which are stored in a Perceptual-Cognitive Memory Bank [3]. - Working memory retrieves relevant entries from the memory bank, merging them with current tokens to adaptively update the memory [3]. Group 3: Importance of Memory in Robotics - The article emphasizes the necessity of memory in robotic tasks, explaining that it enhances decision-making and action sequences in complex environments [3][7]. - A memory-conditioned diffusion action expert generates action sequences with temporal awareness using the tokens [3].

Core Viewpoint - The article discusses a study that reveals large language models (LLMs) do not possess human-like working memory, which is essential for coherent reasoning and conversation [5][30]. Summary by Sections Working Memory - Working memory in humans retains information for a short period, enabling reasoning and complex tasks [7]. - LLMs are often compared to a "talking brain," but the lack of working memory is a significant barrier to achieving true general artificial intelligence [8]. Evaluation of Working Memory - Traditional N-Back Task assessments are unsuitable for LLMs, as they can access all historical tokens rather than recalling internal memory [10]. Experiments Conducted - **Experiment 1: Number Guessing Game** - LLMs were asked to think of a number between 1-10 and respond to repeated guesses. Most models failed to provide a "yes" response, indicating a lack of internal memory [13][19]. - **Experiment 2: Yes-No Game** - LLMs were tasked with answering questions about a chosen object. Results showed that models began to contradict themselves after 20-40 questions, demonstrating inadequate working memory [22][26]. - **Experiment 3: Math Magic** - LLMs were required to remember and manipulate numbers through a series of calculations. The accuracy was low across models, with LLaMA-3.1-8B performing best [28][29]. Conclusions - None of the tested models passed all three experiments, indicating a significant gap in their ability to mimic human-like working memory [30]. - Future advancements in AI may require integrating a true working memory mechanism rather than relying solely on extended context windows [30].