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World's smallest possum may be hiding in South Australia
Environment Animals Wildlife World's smallest possum may be hiding in South Australia The tiny mammal weighs less than one pound. Breakthroughs, discoveries, and DIY tips sent six days a week. Weighing less than one pound, the little pygmy possum () is one of the smallest mammals in Australia. These miniscule mammals feed on nectar, pollen, and insects, and differ from opossums . Opossums live in the United States and parts of Canada and have a bare tail instead of a furry tail.
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Plastic-free soy sauce container biodegrades in 4 weeks
The biodegradable design could help keep plastic from becoming fish food. Breakthroughs, discoveries, and DIY tips sent every weekday. Chances are sushi aficionados have left a restaurant take-out in tow and with a handful of adorable, but environmentally problematic, fish-shaped soy sauce packets. These single-use plastic " shoyu-tai " drip bottles are as iconic as they are convenient, but their small size and disposability mean they often end up sliding down sinks and into drains. Once in the big blue, they slowly break down into microplastics that are then eaten by fish .
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Refine Medical Diagnosis Using Generation Augmented Retrieval and Clinical Practice Guidelines
Li, Wenhao, Zhang, Hongkuan, Zhang, Hongwei, Li, Zhengxu, Dong, Zengjie, Chen, Yafan, Bidargaddi, Niranjan, Liu, Hong
-- Current medical language models, adapted from large language models (LLMs), typically predict ICD code - based diagnosis from electronic health records (EHRs) because these labels are readily available. However, ICD codes do not capture the nuanced, context - rich reasoning clinicians use for diagnosis. Clinicians synthesize diverse patient data and reference clinical practice guidelines (CPGs) to make evidence - based decisions. This misalignment limits the clinical utility of existing models. We introduce GARMLE - G, a Generation - Augmented Retrieval framework that grounds medical language model outp uts in authoritative CPGs. Unlike conventional Retrieval - Augmented Generation based approaches, GARMLE - G enables hallucination - free outputs by directly retrieving authoritative guideline content without relying on model - generated text. It (1) integrates LLM predictions with EHR data to create semantically rich queries, (2) retrieves relevant CPG knowledge snippets via embedding similarity, and (3) fuses guideline content with model output to generate clinically aligned recommendations. A prototype system for hypertension diagnosis was developed and evaluated on multiple metrics, demonstrating superior retrieval precision, semantic relevance, and clinical guideline adherence compared to RAG - based baselines, while maintaining a lightweight architecture suitable for localized healthcare deployment. This work provides a scalable, low - cost, and hallucination - free method for grounding medical language models in evidence - based clinical practice, with strong potential for broader clinical deployment. The research reported in this paper is financially supported by the National Natural Science Foundation of China (62276156), the project of Shandong Provincial Natural Science Foundation (ZR2024LZH005), the Taishan Scholar Program of Shandong Province of China (No.tsq nz20240809), and the Excellent Youth Foundation of Shandong Natural Science Foundation (2024HWYQ - 055). Wenhao Li is with Shandong Normal University, Jinan, China, 250358 (email: lwh@sdnu.edu.cn) Hongkuan Zhang is with Shandong Normal University, Jinan, China, 250358 (email: 2024217028@stu.sdnu.edu.cn) In the healthcare sector, language models and related tools, such as ChatGPT and ClinicalBERT, have been increasingly applied across multiple scenarios, including disease prediction, clinical decision support, patient interaction, drug discovery, and personalized medicine, significantly driving innovation and transformation in medical technology [1, 2] . As a fundamental task in healthcare, disease diagnosis refers to the process by which health professionals identify the most likely disease or disorder causing a patient's symptoms [3] .
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Scaling Internal-State Policy-Gradient Methods for POMDPs
Aberdeen, Douglas, Baxter, Jonathan
Policy-gradient methods have received increased attention recently as a mechanism for learning to act in partially observable environments. They have shown promise for problems admitting memoryless policies but have been less successful when memory is required. In this paper we develop several improved algorithms for learning policies with memory in an infinite-horizon setting -- directly when a known model of the environment is available, and via simulation otherwise. We compare these algorithms on some large POMDPs, including noisy robot navigation and multi-agent problems.
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NAS-LoRA: Empowering Parameter-Efficient Fine-Tuning for Visual Foundation Models with Searchable Adaptation
Chen, Renqi, Su, Haoyang, Tang, Shixiang
The Segment Anything Model (SAM) has emerged as a powerful visual foundation model for image segmentation. However, adapting SAM to specific downstream tasks, such as medical and agricultural imaging, remains a significant challenge. To address this, Low-Rank Adaptation (LoRA) and its variants have been widely employed to enhancing SAM's adaptation performance on diverse domains. Despite advancements, a critical question arises: can we integrate inductive bias into the model? This is particularly relevant since the Transformer encoder in SAM inherently lacks spatial priors within image patches, potentially hindering the acquisition of high-level semantic information. In this paper, we propose NAS-LoRA, a new Parameter-Efficient Fine-Tuning (PEFT) method designed to bridge the semantic gap between pre-trained SAM and specialized domains. Specifically, NAS-LoRA incorporates a lightweight Neural Architecture Search (NAS) block between the encoder and decoder components of LoRA to dynamically optimize the prior knowledge integrated into weight updates. Furthermore, we propose a stage-wise optimization strategy to help the ViT encoder balance weight updates and architectural adjustments, facilitating the gradual learning of high-level semantic information. V arious Experiments demonstrate our NAS-LoRA improves existing PEFT methods, while reducing training cost by 24.14% without increasing inference cost, highlighting the potential of NAS in enhancing PEFT for visual foundation models.
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