Background: Encouraged by the success of pretrained Transformer models in many natural language processing tasks, their use for International Classification of Diseases (ICD) coding tasks is now actively being explored. In this study, we investigate three types of Transformer-based models, aiming to address the extreme label set and long text classification challenges that are posed by automated ICD coding tasks. Methods: The Transformer-based model PLM-ICD achieved the current state-of-the-art (SOTA) performance on the ICD coding benchmark dataset MIMIC-III. It was chosen as our baseline model to be further optimised. XR-Transformer, the new SOTA model in the general extreme multi-label text classification domain, and XR-LAT, a novel adaptation of the XR-Transformer model, were also trained on the MIMIC-III dataset. XR-LAT is a recursively trained model chain on a predefined hierarchical code tree with label-wise attention, knowledge transferring and dynamic negative sampling mechanisms. Results: Our optimised PLM-ICD model, which was trained with longer total and chunk sequence lengths, significantly outperformed the current SOTA PLM-ICD model, and achieved the highest micro-F1 score of 60.8%. The XR-Transformer model, although SOTA in the general domain, did not perform well across all metrics. The best XR-LAT based model obtained results that were competitive with the current SOTA PLM-ICD model, including improving the macro-AUC by 2.1%. Conclusion: Our optimised PLM-ICD model is the new SOTA model for automated ICD coding on the MIMIC-III dataset, while our novel XR-LAT model performs competitively with the previous SOTA PLM-ICD model.
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Large language models (LLMs) have been shown to be able to perform new tasks based on a few demonstrations or natural language instructions. While these capabilities have led to widespread adoption, most LLMs are developed by resource-rich organizations and are frequently kept from the public. As a step towards democratizing this powerful technology, we present BLOOM, a 176B-parameter open-access language model designed and built thanks to a collaboration of hundreds of researchers. BLOOM is a decoder-only Transformer language model that was trained on the ROOTS corpus, a dataset comprising hundreds of sources in 46 natural and 13 programming languages (59 in total). We find that BLOOM achieves competitive performance on a wide variety of benchmarks, with stronger results after undergoing multitask prompted finetuning. To facilitate future research and applications using LLMs, we publicly release our models and code under the Responsible AI License.
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抗微生物抗性(AMR)是日益增长的公共卫生威胁,估计每年造成超过1000万人死亡,在现状预测下,到2050年,全球经济损失了100万亿美元。这些损失主要是由于治疗失败的发病率和死亡率增加,医疗程序中的AMR感染以及归因于AMR的生活质量损失所致。已经提出了许多干预措施来控制AMR的发展并减轻其传播带来的风险。本文回顾了细菌AMR管理和控制的关键方面,这些方面可以利用人工智能,机器学习以及数学和统计建模等数据技术,这些领域在本世纪已经快速发展。尽管数据技术已成为生物医学研究的组成部分,但它们对AMR管理的影响仍然很小。我们概述了使用数据技术来打击AMR,详细介绍了四个互补类别的最新进展:监视,预防,诊断和治疗。我们在生物医学研究,临床实践和“一个健康”背景下使用数据技术提供了有关当前AMR控制方法的概述。我们讨论了数据技术的潜在影响和挑战在高收入和中等收入国家中面临的实施,并建议将这些技术更容易地整合到医疗保健和公共卫生中所需的具体行动,并建议使用具体的行动部门。
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交叉设备联合学习(FL)是一种分布式学习范例,具有几种挑战,这些挑战将其区分离为传统的分布式学习,每个设备上的系统特征的可变性,以及数百万客户端与主要服务器协调。文献中描述的大多数FL系统是同步的 - 它们从各个客户端执行模型更新的同步聚合。缩放同步FL是挑战,因为增加了并行培训的客户数量导致训练速度的回报递减,类似于大批培训。而且,陷阱妨碍了同步流动训练。在这项工作中,我们概述了一种生产异步流行系统设计。我们的工作解决了上述问题,一些系统设计挑战及其解决方案的草图,并触及了为数百万客户建立生产流系统的原则。凭经验,我们证明异步流量在跨越近一亿台设备时比同步液更快地收敛。特别地,在高并发设置中,异步FL速度快5倍,并且具有比同步FL更小的通信开销差距。
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我们研究了覆盖的阶段 - 避免多个代理的动态游戏,其中多个代理相互作用,并且每种希望满足不同的目标条件,同时避免失败状态。 Reach-避免游戏通常用于表达移动机器人运动计划中发现的安全关键最优控制问题。虽然这些运动计划问题存在各种方法,但我们专注于找到时间一致的解决方案,其中计划未来的运动仍然是最佳的,尽管先前的次优行动。虽然摘要,时间一致性封装了一个非常理想的财产:即使机器人早期从计划发出的机器人的运动发散,即,由于例如内在的动态不确定性或外在环境干扰,即使机器人的运动分歧,时间一致的运动计划也保持最佳。我们的主要贡献是一种计算 - 避免多种代理的算法算法,避免呈现时间一致的解决方案。我们展示了我们在两位和三位玩家模拟驾驶场景中的方法,其中我们的方法为所有代理商提供了安全控制策略。
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电子医疗记录(EMRS)包含对医学研究人员具有巨大潜在价值的临床叙述文本。但是,将该信息与个人身份信息(PII)混合,这会给患者和临床医生机密的风险带来风险。本文介绍了端到端的去除识别框架,以自动从医院排放摘要中删除PII。我们的语料库包括600名医院出院摘要,该摘要是从澳大利亚悉尼的两家主要推荐医院的EMRS中提取的。我们的端到端去识别框架由三个组件组成:1)注释:使用五个预定类别的600家医院放电摘要标记PII:人,地址,出生日期,识别号码,电话号码; 2)建模:培训六个命名实体识别(NER)深度学习基础 - 平衡和不平衡数据集;并评估组合所有六种基础型号的合奏,这三种基础模型,具有最佳的F1分数和三种基础型号,分别使用令牌级多数投票和堆叠方法分别具有最佳的召回分数; 3)去鉴定:从医院排放摘要中移除PII。我们的研究结果表明,使用堆叠支持向量机(SVM)方法在三种基础上使用最佳F1分数的堆栈模型实现了优异的结果,在我们的语料库的测试组上的F1得分为99.16%。我们还评估了2014年I2B2去识别数据集上的建模组件的稳健性。我们在所有六种基础型号上使用令牌级多数投票方法的集合模型,在严格的实体匹配中实现了96.24%的最高F1得分,并且在二进制令牌级匹配中的最高F1得分为98.64%,而二进制符合两个州-Of-最现实的方法。该框架提供了一种强大的解决方案,可以安全地去识别临床叙述文本。
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在本文中,我们研究了平稳的随机多级组成优化问题,其中目标函数是$ T $函数的嵌套组成。我们假设通过随机的一阶Oracle访问函数及其渐变的噪声评估。为了解决这类问题,我们提出了两个使用移动平均随机估计的两种算法,并分析了它们对问题的$ \ epsilon $ -stationary的趋同。我们表明,第一算法,它是\ Cite {gharuswan20}的泛化到$ t $ letch案例,可以通过使用mini-实现$ \ mathcal {o}(1 / \ epsilon ^ 6)$的样本复杂性每次迭代中的样品批次。通过使用函数值的线性化随机估计修改该算法,我们将样本复杂性提高到$ \ mathcal {o}(1 / \ epsilon ^ 4)$。 {\ Color {Black}此修改不仅可以消除在每次迭代中具有迷你样本的要求,还使算法无参数和易于实现}。据我们所知,这是第一次为(UN)约束的多级设置设计的在线算法,在标准假设下获得平滑单级设置的相同样本复杂度(无偏见和界限第二矩)在随机第一阶Oracle上。
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Here, we demonstrate how machine learning enables the prediction of comonomers reactivity ratios based on the molecular structure of monomers. We combined multi-task learning, multi-inputs, and Graph Attention Network to build a model capable of predicting reactivity ratios based on the monomers chemical structures.
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Modern deep neural networks have achieved superhuman performance in tasks from image classification to game play. Surprisingly, these various complex systems with massive amounts of parameters exhibit the same remarkable structural properties in their last-layer features and classifiers across canonical datasets. This phenomenon is known as "Neural Collapse," and it was discovered empirically by Papyan et al. \cite{Papyan20}. Recent papers have theoretically shown the global solutions to the training network problem under a simplified "unconstrained feature model" exhibiting this phenomenon. We take a step further and prove the Neural Collapse occurrence for deep linear network for the popular mean squared error (MSE) and cross entropy (CE) loss. Furthermore, we extend our research to imbalanced data for MSE loss and present the first geometric analysis for Neural Collapse under this setting.
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Machine Reading Comprehension has become one of the most advanced and popular research topics in the fields of Natural Language Processing in recent years. The classification of answerability questions is a relatively significant sub-task in machine reading comprehension; however, there haven't been many studies. Retro-Reader is one of the studies that has solved this problem effectively. However, the encoders of most traditional machine reading comprehension models in general and Retro-Reader, in particular, have not been able to exploit the contextual semantic information of the context completely. Inspired by SemBERT, we use semantic role labels from the SRL task to add semantics to pre-trained language models such as mBERT, XLM-R, PhoBERT. This experiment was conducted to compare the influence of semantics on the classification of answerability for the Vietnamese machine reading comprehension. Additionally, we hope this experiment will enhance the encoder for the Retro-Reader model's Sketchy Reading Module. The improved Retro-Reader model's encoder with semantics was first applied to the Vietnamese Machine Reading Comprehension task and obtained positive results.
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