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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Self-supervised monocular depth estimation (MDE) models universally suffer from the notorious edge-fattening issue. Triplet loss, as a widespread metric learning strategy, has largely succeeded in many computer vision applications. In this paper, we redesign the patch-based triplet loss in MDE to alleviate the ubiquitous edge-fattening issue. We show two drawbacks of the raw triplet loss in MDE and demonstrate our problem-driven redesigns. First, we present a min. operator based strategy applied to all negative samples, to prevent well-performing negatives sheltering the error of edge-fattening negatives. Second, we split the anchor-positive distance and anchor-negative distance from within the original triplet, which directly optimizes the positives without any mutual effect with the negatives. Extensive experiments show the combination of these two small redesigns can achieve unprecedented results: Our powerful and versatile triplet loss not only makes our model outperform all previous SoTA by a large margin, but also provides substantial performance boosts to a large number of existing models, while introducing no extra inference computation at all.
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我们为文本对图像生成引入了一种内存驱动的半参数方法,该方法基于参数和非参数技术。非参数组件是由训练集构建的图像特征的记忆库。参数组件是生成对抗网络。给定在推理时间进行新的文本描述,内存库用于选择性检索作为目标图像的基本信息提供的图像功能,从而使生成器能够产生逼真的合成结果。我们还将内容信息与语义功能一起纳入歧视器中,从而使歧视者可以做出更可靠的预测。实验结果表明,所提出的记忆驱动的半参数方法比视觉忠诚度和文本图像语义一致性都比纯粹的参数方法产生更现实的图像。
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数据增强是自然语言处理(NLP)模型的鲁棒性评估的重要组成部分,以及增强他们培训的数据的多样性。在本文中,我们呈现NL-Cogmenter,这是一种新的参与式Python的自然语言增强框架,它支持创建两个转换(对数据的修改)和过滤器(根据特定功能的数据拆分)。我们描述了框架和初始的117个变换和23个过滤器,用于各种自然语言任务。我们通过使用其几个转换来分析流行自然语言模型的鲁棒性来证明NL-Upmenter的功效。基础架构,Datacards和稳健性分析结果在NL-Augmenter存储库上公开可用(\ url {https://github.com/gem-benchmark/nl-augmenter})。
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外科模拟器不仅允许规划和培训复杂的程序,而且还提供了为算法开发产生结构化数据的能力,这可以应用于图像引导的计算机辅助干预措施。虽然在外科医生或数据生成引擎的发展培训平台上,但我们知识的这两个功能尚未一起提供。我们展示了我们的开发成本效益和协同框架,命名为异步多体框架加(AMBF +),它与练习其外科技能的用户同时生成下游算法开发的数据。 AMBF +在虚拟现实(VR)设备上提供立体显示器,并触觉外科仿真的触觉反馈。它还可以生成不同的数据,例如对象姿势和分段图。 AMBF +采用柔性插件设置设计,可允许仿真仿真不同外科手术。我们将AMBF +的一个用例显示为虚拟钻探模拟器,用于横向颅底手术,用户可以使用虚拟手术钻积极地修改患者解剖结构。我们进一步演示如何生成的数据可用于验证和培训下游计算机视觉算法
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Reading comprehension of legal text can be a particularly challenging task due to the length and complexity of legal clauses and a shortage of expert-annotated datasets. To address this challenge, we introduce the Merger Agreement Understanding Dataset (MAUD), an expert-annotated reading comprehension dataset based on the American Bar Association's 2021 Public Target Deal Points Study, with over 39,000 examples and over 47,000 total annotations. Our fine-tuned Transformer baselines show promising results, with models performing well above random on most questions. However, on a large subset of questions, there is still room for significant improvement. As the only expert-annotated merger agreement dataset, MAUD is valuable as a benchmark for both the legal profession and the NLP community.
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Objective: Imbalances of the electrolyte concentration levels in the body can lead to catastrophic consequences, but accurate and accessible measurements could improve patient outcomes. While blood tests provide accurate measurements, they are invasive and the laboratory analysis can be slow or inaccessible. In contrast, an electrocardiogram (ECG) is a widely adopted tool which is quick and simple to acquire. However, the problem of estimating continuous electrolyte concentrations directly from ECGs is not well-studied. We therefore investigate if regression methods can be used for accurate ECG-based prediction of electrolyte concentrations. Methods: We explore the use of deep neural networks (DNNs) for this task. We analyze the regression performance across four electrolytes, utilizing a novel dataset containing over 290000 ECGs. For improved understanding, we also study the full spectrum from continuous predictions to binary classification of extreme concentration levels. To enhance clinical usefulness, we finally extend to a probabilistic regression approach and evaluate different uncertainty estimates. Results: We find that the performance varies significantly between different electrolytes, which is clinically justified in the interplay of electrolytes and their manifestation in the ECG. We also compare the regression accuracy with that of traditional machine learning models, demonstrating superior performance of DNNs. Conclusion: Discretization can lead to good classification performance, but does not help solve the original problem of predicting continuous concentration levels. While probabilistic regression demonstrates potential practical usefulness, the uncertainty estimates are not particularly well-calibrated. Significance: Our study is a first step towards accurate and reliable ECG-based prediction of electrolyte concentration levels.
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Purpose: Trans-oral robotic surgery (TORS) using the da Vinci surgical robot is a new minimally-invasive surgery method to treat oropharyngeal tumors, but it is a challenging operation. Augmented reality (AR) based on intra-operative ultrasound (US) has the potential to enhance the visualization of the anatomy and cancerous tumors to provide additional tools for decision-making in surgery. Methods: We propose and carry out preliminary evaluations of a US-guided AR system for TORS, with the transducer placed on the neck for a transcervical view. Firstly, we perform a novel MRI-transcervical 3D US registration study. Secondly, we develop a US-robot calibration method with an optical tracker and an AR system to display the anatomy mesh model in the real-time endoscope images inside the surgeon console. Results: Our AR system reaches a mean projection error of 26.81 and 27.85 pixels for the projection from the US to stereo cameras in a water bath experiment. The average target registration error for MRI to 3D US is 8.90 mm for the 3D US transducer and 5.85 mm for freehand 3D US, and the average distance between the vessel centerlines is 2.32 mm. Conclusion: We demonstrate the first proof-of-concept transcervical US-guided AR system for TORS and the feasibility of trans-cervical 3D US-MRI registration. Our results show that trans-cervical 3D US is a promising technique for TORS image guidance.
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该文档概述了Prospero预先注册的方案,用于对口腔或口腔或肉桂癌治疗后语音变化的系统审查进行系统审查。口腔中肿瘤的治疗可能会导致生理变化,这可能导致发音困难。由于疤痕组织和/或潜在的(术后)放射治疗,舌头变得不那么流动。此外,组织损失可能会为气流或极限收缩可能性创造旁路。为了更好地了解语音问题的性质,需要有关枢纽运动的信息,因为感知信息或声学信息仅提供了间接的关节变化证据。因此,这项系统的综述将回顾研究,该研究直接测量口腔或口咽癌治疗后舌,下巴和嘴唇的关节运动。
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骨肉瘤是最常见的原发性骨癌,其标准治疗包括术前化疗,然后切除。化学疗法反应用于预测患者的预后和进一步治疗。坏死在切除标本上的组织学幻灯片通常评估了坏死比定义为坏死肿瘤与总体肿瘤之比。已知坏死比> = 90%的患者的预后更好。多个载玻片对坏死比的手动微观综述是半定量性的,并且可能具有观察者间和观察者间的变异性。我们提出了一种基于目标和可再现的深度学习方法,以估计坏死比,并从扫描的苏木精和曙红全幻灯片图像预测结果。我们以3134个WSI的速度收集了103例骨肉瘤病例,以训练我们的深度学习模型,验证坏死比评估并评估结果预测。我们训练了深层多磁化网络,以分割多个组织亚型,包括生存的肿瘤和像素级中的坏死肿瘤,并计算来自多个WSI的病例级坏死比。我们显示了通过分割模型估算的坏死比,高度与由专家手动评估的病理报告中的坏死比高度相关,其中IV级的平均绝对差异(100%),III(> = 90%)和II(> = 50%和<50%和< 90%)坏死反应分别为4.4%,4.5%和17.8%。我们成功地对患者进行了分层,以预测P = 10^-6的总生存率,而P = 0.012的无进展生存率。我们没有可变性的可重现方法使我们能够调整截止阈值,特别是用于模型和数据集的截止阈值,为OS的80%,PFS为60%。我们的研究表明,深度学习可以支持病理学家作为一种客观的工具,可以分析组织学中骨肉瘤,以评估治疗反应并预测患者结果。
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