Histopathology imaging is crucial for the diagnosis and treatment of skin diseases. For this reason, computer-assisted approaches have gained popularity and shown promising results in tasks such as segmentation and classification of skin disorders. However, collecting essential data and sufficiently high-quality annotations is a challenge. This work describes a pipeline that uses suspected melanoma samples that have been characterized using Multi-Epitope-Ligand Cartography (MELC). This cellular-level tissue characterisation is then represented as a graph and used to train a graph neural network. This imaging technology, combined with the methodology proposed in this work, achieves a classification accuracy of 87%, outperforming existing approaches by 10%.
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We consider a sequential decision making task where we are not allowed to evaluate parameters that violate an a priori unknown (safety) constraint. A common approach is to place a Gaussian process prior on the unknown constraint and allow evaluations only in regions that are safe with high probability. Most current methods rely on a discretization of the domain and cannot be directly extended to the continuous case. Moreover, the way in which they exploit regularity assumptions about the constraint introduces an additional critical hyperparameter. In this paper, we propose an information-theoretic safe exploration criterion that directly exploits the GP posterior to identify the most informative safe parameters to evaluate. Our approach is naturally applicable to continuous domains and does not require additional hyperparameters. We theoretically analyze the method and show that we do not violate the safety constraint with high probability and that we explore by learning about the constraint up to arbitrary precision. Empirical evaluations demonstrate improved data-efficiency and scalability.
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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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The library scikit-fda is a Python package for Functional Data Analysis (FDA). It provides a comprehensive set of tools for representation, preprocessing, and exploratory analysis of functional data. The library is built upon and integrated in Python's scientific ecosystem. In particular, it conforms to the scikit-learn application programming interface so as to take advantage of the functionality for machine learning provided by this package: pipelines, model selection, and hyperparameter tuning, among others. The scikit-fda package has been released as free and open-source software under a 3-Clause BSD license and is open to contributions from the FDA community. The library's extensive documentation includes step-by-step tutorials and detailed examples of use.
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安全可靠的自主驾驶堆栈(AD)的设计是我们时代最具挑战性的任务之一。预计这些广告将在具有完全自主权的高度动态环境中驱动,并且比人类更大的可靠性。从这个意义上讲,要高效,安全地浏览任意复杂的流量情景,广告必须具有预测周围参与者的未来轨迹的能力。当前的最新模型通常基于复发,图形和卷积网络,在车辆预测的背景下取得了明显的结果。在本文中,我们探讨了在生成模型进行运动预测中注意力的影响,考虑到物理和社会环境以计算最合理的轨迹。我们首先使用LSTM网络对过去的轨迹进行编码,该网络是计算社会背景的多头自我发言模块的输入。另一方面,我们制定了一个加权插值来计算最后一个观测框中的速度和方向,以便计算可接受的目标点,从HDMAP信息的可驱动的HDMAP信息中提取,这代表了我们的物理环境。最后,我们的发电机的输入是从多元正态分布采样的白噪声矢量,而社会和物理环境则是其条件,以预测可行的轨迹。我们使用Argoverse运动预测基准1.1验证我们的方法,从而实现竞争性的单峰结果。
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可以部署一组合作的空中机器人,以有效地巡逻地形,每个机器人都会在指定区域飞行,并定期与邻居共享信息,以保护或监督它。为了确保鲁棒性,以前对这些同步系统的作品提出了将机器人发送到相邻区域的情况,以防它检测到故障。为了处理不可预测性并提高确定性巡逻计划的效率,本文提出了随机策略,以涵盖在代理之间分配的领域。首先,在本文中针对两个指标进行了对随机过程的理论研究:\ emph {闲置时间},这是两个连续观察到地形的任何点和\ emph {隔离时间}之间的预期时间,预期的时间},预期的时间机器人没有与任何其他机器人通信的时间。之后,将随机策略与添加另一个指标的确定性策略进行了比较:\ emph {广播时间},从机器人发出消息的那一刻,直到团队的所有其他机器人收到消息。模拟表明,理论结果与模拟和随机策略的表现非常吻合,其行为与文献中提出的确定性协议获得的行为相比。
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语言模型既展示了定量的改进,又展示了新的定性功能,随着规模的增加。尽管它们具有潜在的变革性影响,但这些新能力的特征却很差。为了为未来的研究提供信息,为破坏性的新模型能力做准备,并改善社会有害的效果,至关重要的是,我们必须了解目前和近乎未来的能力和语言模型的局限性。为了应对这一挑战,我们介绍了超越模仿游戏基准(Big Bench)。 Big Bench目前由204个任务组成,由132家机构的442位作者贡献。任务主题是多样的,从语言学,儿童发展,数学,常识性推理,生物学,物理学,社会偏见,软件开发等等。 Big-Bench专注于被认为超出当前语言模型的功能的任务。我们评估了OpenAI的GPT型号,Google内部密集变压器体系结构和大型基础上的开关稀疏变压器的行为,跨越了数百万到数十亿个参数。此外,一个人类专家评估者团队执行了所有任务,以提供强大的基准。研究结果包括:模型性能和校准都随规模改善,但绝对的术语(以及与评估者的性能相比);在模型类中的性能非常相似,尽管带有稀疏性。逐渐和预测的任务通常涉及大量知识或记忆成分,而在临界规模上表现出“突破性”行为的任务通常涉及多个步骤或组成部分或脆性指标;社交偏见通常会随着含糊不清的环境而随着规模而增加,但这可以通过提示来改善。
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我们为多层神经网络架构定义了一种不断微弱的完美学习算法的概念,并表明了这种算法不存在,条件是数据集的长度超过所涉及的参数的数量,并且激活功能是逻辑,坦希或罪。
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客户服务Chatbots是对话系统,旨在为客户提供有关不同公司提供的产品/服务的信息。特别地,意图识别是自然语言低估Chatbot系统的能力的核心组件之一。在聊天训练识别的不同意图中,他们有一组是通用的任何客户服务Chatbot。普遍意图可以包括称呼,将对话交给人类代理人,告别。识别这些普遍意图的系统将非常有助于优化特定客户服务聊天训练过程。我们提出了一个普遍意图识别系统的发展,该系统受过培训,以识别28个不同的聊天跳闸中常见的11个意图组。拟议的系统考虑了最先进的单词嵌入模型,例如Word2VEC和BERT,基于卷积和经常性神经网络的深层分类器。所提出的模型能够区分这些普遍意图,均衡精度高达80.4 \%。此外,所提出的系统同样准确地识别短期和长文本请求中表达的意图。同时,错误分类错误通常发生在具有非常相似的语义领域,例如告别和正面评论之间。建议的系统将非常有帮助优化客户服务Chatbot的培训过程,因为我们的系统已经可用并检测到一些意图。与此同时,拟议的方法将是一个合适的基础模型,通过应用转移学习策略培训更具体的聊天措施。
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近年来,空中机器人背景下的高速导航和环境互动已成为几个学术和工业研究研究的兴趣领域。特别是,由于其若干环境中的潜在可用性,因此搜索和拦截(SAI)应用程序造成引人注目的研究区域。尽管如此,SAI任务涉及有关感官权重,板载计算资源,致动设计和感知和控制算法的具有挑战性的发展。在这项工作中,已经提出了一种用于高速对象抓握的全自动空中机器人。作为一个额外的子任务,我们的系统能够自主地刺穿位于靠近表面的杆中的气球。我们的第一款贡献是在致动和感觉水平的致动和感觉水平的空中机器人的设计,包括具有额外传感器的新型夹具设计,使机器人能够高速抓住物体。第二种贡献是一种完整的软件框架,包括感知,状态估计,运动计划,运动控制和任务控制,以便快速且强大地执行自主掌握任务。我们的方法已在一个具有挑战性的国际竞争中验证,并显示出突出的结果,能够在室外环境中以6米/分来自动搜索,遵循和掌握移动物体
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