2021年8月，圣达菲研究所举办了一个关于集体智力的研讨会，是智力项目基础的一部分。该项目旨在通过促进智能性质的跨学科研究来推进人工智能领域。该研讨会汇集了计算机科学家，生物学家，哲学家，社会科学家和其他人，以分享他们对多种代理人之间的互动产生的洞察力的见解 - 是否这些代理商是机器，动物或人类。在本报告中，我们总结了每个会谈和随后的讨论。我们还借出了许多关键主题，并确定未来研究的重要前沿。

The number of international benchmarking competitions is steadily increasing in various fields of machine learning (ML) research and practice. So far, however, little is known about the common practice as well as bottlenecks faced by the community in tackling the research questions posed. To shed light on the status quo of algorithm development in the specific field of biomedical imaging analysis, we designed an international survey that was issued to all participants of challenges conducted in conjunction with the IEEE ISBI 2021 and MICCAI 2021 conferences (80 competitions in total). The survey covered participants' expertise and working environments, their chosen strategies, as well as algorithm characteristics. A median of 72% challenge participants took part in the survey. According to our results, knowledge exchange was the primary incentive (70%) for participation, while the reception of prize money played only a minor role (16%). While a median of 80 working hours was spent on method development, a large portion of participants stated that they did not have enough time for method development (32%). 25% perceived the infrastructure to be a bottleneck. Overall, 94% of all solutions were deep learning-based. Of these, 84% were based on standard architectures. 43% of the respondents reported that the data samples (e.g., images) were too large to be processed at once. This was most commonly addressed by patch-based training (69%), downsampling (37%), and solving 3D analysis tasks as a series of 2D tasks. K-fold cross-validation on the training set was performed by only 37% of the participants and only 50% of the participants performed ensembling based on multiple identical models (61%) or heterogeneous models (39%). 48% of the respondents applied postprocessing steps.

The application of Natural Language Processing (NLP) to specialized domains, such as the law, has recently received a surge of interest. As many legal services rely on processing and analyzing large collections of documents, automating such tasks with NLP tools emerges as a key challenge. Many popular language models, such as BERT or RoBERTa, are general-purpose models, which have limitations on processing specialized legal terminology and syntax. In addition, legal documents may contain specialized vocabulary from other domains, such as medical terminology in personal injury text. Here, we propose LegalRelectra, a legal-domain language model that is trained on mixed-domain legal and medical corpora. We show that our model improves over general-domain and single-domain medical and legal language models when processing mixed-domain (personal injury) text. Our training architecture implements the Electra framework, but utilizes Reformer instead of BERT for its generator and discriminator. We show that this improves the model's performance on processing long passages and results in better long-range text comprehension.

Much recent work in task-oriented parsing has focused on finding a middle ground between flat slots and intents, which are inexpressive but easy to annotate, and powerful representations such as the lambda calculus, which are expressive but costly to annotate. This paper continues the exploration of task-oriented parsing by introducing a new dataset for parsing pizza and drink orders, whose semantics cannot be captured by flat slots and intents. We perform an extensive evaluation of deep-learning techniques for task-oriented parsing on this dataset, including different flavors of seq2seq systems and RNNGs. The dataset comes in two main versions, one in a recently introduced utterance-level hierarchical notation that we call TOP, and one whose targets are executable representations (EXR). We demonstrate empirically that training the parser to directly generate EXR notation not only solves the problem of entity resolution in one fell swoop and overcomes a number of expressive limitations of TOP notation, but also results in significantly greater parsing accuracy.

A classical result in learning theory shows the equivalence of PAC learnability of binary hypothesis classes and the finiteness of VC dimension. Extending this to the multiclass setting was an open problem, which was settled in a recent breakthrough result characterizing multiclass PAC learnability via the DS dimension introduced earlier by Daniely and Shalev-Shwartz. In this work we consider list PAC learning where the goal is to output a list of $k$ predictions. List learning algorithms have been developed in several settings before and indeed, list learning played an important role in the recent characterization of multiclass learnability. In this work we ask: when is it possible to $k$-list learn a hypothesis class? We completely characterize $k$-list learnability in terms of a generalization of DS dimension that we call the $k$-DS dimension. Generalizing the recent characterization of multiclass learnability, we show that a hypothesis class is $k$-list learnable if and only if the $k$-DS dimension is finite.

从教育和研究的角度来看，关于硬件的实验是机器人技术和控制的关键方面。在过去的十年中，已经介绍了许多用于车轮机器人的开源硬件和软件框架，主要采用独轮车和类似汽车的机器人的形式，目的是使更广泛的受众访问机器人并支持控制系统开发。独轮车通常很小且便宜，因此有助于在较大的机队中进行实验，但它们不适合高速运动。类似汽车的机器人更敏捷，但通常更大且更昂贵，因此需要更多的空间和金钱资源。为了弥合这一差距，我们介绍了Chronos，这是一种具有定制开源电子设备的新型汽车的1/28比例机器人，以及CRS是用于控制和机器人技术的开源软件框架。 CRS软件框架包括实施各种最新的算法，以进行控制，估计和多机构协调。通过这项工作，我们旨在更轻松地使用硬件，并减少启动新的教育和研究项目所需的工程时间。

基础模型在AI的所有应用中都被认为是一个突破性的突破性，有望进行功能提取的可重复使用的机制，从而减轻了对特定于任务的预测模型的大量高质量培训数据的需求。但是，基础模型可能可能编码甚至加强历史数据集中存在的现有偏见。鉴于仔细检查基础模型的能力有限，尚不清楚机会是否超过了临床决策等安全关键应用中的风险。在我们对最近发布且可公开可用的胸部X射线基础模型的统计偏差分析中，我们发现了关注的原因，因为该模型似乎编码了受保护特征，包括生物学性别和种族认同，这可能会导致下游亚组的各个子群体不同申请。尽管针对医疗保健应用的基础模型的研究处于早期阶段，但我们认为，让社区意识到这些风险以避免伤害很重要。

在过去几年中，自动化机器学习（AUTOML）工具的普及有所增加。机器学习（ML）从业人员使用自动工具来自动化和优化功能工程，模型培训和超参数优化的过程。最近的工作对从业人员使用汽车工具的经验进行了定性研究，并根据其性能和提供的功能比较了不同的汽车工具，但是现有的工作都没有研究在大规模实际项目中使用Automl工具的实践。因此，我们进行了一项实证研究，以了解ML从业者如何在其项目中使用汽车工具。为此，我们在GitHub上托管的大量开源项目存储库中研究了最常用的十大汽车工具及其各自的用法。我们研究的结果表明1）ML从业人员主要使用哪种汽车工具，以及2）使用这些汽车工具的存储库的特征。此外，我们确定了使用Automl工具的目的（例如，模型参数采样，搜索空间管理，模型评估/错误分析，数据/功能转换和数据标记）以及ML管道的阶段（例如功能工程）使用工具。最后，我们报告在同一源代码文件中使用Automl工具的频率。我们希望我们的结果可以帮助ML从业人员了解不同的汽车工具及其使用情况，以便他们可以为其目的选择正确的工具。此外，Automl工具开发人员可以从我们的发现中受益，以深入了解其工具的用法并改善其工具以更好地适合用户的用法和需求。

我们提出了Blenderbot 3，这是一个175B参数对话模型，能够通过访问Internet和长期内存进行开放域对话，并接受了大量用户定义的任务的培训。我们同时发布了模型权重和代码，还将模型部署在公共网页上，以与有机用户进行交互。该技术报告描述了该模型的构建方式（建筑，模型和培训计划）以及其部署的细节，包括安全机制。人类评估表明，它优于现有的开放域对话代理，包括其前身（Roller等，2021； Komeili等，2022）。最后，我们使用部署收集的数据详细介绍了持续学习的计划，该数据也将公开发布。因此，该研究计划的目标是使社区能够研究通过互动学习的不断改进的负责任的代理商。

机器学习模型的预测失败通常来自训练数据中的缺陷，例如不正确的标签，离群值和选择偏见。但是，这些负责给定失败模式的数据点通常不知道先验，更不用说修复故障的机制了。这项工作借鉴了贝叶斯对持续学习的看法，并为两者开发了一个通用框架，确定了导致目标失败的培训示例，并通过删除有关它们的信息来修复模型。该框架自然允许将最近学习的最新进展解决这一新的模型维修问题，同时将现有的作品集成了影响功能和数据删除作为特定实例。在实验上，提出的方法优于基准，既可以识别有害训练数据，又要以可普遍的方式固定模型失败。