许多用户转向记录检索系统(例如搜索引擎)以寻求有争议的问题的答案。回答此类用户查询通常需要识别Web文档中的响应,并根据其不同的视角汇总响应。经典文档检索系统在为用户提供一系列直接和不同的响应时下降。当然,识别文档中的此类答复是一种自然语言理解任务。在本文中,我们研究了用文件检索综合这种语言理解目标的挑战,并研究了一个新的视角导向文档检索范式。我们讨论并评估内在的自然语言理解挑战,以实现目标。在设计挑战和原则之后,我们展示并评估了一个实用的原型管道系统。我们使用原型系统进行用户调查,以便评估我们的范例的效用,并理解用户信息需要有争议的查询。
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Remote sensing imagery provides comprehensive views of the Earth, where different sensors collect complementary data at different spatial scales. Large, pretrained models are commonly finetuned with imagery that is heavily augmented to mimic different conditions and scales, with the resulting models used for various tasks with imagery from a range of spatial scales. Such models overlook scale-specific information in the data. In this paper, we present Scale-MAE, a pretraining method that explicitly learns relationships between data at different, known scales throughout the pretraining process. Scale-MAE pretrains a network by masking an input image at a known input scale, where the area of the Earth covered by the image determines the scale of the ViT positional encoding, not the image resolution. Scale-MAE encodes the masked image with a standard ViT backbone, and then decodes the masked image through a bandpass filter to reconstruct low/high frequency images at lower/higher scales. We find that tasking the network with reconstructing both low/high frequency images leads to robust multiscale representations for remote sensing imagery. Scale-MAE achieves an average of a $5.0\%$ non-parametric kNN classification improvement across eight remote sensing datasets compared to current state-of-the-art and obtains a $0.9$ mIoU to $3.8$ mIoU improvement on the SpaceNet building segmentation transfer task for a range of evaluation scales.
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Computational catalysis is playing an increasingly significant role in the design of catalysts across a wide range of applications. A common task for many computational methods is the need to accurately compute the minimum binding energy - the adsorption energy - for an adsorbate and a catalyst surface of interest. Traditionally, the identification of low energy adsorbate-surface configurations relies on heuristic methods and researcher intuition. As the desire to perform high-throughput screening increases, it becomes challenging to use heuristics and intuition alone. In this paper, we demonstrate machine learning potentials can be leveraged to identify low energy adsorbate-surface configurations more accurately and efficiently. Our algorithm provides a spectrum of trade-offs between accuracy and efficiency, with one balanced option finding the lowest energy configuration, within a 0.1 eV threshold, 86.63% of the time, while achieving a 1387x speedup in computation. To standardize benchmarking, we introduce the Open Catalyst Dense dataset containing nearly 1,000 diverse surfaces and 87,045 unique configurations.
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通常用于分析复杂数据集的维度减少和聚类技术,但它们的结果通常不容易解释。我们考虑如何支持用户在散点图上解释视表位结构,其中轴不直接解释,例如使用维度减少方法将数据投射到二维空间上。具体地,我们提出了一种新方法来自动计算可解释的聚类,其中说明在原始的高维空间中,并且群集在低维投影中相干。它通过使用信息理论提供复杂性和所提供信息量之间的可调平衡。我们研究了这个问题的计算复杂性,并对解决方案的搜索空间引入了高效,可调,贪婪优化算法的限制。此外,该算法还在称为excus的交互式工具中实现。几个数据集的实验突出显示,excrus可以提供信息丰富的和易于理解的模式,并且他们公开了算法有效的地方,并且考虑到可调性和可扩展性的余地有改进的空间。
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