人类有自然能够毫不费力地理解语言指挥,如“黄色轿车旁边的公园”,本能地知道车辆的道路的哪个地区应该导航。扩大这种对自主车辆的能力是创建根据人类命令响应和行动的完全自治代理的下一步。为此,我们提出了通过语言命令引用可导航区域(RNR),即导航的接地区域的新任务。 RNR与引用图像分割(RIS)不同,该图像分割(RIS)侧重于自然语言表达式而不是接地导航区域的对象接地。例如,对于指令“黄色轿车旁边的公园,”RIS将旨在分割推荐的轿车,而RNR旨在将建议的停车位分段在道路上分割。我们介绍了一个新的DataSet,talk2car-regseg,它将现有的talk2car数据集扩展,其中包含语言命令描述的区域的分段掩码。提供了一个单独的测试拆分,具有简明的机动指导命令,以评估我们数据集的实用性。我们使用新颖的变换器的架构基准测试所提出的数据集。我们呈现广泛的消融,并在多个评估指标上显示出卓越的性能。基于RNR输出产生轨迹的下游路径规划器确认了所提出的框架的功效。
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Sensor-based remote health monitoring is used in industrial, urban and healthcare settings to monitor ongoing operation of equipment and human health. An important aim is to intervene early if anomalous events or adverse health is detected. In the wild, these anomaly detection approaches are challenged by noise, label scarcity, high dimensionality, explainability and wide variability in operating environments. The Contextual Matrix Profile (CMP) is a configurable 2-dimensional version of the Matrix Profile (MP) that uses the distance matrix of all subsequences of a time series to discover patterns and anomalies. The CMP is shown to enhance the effectiveness of the MP and other SOTA methods at detecting, visualising and interpreting true anomalies in noisy real world data from different domains. It excels at zooming out and identifying temporal patterns at configurable time scales. However, the CMP does not address cross-sensor information, and cannot scale to high dimensional data. We propose a novel, self-supervised graph-based approach for temporal anomaly detection that works on context graphs generated from the CMP distance matrix. The learned graph embeddings encode the anomalous nature of a time context. In addition, we evaluate other graph outlier algorithms for the same task. Given our pipeline is modular, graph construction, generation of graph embeddings, and pattern recognition logic can all be chosen based on the specific pattern detection application. We verified the effectiveness of graph-based anomaly detection and compared it with the CMP and 3 state-of-the art methods on two real-world healthcare datasets with different anomalies. Our proposed method demonstrated better recall, alert rate and generalisability.
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多项研究表明,从孕妇中期超声检查(USG)检查获得标准化的胎儿脑生物特征?获得这些测量值是高度主观的,专业驱动的,需要多年的培训经验,从而限制了所有怀孕母亲的优质产前护理。在这项研究中,我们提出了一种深度学习方法(DL)方法,以通过准确和自动化的卡钳放置(每次生物测量法)将其作为地标建模,从而从跨炉平面(TC)的2D USG图像(TC)计算3个关键的胎儿脑生物特征。检测问题。我们利用了临床相关的生物识别约束(卡尺点之间的关系)和与域相关的数据增强,以提高U-NET DL模型的准确性(经过训练/测试:596张图像,473个受试者/143张图像,143个受试者)。我们进行了多个实验,证明了DL主链,数据增强,推广性和基准测试,通过广泛的临床验证(DL与7位经验丰富的临床医生)对最新的最新方法进行了测试。在所有情况下,单个卡尺点和计算生物特征的放置的平均误差都与临床医生之间的错误率相当。所提出的框架的临床翻译可以帮助新手用户在可靠和标准化的胎儿大脑超声图评估中的新手使用者。
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