症状检查已成为收集症状和诊断患者的重要工具,最大限度地减少临床人员的参与。我们开发了一种机器学习支持的系统,智能曲线,超越传统症状,通过与电子医疗记录(EMR)紧密的双向集成。在EMR衍生的患者历史上,我们的系统将患者的首席投诉识别自由文本条目,然后询问一系列离散问题以获得相关的症状学。患者特定数据用于预测详细的ICD-10-CM代码以及药物,实验室和成像订单。然后将患者的反应和临床决策支持(CDS)预测插入EMR。要培训机器学习组件的智能路程,我们使用了超过2500万级初级保健遭遇的新型数据集和100万患者的自由文本原因的参赛作品。这些数据集用于构建:(1)基于长的短期存储器(LSTM)的患者历史表示,(2)用于首发投诉提取的微调变压器模型,(3)一个用于问题测序的随机林模型, (4)用于CDS预测的前馈网络。我们的系统总共支持337名患者的首席投诉,该投诉共同组成了Kaiser Permanente的所有初级保健费用。
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Algorithms that involve both forecasting and optimization are at the core of solutions to many difficult real-world problems, such as in supply chains (inventory optimization), traffic, and in the transition towards carbon-free energy generation in battery/load/production scheduling in sustainable energy systems. Typically, in these scenarios we want to solve an optimization problem that depends on unknown future values, which therefore need to be forecast. As both forecasting and optimization are difficult problems in their own right, relatively few research has been done in this area. This paper presents the findings of the ``IEEE-CIS Technical Challenge on Predict+Optimize for Renewable Energy Scheduling," held in 2021. We present a comparison and evaluation of the seven highest-ranked solutions in the competition, to provide researchers with a benchmark problem and to establish the state of the art for this benchmark, with the aim to foster and facilitate research in this area. The competition used data from the Monash Microgrid, as well as weather data and energy market data. It then focused on two main challenges: forecasting renewable energy production and demand, and obtaining an optimal schedule for the activities (lectures) and on-site batteries that lead to the lowest cost of energy. The most accurate forecasts were obtained by gradient-boosted tree and random forest models, and optimization was mostly performed using mixed integer linear and quadratic programming. The winning method predicted different scenarios and optimized over all scenarios jointly using a sample average approximation method.
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Cloth in the real world is often crumpled, self-occluded, or folded in on itself such that key regions, such as corners, are not directly graspable, making manipulation difficult. We propose a system that leverages visual and tactile perception to unfold the cloth via grasping and sliding on edges. By doing so, the robot is able to grasp two adjacent corners, enabling subsequent manipulation tasks like folding or hanging. As components of this system, we develop tactile perception networks that classify whether an edge is grasped and estimate the pose of the edge. We use the edge classification network to supervise a visuotactile edge grasp affordance network that can grasp edges with a 90% success rate. Once an edge is grasped, we demonstrate that the robot can slide along the cloth to the adjacent corner using tactile pose estimation/control in real time. See http://nehasunil.com/visuotactile/visuotactile.html for videos.
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Unhealthy dietary habits are considered as the primary cause of multiple chronic diseases such as obesity and diabetes. The automatic food intake monitoring system has the potential to improve the quality of life (QoF) of people with dietary related diseases through dietary assessment. In this work, we propose a novel contact-less radar-based food intake monitoring approach. Specifically, a Frequency Modulated Continuous Wave (FMCW) radar sensor is employed to recognize fine-grained eating and drinking gestures. The fine-grained eating/drinking gesture contains a series of movement from raising the hand to the mouth until putting away the hand from the mouth. A 3D temporal convolutional network (3D-TCN) is developed to detect and segment eating and drinking gestures in meal sessions by processing the Range-Doppler Cube (RD Cube). Unlike previous radar-based research, this work collects data in continuous meal sessions. We create a public dataset that contains 48 meal sessions (3121 eating gestures and 608 drinking gestures) from 48 participants with a total duration of 783 minutes. Four eating styles (fork & knife, chopsticks, spoon, hand) are included in this dataset. To validate the performance of the proposed approach, 8-fold cross validation method is applied. Experimental results show that our proposed 3D-TCN outperforms the model that combines a convolutional neural network and a long-short-term-memory network (CNN-LSTM), and also the CNN-Bidirectional LSTM model (CNN-BiLSTM) in eating and drinking gesture detection. The 3D-TCN model achieves a segmental F1-score of 0.887 and 0.844 for eating and drinking gestures, respectively. The results of the proposed approach indicate the feasibility of using radar for fine-grained eating and drinking gesture detection and segmentation in meal sessions.
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Cement is the most used construction material. The performance of cement hydrate depends on the constituent phases, viz. alite, belite, aluminate, and ferrites present in the cement clinker, both qualitatively and quantitatively. Traditionally, clinker phases are analyzed from optical images relying on a domain expert and simple image processing techniques. However, the non-uniformity of the images, variations in the geometry and size of the phases, and variabilities in the experimental approaches and imaging methods make it challenging to obtain the phases. Here, we present a machine learning (ML) approach to detect clinker microstructure phases automatically. To this extent, we create the first annotated dataset of cement clinker by segmenting alite and belite particles. Further, we use supervised ML methods to train models for identifying alite and belite regions. Specifically, we finetune the image detection and segmentation model Detectron-2 on the cement microstructure to develop a model for detecting the cement phases, namely, Cementron. We demonstrate that Cementron, trained only on literature data, works remarkably well on new images obtained from our experiments, demonstrating its generalizability. We make Cementron available for public use.
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Signature-based malware detectors have proven to be insufficient as even a small change in malignant executable code can bypass these signature-based detectors. Many machine learning-based models have been proposed to efficiently detect a wide variety of malware. Many of these models are found to be susceptible to adversarial attacks - attacks that work by generating intentionally designed inputs that can force these models to misclassify. Our work aims to explore vulnerabilities in the current state of the art malware detectors to adversarial attacks. We train a Transformers-based malware detector, carry out adversarial attacks resulting in a misclassification rate of 23.9% and propose defenses that reduce this misclassification rate to half. An implementation of our work can be found at https://github.com/yashjakhotiya/Adversarial-Attacks-On-Transformers.
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现代社会有兴趣由于复杂的相机的激增而捕获高分辨率和优质图像。但是,如果在计算机视觉任务中使用了此类图像,则图像中的噪声污染不仅较低,而且相反会影响随后的过程,例如遥感,对象跟踪等。高分辨率图像的时间处理受图像捕获仪器的硬件限制的限制。 Geodesic Gramian denoising(GGD)是一种基于多种噪声滤波方法,我们在过去的研究中介绍了该方法,它利用了Geodesics的Gramian Gramian矩阵的一些突出的奇异向量进行噪声滤波过程。 GDD遇到$ \ MATHCAL {O}(n^6)$时,GDD的适用性受到限制^2 $数据矩阵由单数值分解(SVD)实现。在这项研究中,我们通过用四种不同的单数矢量近似技术代替其SVD步骤来提高GGD框架的效率。在这里,我们比较集成到GGD中的四个技术之间的计算时间和噪声过滤性能。
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人类在整个生命周期中不断学习,通过积累多样化的知识并为未来的任务进行微调。当出现类似目标时,神经网络会遭受灾难性忘记,在学习过程中跨顺序任务跨好任务的数据分布是否不固定。解决此类持续学习(CL)问题的有效方法是使用超网络为目标网络生成任务依赖权重。但是,现有基于超网的方法的持续学习性能受到整个层之间权重的独立性的假设,以维持参数效率。为了解决这一限制,我们提出了一种新颖的方法,该方法使用依赖关系保留超网络来为目标网络生成权重,同时还保持参数效率。我们建议使用基于复发的神经网络(RNN)的超网络,该网络可以有效地生成层权重,同时允许在它们的依赖关系中。此外,我们为基于RNN的超网络提出了新颖的正则化和网络增长技术,以进一步提高持续的学习绩效。为了证明所提出的方法的有效性,我们对几个图像分类持续学习任务和设置进行了实验。我们发现,基于RNN HyperNetworks的建议方法在所有这些CL设置和任务中都优于基准。
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人们最近开始通过社交网站上用户生成的多媒体材料来传达自己的思想和观点。此信息可以是图像,文本,视频或音频。近年来,这种模式的发生频率有所增加。 Twitter是最广泛使用的社交媒体网站之一,它也是最好的地点之一,可以使人们对与蒙基波疾病有关的事件有一种了解。这是因为Twitter上的推文被缩短并经常更新,这两者都促成了平台的角色。这项研究的基本目标是对人们对这种情况的存在的各种反应进行更深入的理解。这项研究重点是找出个人对猴蛋白酶疾病的看法,该疾病介绍了基于CNN和LSTM的混合技术。我们已经考虑了用户推文的所有三个可能的极性:正,负和中立。使用CNN和LSTM构建的架构来确定预测模型的准确性。推荐模型的准确性在Monkeypox Tweet数据集上为94%。其他性能指标(例如准确性,召回和F1得分)也用于测试我们的模型和最大程度和资源有效的方式。然后将发现与更传统的机器学习方法进行比较。这项研究的发现有助于提高对普通人群中蒙基托感染的认识。
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在这项研究中,我们研究了中枢神经系统(CNS)如何在个人在虚拟现实(VR)环境中执行复杂的捕捉任务时如何组织姿势控制协同作用。机器人直立的立式培训师(健壮)平台,包括表面肌电图和运动学,用于研究中枢神经系统微型姿势协同作用,具有扰动和辅助的力场。招募了一个没有辅助力的对照组,以阐明力场在扰动后以及VR达到任务期间对运动性能和姿势协同组织的影响。我们发现,辅助力量的应用显着改善了达到和平衡控制。接收辅助力的小组显示出四个姿势控制协同作用,其特征是较高的复杂性(即涉及更多肌肉)。但是,控制受试者显示了八种协同作用,这些协同作用减少了肌肉的数量。总之,辅助力减少了姿势协同的数量,同时增加了肌肉模块组成的复杂性。
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