bump狩猎与样本空间中的发现有意义的数据子集，称为颠簸。这些传统上被认为是基础密度函数图中的模态或凹区域。我们根据概率密度的曲率功能定义抽象的凸起构建体。然后，我们探讨了涉及衍生物最高到二阶的几种替代特征。特别是，在多元案例中提出了适当的善良和加斯金斯原始凹凸凹凸的实施。此外，我们将探索性数据分析概念（如平均曲率和拉普拉斯人）在应用域中产生良好结果。我们的方法可以通过插件内核密度估计器来解决曲率功能的近似。我们提供了理论上的结果，以确保在Hausdorff距离内的凸界边界的渐近一致性，并具有负担得起的收敛速度。我们还提出了渐近有效且一致的置信区域边界曲率凸起。该理论通过NBA，MLB和NFL的数据集的体育分析中的几种用例来说明。我们得出的结论是，不同的曲率实例有效地结合了以产生洞察力的可视化。

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。

基于模型的经颅超声疗法的治疗计划通常涉及从头部的X射线计算机断层扫描（CT）图像中映射头骨的声学特性。在这里，将三种用于从磁共振（MR）图像中生成伪CT图像的方法作为CT的替代方法。在配对的MR-CT图像上训练了卷积神经网络（U-NET），以从T1加权或零回波时间（ZTE）MR图像（分别表示TCT和ZCT）生成伪CT图像。还实施了从中兴通讯到伪CT的直接映射（表示为CCT）。在比较测试集的伪CT和地面真相CT图像时，整个头部的平均绝对误差为133、83和145 Hounsfield单位（HU），以及398、222和336 HU的头骨内的颅骨内部的平均误差为133、83和145个。 TCT，ZCT和CCT图像。还使用生成的伪CT图像进行了超声模拟，并将其与基于CT的模拟进行了比较。使用环形阵列传感器针对视觉或运动皮层。基于TCT图像的模拟，模拟局灶性局灶性，焦点位置和焦距的平均差异为9.9％，1.5 mm和15.1％，ZCT的平均差异为5.7％，0.6 mm和5.7％，为6.7％，和5.7％ CCT为0.9毫米，为12.1％。映射的图像的改进结果突出了使用成像序列的优势，从而改善了颅骨的对比度。总体而言，这些结果表明，基于MR图像的声学仿真可以与基于CT的声学相比精度。

Logic Mill is a scalable and openly accessible software system that identifies semantically similar documents within either one domain-specific corpus or multi-domain corpora. It uses advanced Natural Language Processing (NLP) techniques to generate numerical representations of documents. Currently it leverages a large pre-trained language model to generate these document representations. The system focuses on scientific publications and patent documents and contains more than 200 million documents. It is easily accessible via a simple Application Programming Interface (API) or via a web interface. Moreover, it is continuously being updated and can be extended to text corpora from other domains. We see this system as a general-purpose tool for future research applications in the social sciences and other domains.

This paper proposes a novel observer-based controller for Vertical Take-Off and Landing (VTOL) Unmanned Aerial Vehicle (UAV) designed to directly receive measurements from a Vision-Aided Inertial Navigation System (VA-INS) and produce the required thrust and rotational torque inputs. The VA-INS is composed of a vision unit (monocular or stereo camera) and a typical low-cost 6-axis Inertial Measurement Unit (IMU) equipped with an accelerometer and a gyroscope. A major benefit of this approach is its applicability for environments where the Global Positioning System (GPS) is inaccessible. The proposed VTOL-UAV observer utilizes IMU and feature measurements to accurately estimate attitude (orientation), gyroscope bias, position, and linear velocity. Ability to use VA-INS measurements directly makes the proposed observer design more computationally efficient as it obviates the need for attitude and position reconstruction. Once the motion components are estimated, the observer-based controller is used to control the VTOL-UAV attitude, angular velocity, position, and linear velocity guiding the vehicle along the desired trajectory in six degrees of freedom (6 DoF). The closed-loop estimation and the control errors of the observer-based controller are proven to be exponentially stable starting from almost any initial condition. To achieve global and unique VTOL-UAV representation in 6 DoF, the proposed approach is posed on the Lie Group and the design in unit-quaternion is presented. Although the proposed approach is described in a continuous form, the discrete version is provided and tested. Keywords: Vision-aided inertial navigation system, unmanned aerial vehicle, vertical take-off and landing, stochastic, noise, Robotics, control systems, air mobility, observer-based controller algorithm, landmark measurement, exponential stability.

In this work a novel recommender system (RS) for Tourism is presented. The RS is context aware as is now the rule in the state-of-the-art for recommender systems and works on top of a tourism ontology which is used to group the different items being offered. The presented RS mixes different types of recommenders creating an ensemble which changes on the basis of the RS's maturity. Starting from simple content-based recommendations and iteratively adding popularity, demographic and collaborative filtering methods as rating density and user cardinality increases. The result is a RS that mutates during its lifetime and uses a tourism ontology and natural language processing (NLP) to correctly bin the items to specific item categories and meta categories in the ontology. This item classification facilitates the association between user preferences and items, as well as allowing to better classify and group the items being offered, which in turn is particularly useful for context-aware filtering.

Recent advances in upper limb prostheses have led to significant improvements in the number of movements provided by the robotic limb. However, the method for controlling multiple degrees of freedom via user-generated signals remains challenging. To address this issue, various machine learning controllers have been developed to better predict movement intent. As these controllers become more intelligent and take on more autonomy in the system, the traditional approach of representing the human-machine interface as a human controlling a tool becomes limiting. One possible approach to improve the understanding of these interfaces is to model them as collaborative, multi-agent systems through the lens of joint action. The field of joint action has been commonly applied to two human partners who are trying to work jointly together to achieve a task, such as singing or moving a table together, by effecting coordinated change in their shared environment. In this work, we compare different prosthesis controllers (proportional electromyography with sequential switching, pattern recognition, and adaptive switching) in terms of how they present the hallmarks of joint action. The results of the comparison lead to a new perspective for understanding how existing myoelectric systems relate to each other, along with recommendations for how to improve these systems by increasing the collaborative communication between each partner.

A "heart attack" or myocardial infarction (MI), occurs when an artery supplying blood to the heart is abruptly occluded. The "gold standard" method for imaging MI is Cardiovascular Magnetic Resonance Imaging (MRI), with intravenously administered gadolinium-based contrast (late gadolinium enhancement). However, no "gold standard" fully automated method for the quantification of MI exists. In this work, we propose an end-to-end fully automatic system (MyI-Net) for the detection and quantification of MI in MRI images. This has the potential to reduce the uncertainty due to the technical variability across labs and inherent problems of the data and labels. Our system consists of four processing stages designed to maintain the flow of information across scales. First, features from raw MRI images are generated using feature extractors built on ResNet and MoblieNet architectures. This is followed by the Atrous Spatial Pyramid Pooling (ASPP) to produce spatial information at different scales to preserve more image context. High-level features from ASPP and initial low-level features are concatenated at the third stage and then passed to the fourth stage where spatial information is recovered via up-sampling to produce final image segmentation output into: i) background, ii) heart muscle, iii) blood and iv) scar areas. New models were compared with state-of-art models and manual quantification. Our models showed favorable performance in global segmentation and scar tissue detection relative to state-of-the-art work, including a four-fold better performance in matching scar pixels to contours produced by clinicians.

Increasing popularity of deep-learning-powered applications raises the issue of vulnerability of neural networks to adversarial attacks. In other words, hardly perceptible changes in input data lead to the output error in neural network hindering their utilization in applications that involve decisions with security risks. A number of previous works have already thoroughly evaluated the most commonly used configuration - Convolutional Neural Networks (CNNs) against different types of adversarial attacks. Moreover, recent works demonstrated transferability of the some adversarial examples across different neural network models. This paper studied robustness of the new emerging models such as SpinalNet-based neural networks and Compact Convolutional Transformers (CCT) on image classification problem of CIFAR-10 dataset. Each architecture was tested against four White-box attacks and three Black-box attacks. Unlike VGG and SpinalNet models, attention-based CCT configuration demonstrated large span between strong robustness and vulnerability to adversarial examples. Eventually, the study of transferability between VGG, VGG-inspired SpinalNet and pretrained CCT 7/3x1 models was conducted. It was shown that despite high effectiveness of the attack on the certain individual model, this does not guarantee the transferability to other models.

Spectrum coexistence is essential for next generation (NextG) systems to share the spectrum with incumbent (primary) users and meet the growing demand for bandwidth. One example is the 3.5 GHz Citizens Broadband Radio Service (CBRS) band, where the 5G and beyond communication systems need to sense the spectrum and then access the channel in an opportunistic manner when the incumbent user (e.g., radar) is not transmitting. To that end, a high-fidelity classifier based on a deep neural network is needed for low misdetection (to protect incumbent users) and low false alarm (to achieve high throughput for NextG). In a dynamic wireless environment, the classifier can only be used for a limited period of time, i.e., coherence time. A portion of this period is used for learning to collect sensing results and train a classifier, and the rest is used for transmissions. In spectrum sharing systems, there is a well-known tradeoff between the sensing time and the transmission time. While increasing the sensing time can increase the spectrum sensing accuracy, there is less time left for data transmissions. In this paper, we present a generative adversarial network (GAN) approach to generate synthetic sensing results to augment the training data for the deep learning classifier so that the sensing time can be reduced (and thus the transmission time can be increased) while keeping high accuracy of the classifier. We consider both additive white Gaussian noise (AWGN) and Rayleigh channels, and show that this GAN-based approach can significantly improve both the protection of the high-priority user and the throughput of the NextG user (more in Rayleigh channels than AWGN channels).