差异隐私(DP)已被出现为严格的形式主义,以推理可量化的隐私泄漏。在机器学习(ML)中,已采用DP限制推理/披露训练示例。在现有的工作中杠杆横跨ML管道,尽管隔离,通常专注于梯度扰动等机制。在本文中,我们展示了DP-util,DP整体实用分析框架,跨越ML管道,重点是输入扰动,客观扰动,梯度扰动,输出扰动和预测扰动。在隐私敏感数据上给出ML任务,DP-Util使ML隐私从业者能够对DP在这五个扰动点中的影响,以模型公用事业丢失,隐私泄漏和真正透露的数量来测量DP的影响。训练样本。我们在视觉,医疗和金融数据集上使用两个代表性学习算法(Logistic回归和深神经网络)来评估DP-Uts,以防止会员资格推论攻击作为案例研究攻击。我们结果的一个亮点是,预测扰动一致地在所有数据集中始终如一地实现所有模型的最低实用损耗。在Logistic回归模型中,与其他扰动技术相比,客观扰动导致最低的隐私泄漏。对于深度神经网络,梯度扰动导致最低的隐私泄漏。此外,我们的结果揭示了记录的结果表明,由于隐私泄漏增加,差异私有模型揭示了更多数量的成员样本。总体而言,我们的研究结果表明,为了使使用的扰动机制有明智的决定,ML隐私从业者需要检查优化技术(凸与非凸),扰动机制,课程数量和隐私预算之间的动态。
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Active target sensing is the task of discovering and classifying an unknown number of targets in an environment and is critical in search-and-rescue missions. This paper develops a deep reinforcement learning approach to plan informative trajectories that increase the likelihood for an uncrewed aerial vehicle (UAV) to discover missing targets. Our approach efficiently (1) explores the environment to discover new targets, (2) exploits its current belief of the target states and incorporates inaccurate sensor models for high-fidelity classification, and (3) generates dynamically feasible trajectories for an agile UAV by employing a motion primitive library. Extensive simulations on randomly generated environments show that our approach is more efficient in discovering and classifying targets than several other baselines. A unique characteristic of our approach, in contrast to heuristic informative path planning approaches, is that it is robust to varying amounts of deviations of the prior belief from the true target distribution, thereby alleviating the challenge of designing heuristics specific to the application conditions.
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The cover is the face of a book and is a point of attraction for the readers. Designing book covers is an essential task in the publishing industry. One of the main challenges in creating a book cover is representing the theme of the book's content in a single image. In this research, we explore ways to produce a book cover using artificial intelligence based on the fact that there exists a relationship between the summary of the book and its cover. Our key motivation is the application of text-to-image synthesis methods to generate images from given text or captions. We explore several existing text-to-image conversion techniques for this purpose and propose an approach to exploit these frameworks for producing book covers from provided summaries. We construct a dataset of English books that contains a large number of samples of summaries of existing books and their cover images. In this paper, we describe our approach to collecting, organizing, and pre-processing the dataset to use it for training models. We apply different text-to-image synthesis techniques to generate book covers from the summary and exhibit the results in this paper.
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