Generalizability of time series forecasting models depends on the quality of model selection. Temporal cross validation (TCV) is a standard technique to perform model selection in forecasting tasks. TCV sequentially partitions the training time series into train and validation windows, and performs hyperparameter optmization (HPO) of the forecast model to select the model with the best validation performance. Model selection with TCV often leads to poor test performance when the test data distribution differs from that of the validation data. We propose a novel model selection method, H-Pro that exploits the data hierarchy often associated with a time series dataset. Generally, the aggregated data at the higher levels of the hierarchy show better predictability and more consistency compared to the bottom-level data which is more sparse and (sometimes) intermittent. H-Pro performs the HPO of the lowest-level student model based on the test proxy forecasts obtained from a set of teacher models at higher levels in the hierarchy. The consistency of the teachers' proxy forecasts help select better student models at the lowest-level. We perform extensive empirical studies on multiple datasets to validate the efficacy of the proposed method. H-Pro along with off-the-shelf forecasting models outperform existing state-of-the-art forecasting methods including the winning models of the M5 point-forecasting competition.

在机器人，游戏和许多其他地区，加固学习导致各种区域导致相当大的突破。但是在复杂的真实决策中申请RL仍然有限。运营管理中的许多问题（例如，库存和收入管理）的特点是大动作空间和随机系统动态。这些特征使得解决问题的问题很难解决依赖于每步行动问题解决枚举技术的现有RL方法。要解决这些问题，我们开发可编程演员强化学习（PARL），一种策略迭代方法，该方法使用整数编程和示例平均近似的技术。在分析上，我们表明，对于给定的批评者，每个迭代的学习政策会聚到最佳政策，因为不确定性的底层样本转到无穷大。实际上，我们表明，即使来自潜在的不确定性的样本很少，潜在的不确定分布的正确选择的不确定分布可以在最佳的演员政策附近产生。然后，我们将算法应用于具有复杂的供应链结构的现实库存管理问题，并显示Parl优于这些设置中的最先进的RL和库存优化方法。我们发现Parl优于常用的基础股票启发式44.7％，并且在不同供应链环境中平均最高可达的RL方法高达12.1％。

In this current technological world, the application of machine learning is becoming ubiquitous. Incorporating machine learning algorithms on extremely low-power and inexpensive embedded devices at the edge level is now possible due to the combination of the Internet of Things (IoT) and edge computing. To estimate an outcome, traditional machine learning demands vast amounts of resources. The TinyML concept for embedded machine learning attempts to push such diversity from usual high-end approaches to low-end applications. TinyML is a rapidly expanding interdisciplinary topic at the convergence of machine learning, software, and hardware centered on deploying deep neural network models on embedded (micro-controller-driven) systems. TinyML will pave the way for novel edge-level services and applications that survive on distributed edge inferring and independent decision-making rather than server computation. In this paper, we explore TinyML's methodology, how TinyML can benefit a few specific industrial fields, its obstacles, and its future scope.

Many studies have examined the shortcomings of word error rate (WER) as an evaluation metric for automatic speech recognition (ASR) systems, particularly when used for spoken language understanding tasks such as intent recognition and dialogue systems. In this paper, we propose Hybrid-SD (H_SD), a new hybrid evaluation metric for ASR systems that takes into account both semantic correctness and error rate. To generate sentence dissimilarity scores (SD), we built a fast and lightweight SNanoBERT model using distillation techniques. Our experiments show that the SNanoBERT model is 25.9x smaller and 38.8x faster than SRoBERTa while achieving comparable results on well-known benchmarks. Hence, making it suitable for deploying with ASR models on edge devices. We also show that H_SD correlates more strongly with downstream tasks such as intent recognition and named-entity recognition (NER).

State-of-the-art algorithms for Approximate Nearest Neighbor Search (ANNS) such as DiskANN, FAISS-IVF, and HNSW build data dependent indices that offer substantially better accuracy and search efficiency over data-agnostic indices by overfitting to the index data distribution. When the query data is drawn from a different distribution - e.g., when index represents image embeddings and query represents textual embeddings - such algorithms lose much of this performance advantage. On a variety of datasets, for a fixed recall target, latency is worse by an order of magnitude or more for Out-Of-Distribution (OOD) queries as compared to In-Distribution (ID) queries. The question we address in this work is whether ANNS algorithms can be made efficient for OOD queries if the index construction is given access to a small sample set of these queries. We answer positively by presenting OOD-DiskANN, which uses a sparing sample (1% of index set size) of OOD queries, and provides up to 40% improvement in mean query latency over SoTA algorithms of a similar memory footprint. OOD-DiskANN is scalable and has the efficiency of graph-based ANNS indices. Some of our contributions can improve query efficiency for ID queries as well.

在本文中，我们提出了一种用于在离散时间马尔可夫链（DTMC）上指定的概率超普通统计模型检查（SMC）的贝叶斯方法。尽管使用顺序概率比测试（SPRT）的HyperPCTL*的SMC曾经探索过，但我们基于贝叶斯假说检验开发了一种替代SMC算法。与PCTL*相比，由于它们在DTMC的多个路径上同时解释，验证HyperPCTL*公式是复杂的。此外，由于SMC无法返回Subformulae的满意度问题，因此扩展非稳定设置的自下而上的模型检查算法并不直接，相反，它仅通过高级返回正确的答案。信心。我们根据修改后的贝叶斯测试，提出了一种HyperPCTL* SMC的递归算法，该测试因递归满意度结果的不确定性而导致。我们已经在Python工具箱Hybrover中实现了算法，并将我们的方法与基于SPRT的SMC进行了比较。我们的实验评估表明，我们的贝叶斯SMC算法在验证时间和推断给定HyperPCTL*公式的满意度所需的样品数量方面的性能更好。

我们将人机协作问题解决的问题视为一项计划任务，再加上自然语言交流。我们的框架由三个组成部分组成 - 一种自然语言引擎，将语言话语解析为正式代表，反之亦然，这是一个概念学习者，该概念学习者基于与用户的有限互动来诱导计划的广义概念，以及解决方案的HTN规划师，以解决该计划。基于人类互动的任务。我们说明了该框架通过在基于Minecraft的Blocksworld域中的协作构建任务中证明协作问题解决的关键挑战的能力。随附的演示视频可在https://youtu.be/q1pwe4aahf0上获得。

大多数怀孕和出生会导致良好的结果，但是并不常见，当发生时，它们可能会与母亲和婴儿的严重影响相关。预测建模有可能通过更好地理解风险因素，增强监视以及更及时，更适当的干预措施来改善结果，从而帮助产科医生提供更好的护理。对于三种类型的并发症，我们使用可解释的提升机（EBM）（玻璃箱模型）来识别和研究最重要的风险因素，以获得清晰度：（i）严重的孕妇发病率（SMM），（ii）（iii）早产启示性。在使用EBM的解释性来揭示出对风险促成的特征的惊人见解时，我们的实验表明EBM与其他黑盒ML方法（例如深神经网和随机森林）的准确性相匹配。

机器学习（ML）可解释性技术可以揭示数据中的不良模式，这些模型模型开发以做出预测 - 一旦部署就会​​造成危害。但是，如何采取行动解决这些模式并不总是很清楚。在ML与人类计算机互动研究人员，医师和数据科学家之间的合作中，我们开发了GAM Changer，这是第一个互动系统，可帮助域专家和数据科学家轻松，负责任地编辑通用的添加剂模型（GAM）和修复有问题的模式。借助新颖的交互技术，我们的工具将可解释性置于行动中 - 使用户能够分析，验证和使模型行为与知识和价值相结合。医师已经开始使用我们的工具来调查和修复肺炎和败血症的风险预测模型，以及在不同领域工作的7位数据科学家的评估突出显示我们的工具易于使用，满足他们的模型编辑需求，并适合他们当前的工作流程。我们的工具以现代网络技术为基础，在用户的网络浏览器或计算笔记本电脑中本地运行，从而降低了使用的障碍。 GAM Changer可在以下公共演示链接中获得：https：//interpret.ml/gam-changer。

由于交通环境的复杂性和波动性，自主驾驶中的决策是一个显着难的问题。在这个项目中，我们使用深度Q-network，以及基于规则的限制来使车道变化的决定。可以通过将高级横向决策与基于低级规则的轨迹监视相结合来获得安全高效的车道改变行为。预计该代理商在培训中，在实际的UDAcity模拟器中进行了适当的车道更换操作，总共100次发作。结果表明，基于规则的DQN比DQN方法更好地执行。基于规则的DQN达到0.8的安全速率和47英里/小时的平均速度