As deep reinforcement learning (DRL) has been recognized as an effective approach in quantitative finance, getting hands-on experiences is attractive to beginners. However, to train a practical DRL trading agent that decides where to trade, at what price, and what quantity involves error-prone and arduous development and debugging… In this paper, we introduce a DRL library FinRL that facilitates beginners to expose themselves to quantitative finance and to develop their own stock trading strategies. Along with easily-reproducible tutorials, FinRL library […]

We present our deep learning framework to solve and accelerate the Time-Dependent partial differential equation’s solution of one and two spatial dimensions. We demonstrate DiffusionNet solver by solving the 2D transient heat conduction problem with Dirichlet boundary conditions… The model is trained on solution data calculated using the Alternating direction implicit method. We show the model’s ability to predict the solution from any combination of seven variables: the starting time step of the solution, initial condition, four boundary conditions, and […]

This paper presents a context-aware tracing strategy (CATS) for crisp edge detection with deep edge detectors, based on an observation that the localization ambiguity of deep edge detectors is mainly caused by the mixing phenomenon of convolutional neural networks: feature mixing in edge classification and side mixing during fusing side predictions. The CATS consists of two modules: a novel tracing loss that performs feature unmixing by tracing boundaries for better side edge learning, and a context-aware fusion block that tackles […]

Graph neural networks (GNNs) are a popular class of parametric model for learning over graph-structured data. Recent work has argued that GNNs primarily use the graph for feature smoothing, and have shown competitive results on benchmark tasks by simply operating on graph-smoothed node features, rather than using end-to-end learned feature hierarchies that are challenging to scale to large graphs… In this work, we ask whether these results can be extended to heterogeneous graphs, which encode multiple types of relationship between […]

Conventional unsupervised multi-source domain adaptation(UMDA) methods assume all source domains can be accessed directly. This neglects the privacy-preserving policy, that is,all the data and computations must be kept decentralized.There exists three problems in this scenario: (1)Minimizing the domain distance requires the pairwise calculation of the data from source and target domains, which is not accessible… (2)The communication cost and privacy security limit the application of UMDA methods (e.g.,the domain adversarial training). (3)Since users have no authority to checkthe data quality, […]

In this paper, we address the problem of estimating dense depth from a sequence of images using deep neural networks. Specifically, we employ a dense-optical-flow network to compute correspondences and then triangulate the point cloud to obtain an initial depth map… Parts of the point cloud, however, may be less accurate than others due to lack of common observations or small baseline-to-depth ratio. To further increase the triangulation accuracy, we introduce a depth-refinement network (DRN) that optimizes the initial depth […]

A consumer-dependent (business-to-consumer) organization tends to present itself as possessing a set of human qualities, which is termed as the brand personality of the company. The perception is impressed upon the consumer through the content, be it in the form of advertisement, blogs or magazines, produced by the organization… A consistent brand will generate trust and retain customers over time as they develop an affinity towards regularity and common patterns. However, maintaining a consistent messaging tone for a brand has […]

Rotation detection serves as a fundamental building block in many visual applications involving aerial image, scene text, and face etc. Differing from the dominant regression-based approaches for orientation estimation, this paper explores a relatively less-studied methodology based on classification… The hope is to inherently dismiss the boundary discontinuity issue as encountered by the regression-based detectors. We propose new techniques to push its frontier in two aspects: i) new encoding mechanism: the design of two Densely Coded Labels (DCL) for angle […]