DocXChain: A Powerful Open-Source Toolchain for Document Parsing and Beyond

In this report, we introduce DocXChain, a powerful open-source toolchain for document parsing, which is designed and developed to automatically convert the rich information embodied in unstructured documents, such as text, tables and charts, into structured representations that are readable and manipulable by machines. Specifically, basic capabilities, including text detection, text recognition, table structure recognition and layout analysis, are provided. Upon these basic capabilities, we also build a set of fully functional pipelines for document parsing, i.e., general text reading, table parsing, and document structurization, to drive various applications related to documents in real-world scenarios. Moreover, DocXChain is concise, modularized and flexible, such that it can be readily integrated with existing tools, libraries or models (such as LangChain and ChatGPT), to construct more powerful systems that can accomplish more complicated and challenging tasks. The code of DocXChain is publicly available at:~\url{https://github.com/AlibabaResearch/AdvancedLiterateMachinery/tree/main/Applications/DocXChain}Comment: 4 pages, 4 figures, 2 table

Bike to Basics: A Cargo Bicycle Design for Short-distance Commuting

Cycling plays an important role in our modern transportation system. It is simple, efficient and affordable. Bike is human powered, lightweight and relatively easy to manufacture compared to other vehicles. There are many companies dedicated to producing different types of bicycles for the market and there are many bicycle builders who craft authentic unique bicycles by hand. For my thesis project, I studied the history of the bicycle in order to understand the philosophy of bicycling. I addressed many types of problems in this field and did field research in bike shops and with bicycle enthusiasts. I learned many techniques for building high-functioning prototypes from bike builders and bike mechanics. I also visited Rochester Commuting Bike and the Rochester Public Market to do field research and scenario map design. I found many problems that need to be solved in this area and I designed three concepts with actual-scale prototypes to explore. Not all of the concepts functioned well. My techniques for bicycle building got better and better over the course of the design process. I got much valuable feedback from my professors, committee members and other industrial designers that helped me to achieve the final design. All of the welding parts of my final concept including frame, wheelie bar and saddle support were done by myself with the help of my professors and the teachers at Rochester Arc & Flame Center. I collected bicycle components and assembled the bicycle in the Industrial Design studio of RIT

Time-Reversal Even Charge Hall Effect from Twisted Interface Coupling

Under time-reversal symmetry, a linear charge Hall response is usually deemed to be forbidden by the Onsager relation. In this work, we discover a scenario for realizing a time-reversal even linear charge Hall effect in a non-isolated two-dimensional crystal allowed by time reversal symmetry. The restriction by Onsager relation is lifted by interfacial coupling with an adjacent layer, where the overall chiral symmetry requirement is fulfilled by a twisted stacking. We reveal the underlying band geometric quantity as the momentum-space vorticity of layer current. The effect is demonstrated in twisted bilayer graphene and twisted homobilayer transition metal dichalcogenides with a wide range of twist angles, which exhibit giant Hall ratios under experimentally practical conditions, with gate voltage controlled on-off switch. This work reveals intriguing Hall physics in chiral structures, and opens up a research direction of layertronics that exploits the quantum nature of layer degree of freedom to uncover exciting effects.Comment: Supplementary Information included. To appear in Nature Communication