Transaction frauds impose serious threats onto e-commerce. We present CLUE, a novel deep-learning-based transaction fraud detection system we design and deploy at JD.com, one of the largest ecommerce platforms in China with over 220 million active users. CLUE captures detailed information on users’ click actions using neural-network based embedding, and models sequences of such clicks using the...

We analyze recycling decisions for bioplastics using a natural field experiment. Bioplastics have environmental benefits – such as reduced energy use in production and enhanced biodegredation compared to conventional plastics. Recycling that are not consistent with government guidelines, however, may cause rebound effect. For instance when biobased plastics contaminate organic waste streams, or...

We designed and implemented a software system, called WebCrow, that represents the first solver for Italian crosswords and the first system that tackles a language game using the Web as knowledge base. Its core feature is the Web Search Module that produces a special form of web-based question answering that we call clue-answering. This paper will focus its attention on this task. The web-searc...

”Semantic gap” is an open challenging problem in content-based image retrieval. It reflects the discrepancy between low-level imagery features used by the retrieval algorithm and high-level concepts required by system users. This paper introduces a novel image retrieval scheme, CLUster-based rEtrieval of images by unsupervised learning (CLUE), to tackle the semantic gap problem. CLUE is built o...

We briefly review in the present article the conjecture of electromagnetic mass by Lorentz. The philosophical perspectives and historical accounts of this idea are described, especially, in the light of Einstein's special relativistic formula E = mc 2. It is shown that the Lorentz's electromagnetic mass model has taken various shapes through its journey and the goal is not yet reached.

Analyzing land use changes (LUC) in both past and future scenarios is critical to optimize local ecology formulate policies for sustainable development. We analyzed LUC characteristics Huaibei City, China from 1985 2020, used the CLUE-S PLUS models simulate LU 2020. Then, we compared accuracy of simulation phase chose model project under four 2025. The results showed following: (1) Farmland gra...