Hong Zhang

Towards Transformation from UML to Event-B

2015

UML is one of the most widely used modeling languages for software development. It provides unique metamodels to describe systems in the form of graphics, which makes the whole modeling process visual and easy to …

An Improved PageRank Algorithm Based on Web Content

2015

With the development of Web technology and more kinds of information, how to provide high quality, relevant search results become a huge challenge to the current Web search engines. We analyze the shortcomings of PageRank …

Olap query performance tuning in Spark

2015

OLAP query is an efficient way to gain quick insight into big data. Spark is a fast and general engine for big data processing, which supports interactive OLAP queries. Nevertheless, as a general engine, there …

A study on the Evaluation System of Online Shopping Transactions

2016

With the development of electronic commerce, the transaction evaluation system plays a more and more important role in the online shopping. In view of the network of dishonest phenomenon, establishment of a more perfect, scientific …

Improving Elman neural network model via fusion of new feedback mechanism and Genetic Algorithm

2016

In this paper, we propose an improved Elman neural network model which contains a new feedback mechanism composed of a special external feedback we proposed and inherent internal feedback. In order to guarantee the generalization …

DSPM: A Platform for Personal Data Share and Privacy Protect Based on Metadata

2016

Personal data represents a post-industrial opportunity. In order to release the huge potential of personal data and enhance the rights of possession, use, and disposal, a highly reliable, secure and available infrastructure is required. Regarding …

An Evaluation Method for Large Language Models’ Code Generation Capability

2023

Large language models are becoming increasingly popular in various professional fields. One of their applications is providing code suggestions. However, the differences in code generation capabilities of different large language models and the problems they …

SPAC to Basics: A Monte Carlo Approach to Valuing De-SPAC Warrants with Path-Dependent Redemption Features

2024 · The Journal of Derivatives

The authors introduce a Monte Carlo model to value de-SPAC warrants. These warrants contain path-dependent cumulative Parisian redemption features that are ignored by simpler valuation methods. The authors’ model prices basic de-SPAC warrants accurately, provides …

Toward Data-Centric Service Composition

2024

Microservices are increasingly used in modern applications, leading to a growing need for effective service composition solutions. However, we argue that traditional API-centric composition mechanisms (e.g., RPC, REST, and Pub/Sub) hamper the modularity of microservices. …