论文标题
基于区块链的过程执行时间
Time in Blockchain-Based Process Execution
论文作者
论文摘要
使用智能合约的可追溯执行业务流程和编舞是区块链技术在业务流程管理（BPM）中的重要应用。现有的方法支持各种模式，建模语言和区块链体系结构，这些模式涵盖了各种实用场景。但是，他们在很大程度上忽略了时间的重要方面，过程的关键部分以及截止日期，延迟和其他时间限制。我们认为，这种赤字是由于智能合约的固有局限性 - 特别是在研究和实践中使用的流行区块链平台上没有自然的测量时间概念。我们在区块链平台上介绍了一组时间量度，以减轻这些问题，并系统地比较它们的属性。我们还提示它们适合促进过程模型中常见的各种时间约束。
The traceable execution of business processes and choreographies using smart contracts is one prominent application of blockchain technology in Business Process Management (BPM). Existing approaches support a large set of patterns, modeling languages, and blockchain architectures, which cover a wide range of practical scenarios. However, they largely neglect the important aspect of time, a crucial part of process and choreography models manifested in deadlines, delays, and other temporal constraints. We argue that this deficit is due to inherent limitations of smart contracts---in particular the absence of a natural notion of measuring time---on popular blockchain platforms used in research and practice. We introduce a set of time measures available on blockchain platforms to alleviate these issues, and systematically compare their properties. We also give hints as to their suitability for facilitating various temporal constraints commonly found in process models.
