为机器学习领域适配提供问题导向框架,助你快速判断是否适用及如何选方法。
Towards a Problem-Oriented Domain Adaptation Framework for Machine Learning
- 基于设计科学构建五类场景框架,明确每类问题的应对策略
- 通过100人实验与多数据集验证,有效识别各类领域适配问题
- 适合缺乏领域知识的研究者和实践者快速决策
领域自适应是机器学习的一个分支,旨在将源域知识迁移到目标域完成相同任务,常出现在数据来源多样或数据随时间变化的场景。尽管该领域已有诸多进展,但研究者和实践者仍难以判断特定问题是否适合采用领域自适应,也难选择合适方法。本文采用设计科学研究方法,构建并迭代完善了一个问题导向的领域自适应框架,历经三次评估。该框架区分五类典型领域自适应场景,针对每类提供解决方案建议,并给出问题归属判断指南。在人工与真实数据集上,以及一项包含100名参与者的实验研究中,框架展现出良好解释力,能有效捕捉各类领域自适应问题。本研究为缺乏深入知识的研究者和实践者提供了清晰指导。
原文摘要 · Abstract (English)
Domain adaptation is a sub-field of machine learning that involves transferring knowledge from a source domain to perform the same task in the target domain. It is a typical challenge in machine learning that arises, e.g., when data is obtained from various sources or when using a data basis that changes over time. Recent advances in the field offer promising methods, but it is still challenging for researchers and practitioners to determine if domain adaptation is suitable for a given problem -- and, subsequently, to select the appropriate approach. This article employs design science research to develop a problem-oriented framework for domain adaptation, which is matured in three evaluation episodes. We describe a framework that distinguishes between five domain adaptation scenarios, provides recommendations for addressing each scenario, and offers guidelines for determining if a problem falls into one of these scenarios. During the multiple evaluation episodes, the framework is tested on artificial and real-world datasets and an experimental study involving 100 participants. The evaluation demonstrates that the framework has the explanatory power to capture any domain adaptation problem effectively. In summary, we provide clear guidance for researchers and practitioners who want to employ domain adaptation but lack in-depth knowledge of the possibilities.
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