arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1206.4630cs.LG
收藏

结构化预测的有效分解学习

Efficient Decomposed Learning for Structured Prediction

Rajhans Samdani, Dan Roth

摘要:

结构化预测是若干机器学习应用的基石。不幸的是,在具有表达性变量间相互作用的结构化预测设置中,基于精确推理的学习算法(例如,结构SVM)通常是难以处理的。我们提出了一种新的方法,分解学习(DecL),它通过将推理步骤限制在结构化空间的有限部分来进行有效的学习。我们提供了基于结构,目标参数和黄金标签的特征,在此基础上,DecL等同于精确学习。然后,我们表明,在现实世界中,我们的理论假设可能不完全成立,基于DecL的算法是更有效的,准确的精确学习。

英文摘要:

Structured prediction is the cornerstone of several machine learning applications. Unfortunately, in structured prediction settings with expressive inter-variable interactions, exact inference-based learning algorithms, e.g. Structural SVM, are often intractable. We present a new way, Decomposed Learning (DecL), which performs efficient learning by restricting the inference step to a limited part of the structured spaces. We provide characterizations based on the structure, target parameters, and gold labels, under which DecL is equivalent to exact learning. We then show that in real world settings, where our theoretical assumptions may not completely hold, DecL-based algorithms are significantly more efficient and as accurate as exact learning.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑