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简介和一般问题陈述

Introduction and General Problem Statement
课程网址: http://videolectures.net/icml09_seeger_igps/  
主讲教师: Seeger Matthias W
开课单位: 洛桑联邦理工学院
开课时间: 2009-08-26
课程语种: 英语
中文简介:
大多数机器学习(ML)算法从根本上依赖于数值数学的概念。黑盒计算原语的标准缩减通常不能满足实际需求,必须在所有级别进行修改。ML问题日益复杂,需要分层的方法,其中算法是组件,而不是单独的工具,需要大量的人力。在这种现代环境下,算法的可预测运行时和数值稳定性行为成为基础。不幸的是,ML研究人员如今普遍忽略了这些方面,这限制了ML算法在复杂问题上的适用性。背景和目标:我们的讲习班旨在解决这些缺点,试图提炼出黑匣子减少不足和高度参与的完整数值分析之间的折衷方案。我们将邀请对*数字方法*和*接近机器学习的应用中的实际问题感兴趣的演讲者。虽然将指出ML感兴趣的数字软件包,但我们的重点将是如何最好地弥合ML需求和这些计算库之间的差距。次要目标是解决并行数值计算在ML中的作用。基于数值方法的机器学习示例包括低级计算机视觉和图像处理、非高斯近似推理、高斯滤波/平滑、状态空间模型、核方法的近似等。影响和预期结果,我们将呼吁社会关注算法设计和实现中越来越关键的数值考虑问题。需要一套在ML中使用和修改数值软件的基本规则,为本次研讨会打下基础。这些努力应该使人们认识到这些问题,并增加对高效和稳定的ML实现的关注。我们将鼓励演讲者指出有用的软件包及其注意事项,要求他们关注ML感兴趣的示例。提高对数值机器学习算法和原语的稳定性和可预测运行时行为日益重要的认识。建立一个行为准则,以便为机器学习问题最佳选择和修改现有的数值数学准则。了解当前数字数学的发展,这是大多数机器学习方法的主要支柱。
课程简介: Most machine learning (ML) algorithms rely fundamentally on concepts of numerical mathematics. Standard reductions to black-box computational primitives do not usually meet real-world demands and have to be modified at all levels. The increasing complexity of ML problems requires layered approaches, where algorithms are components rather than stand-alone tools fitted individually with much human effort. In this modern context, predictable run-time and numerical stability behavior of algorithms become fundamental. Unfortunately, these aspects are widely ignored today by ML researchers, which limits the applicability of ML algorithms to complex problems. Background and Objectives Our workshop aims to address these shortcomings, by trying to distill a compromise between inadequate black-box reductions and highly involved complete numerical analysis. We will invite speakers with interest in *both* numerical methodology *and* real problems in applications close to machine learning. While numerical software packages of ML interest will be pointed out, our focus will rather be on how to best bridge the gaps between ML requirements and these computational libraries. A subordinate goal will be to address the role of parallel numerical computation in ML. Examples of machine learning founded on numerical methods include low level computer vision and image processing, non-Gaussian approximate inference, Gaussian filtering / smoothing, state space models, approximations to kernel methods, and many more. Impact and Expected Outcome We will call the community's attention to the increasingly critical issue of numerical considerations in algorithm design and implementation. A set of essential rules for how to use and modify numerical software in ML is required, for which we aim to lay the groundwork in this workshop. These efforts should lead to an awareness of the problems, as well as increased focus on efficient and stable ML implementations. We will encourage speakers to point out useful software packages, together with their caveats, asking them to focus on examples of ML interest. Raising awareness about the increasing importance of stability and predictable run-time behaviour of numerical machine learning algorithms and primitives. Establishing a code of conduct for how to best select and modify existing numerical mathematics code for machine learning problems. Learning about developments in current numerical mathematics, a major backbone of most machine learning methods.
关 键 词: 机器学习; 最大似然算法; 计算机视觉; 图像处理
课程来源: 视频讲座网
最后编审: 2019-12-07:lxf
阅读次数: 44