Fitting (special modeling)

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Fitting (special modeling). 预习 BR2003, Chap. 6. 董小波 2009.11.18. Schematic. The role of data analysis. On the learning of curve fitting. 分清三种性质的学习内容: 原理性 技术性 / 方法性 操作性 由于选课同学层次弥散极大,请各人根据不同的阶段、个人不同的需求等,给予不同的学习时间权重。 在 独观大略 与 惟务精纯 之间平衡. 3. 想象力 与 数据分析 之间的平衡. - PowerPoint PPT Presentation

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  • Fitting (special modeling)2009.11.18BR2003, Chap. 6

  • SchematicThe role of data analysis

  • On the learning of curve fitting/

  • 3.

  • Anyway, data are necessary.Data! Data! He cried impatiently,I cant make bricks without clay.--- , Conan DoyleThen,The science and art of data handling and decision making: Data Analysis

  • vs.[] BTW, even a possibility()

  • E.g., then, what is the origin of the quantum uncertainty? Unknown to us still.:Anyway, what we concern in this course:

  • Curve fittingStep 1: /Step 2: e.g., Step 3: Our goal:Grasp and practice general data analysis in one semester (60hrs).

  • Overview of Chap.6Focused on Subsection 6.2 specifically, careful only for ``Method of Maximum Likelihood.To glance over Subsection 6.3To read ``Chisq Probability (p.108) and ``Uncertanties in the Parameters (p.109) [Note: actually, nobody bothers to estimate the Uncertanties in the Parameters using the formal error propagation equation.]To skip other sections if you have no time/interest.

  • Only one thing in this Chapter you should understandMaximizing the likelyhood minimizing zz(a,bzchi^2)

  • For the next classRead in advance chapter 7.Pay much time to finish the case, see: ftp://210.45.66.48/teaching/methods09/Course_Notes_and_Homeworks/fitting/ or http://ustcastroph.blog.sohu.com/#tp_95a1b1f5a7a Advice: practice is more important than reading.

  • 0.450.82092MgII 2800AFWHMEW3000A[ L3000= 3000A * L_lambda(3000) ]MEddington ratioL/Ledddata_for_spearman.txtEW(MgII)L3000, FWHM, M, L/LeddSpearmanCase discussion Today