送交者: wasqaz 于 2009-05-30, 16:28:09:

回答: 什么是“好”？什么是“差”？得有个定义才好说话 由 wasguru 于 2009-05-30, 16:24:09:

• Gauss-Markov定理并不要求误差为高斯分布。 - wasguru (66 bytes) 2009-05-30, 16:35:33 (331328)
  • 用什么方法当然决定于什么误差怎么分布 - wasqaz (581 bytes) 2009-05-30, 16:49:37 (331333)
    • 当然不是数学简单这么简单 - wasguru (50 bytes) 2009-05-30, 17:00:48 (331338)
      • 跟他开玩笑没看出来？ - wasqaz (15 bytes) 2009-05-30, 17:02:51 (331340)
    • 你就不会多读一句？ - wasguru (23 bytes) 2009-05-30, 16:54:02 (331334)
      • 这算我没想到，不过不影响论点 - wasqaz (18 bytes) 2009-05-30, 16:57:41 (331336)
        • the errors have expectation zero and are uncorrelated and have equal variances - wasqaz (113 bytes) 2009-05-30, 17:01:37 (331339)
          • 这个条件连非对称r.v..都能满足,怎么会和高斯分布等价? (无内容) - LaoXiao (0 bytes) 2009-05-30, 18:07:06 (331352)
            • 是么？<Xi>=0, <Xi Xj>=0 - wasqaz (90 bytes) 2009-05-30, 18:25:56 (331353)
              • Let {Xi} be any i.i.d. r.v. with finite 2nd moment, then ...... - LaoXiao (92 bytes) 2009-05-30, 20:50:43 (331369)
              • 有何不可？ - wasguru (100 bytes) 2009-05-30, 18:34:34 (331354)
                • 方差相等也是两个随机变量之间的关系 - wasguru (114 bytes) 2009-05-30, 18:53:11 (331359)
                • and have equal variances - wasqaz (25 bytes) 2009-05-30, 18:49:01 (331356)
          • 等价? 差远了去. (无内容) - LaoXiao (0 bytes) 2009-05-30, 17:58:08 (331351)
          • 当然不等价 (无内容) - wasguru (0 bytes) 2009-05-30, 17:04:08 (331341)

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