R软件题目求指点

ywglz · 发表于 2012-5-10 05:03:16

> data
year survive total    faculty sex f.faculty f.sex
1  1938    18 22 medicine men medicine men
2  1939    16 23 medicine men medicine men
3  1940    7 17 medicine men medicine men
4  1941    12 25 medicine men medicine men
5  1942    24 50 medicine men medicine men
6  1943    16 21 medicine men medicine men
7  1944    22 32 medicine men medicine men
8  1945    12 14 medicine men medicine men
9  1946    22 34 medicine men medicine men
10 1947    28 37 medicine men medicine men
11 1938    16 30       arts men       arts men
12 1939    13 22       arts men       arts men
13 1940    11 25       arts men       arts men
14 1941    12 14       arts men       arts men
15 1942    8 12       arts men       arts men
16 1943    11 20       arts men       arts men
17 1944    4 10       arts men       arts men
18 1945    4 12       arts men       arts men
19 1946    3    9       arts men       arts men
20 1947    13 23       arts men       arts men
21 1938    9 14    science men    science men
22 1939    9 12    science men    science men
23 1940    12 19    science men    science men
24 1941    12 15    science men    science men
25 1942    20 28    science men    science men
26 1943    16 21    science men    science men
27 1944    25 31    science men    science men
28 1945    32 38    science men    science men
29 1946    4    5    science men    science men
30 1947    25 31    science men    science men
31 1938    10 16 engineering men engineering men
32 1939    7 11 engineering men engineering men
33 1940    12 15 engineering men engineering men
34 1941    8    9 engineering men engineering men
35 1942    5    7 engineering men engineering men
36 1943    1    2 engineering men engineering men
37 1944    16 22 engineering men engineering men
38 1945    19 25 engineering men engineering men
39 1946    17 30 engineering men engineering men
40 1947    25 35 engineering men engineering men
41 1938    14 19       arts women       arts women
42 1939    11 16       arts women       arts women
43 1940    15 18       arts women       arts women
44 1941    15 21       arts women       arts women
45 1942    8    9       arts women       arts women
46 1943    13 13       arts women       arts women
47 1944    18 22       arts women       arts women
48 1945    18 22       arts women       arts women
49 1946    1    1       arts women       arts women
50 1947    13 16       arts women       arts women
51 1938    1    1    science women    science women
52 1939    4    4    science women    science women
53 1940    6    7    science women    science women
54 1941    3    3    science women    science women
55 1942    4    4    science women    science women
56 1943    8    9    science women    science women
57 1944    5    5    science women    science women
58 1945    16 17    science women    science women
59 1946    1    1    science women    science women
60 1947    10 10    science women    science women

用加性模型（additive model)  Are the proportions of graduates who survived for 50 years after
graduation the same all years of graduation?

2 Are the proportions of male graduates who survived for 50 years after
graduation the same for all Faculties?

abc886y365hxg · 发表于 2012-5-10 23:01:39

year是代表毕业日期
survive代表现在的存活人数
total 代表那一年总共毕业的人数吗？

ywglz · 发表于 2012-5-10 23:43:50

abc886y365hxg 发表于 2012-5-10 23:01
year是代表毕业日期
survive代表现在的存活人数
total 代表那一年总共毕业的人数吗？

the column labelled \survive" contains the number of graduates who survived
and the column labelled \total" contains the total number of graduates

abc886y365hxg · 发表于 2012-5-11 00:26:09

where are you from?
What is the meaning of the column labelled '\year'?

ywglz · 发表于 2012-5-11 06:54:00

abc886y365hxg 发表于 2012-5-11 00:26
where are you from?
What is the meaning of the column labelled '\year'?

The data show the survival 50 years after graduation of men and women who gradu-
ated each year from 1938 to 1947 from various Faculties of the University of Adelaide.

abc886y365hxg · 发表于 2012-5-11 19:09:49

Maybe this will help you!
http://www.xiaowanxue.com/up_files/201218192445.html

I just know a little about R.

su2005 · 发表于 2012-5-28 21:40:18

累加模型(Additive models)。这种技术期望可以通过决定变量的平滑累加函数
（smooth additive function）构建回归函数。一般来说，每个决定变量都有一个
平滑累加函数。用户捐献的包acepack 里面的函数avas 和ace 以及包mda 里
面的函数bruto 和mars 为这种技术提供了一些例子。这种技术的一个扩充是用
户捐献包gam 和mgcv 里面实现的广义累加模型。

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