题目如下：
Forbes magazine publishes every year its list of billionaires based on the annual ranking of the world's wealthiest people. Now you are supposed to simulate this job, but concentrate only...
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其他好文 时间：
2015-07-23 13:55:22
阅读次数：
112
一、Rank ScoresWrite a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the nex...
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数据库 时间：
2015-07-17 20:51:36
阅读次数：
156
Kaggle Competition Past SolutionsWe learn more from code, and from great code. Not necessarily always the 1st ranking solution, because we also learn ...
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其他好文 时间：
2015-07-11 21:19:21
阅读次数：
316
例子：
SET?@ranking=0;
select?*,@ranking:=@ranking+1?AS?`ranking`?from?table?ORDER?BY?`members`?DESC; 1. 先给用户变量 @ranking 赋值，mysql中用户变量以@开头，不用事先申明； 2. 然后按照某...
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数据库 时间：
2015-06-09 17:55:01
阅读次数：
165
Rank ScoresWrite a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the next ...
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数据库 时间：
2015-06-08 00:58:48
阅读次数：
219
题目要求对数据分别按照地区、全区排名，并且按照名字顺序输出。
我们可以建立一个Person结构体，存储ID、分数、地区号、地区排名。
题目的难点主要在于排名算法和地区、全区分别排名，下面分别讨论。...
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其他好文 时间：
2015-06-02 22:00:42
阅读次数：
150
Write a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the next ranking number should be the next consecutive integer value. ...
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数据库 时间：
2015-05-24 08:53:01
阅读次数：
186
Learning to Rank(简称LTR)用机器学习的思想来解决排序问题。Ranking SVM算法是PairWise方法的一种。本文简单介绍了Ranking SVM，并举例说明了下载使用的过程。...
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其他好文 时间：
2015-05-16 11:56:37
阅读次数：
377
题目Write a SQL query to rank scores. If there is a tie between two scores, both should have the same ranking. Note that after a tie, the next ranking number should be the next consecutive integer value....
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其他好文 时间：
2015-04-21 18:05:04
阅读次数：
182
从4月21日起，我们将扩展我们的移动友好算法作为排名机制。这将会影响所有语系的移动搜索，这将会标志性的影响我们的搜索结果。（Starting April 21, we will be expanding our use of mobile-friendliness as a ranking signal. This change will affect mobile searches in all languages worldwide and will have a significant impact ...
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移动开发 时间：
2015-04-13 14:40:15
阅读次数：
219
