2023美国大学生数学建模C题模型分析思路代码

本次比赛题目在分析之后，英文版。本次美赛数学建模，c和e难度相当，应该是最好入手的两道题了，也比较适合小白来做。简单给大家分析一下E题。完整689572194
做这道题大体的框架，我们应该要明白。第一个我们需要开发一个模型解释报告结果的变化规律：
1.明确报告结果的数量与时间的关系
2.采用分段函数，使用线性拟合模型，得到具体的关系式子

3.验证模型的准确性，进行误差分析，作图
4.对2023年3月1日报告进行预测
第二点，关于单词的属性我们需要注意以下几点：
1.具体定义，按照单词的类型定义即可
2.按照单词的属性对数据分类
3.引入统计模型，统计不同单词类型下的频率直方图
4.描述结论
写论文的时候也按照这个模板来写就可以了。
问题一：
为了探究报告结果数量与时间的关系，我们可以对他进行作图描述。以时间为自变量，结果为因变量，来进行函数的拟合。进行验证模型的误差分析，检验模型的准确性。
C: Predicting Wordle Results
Image: nytco.com[1]
Background
Wordle is a popular puzzle currently offered daily by the New York Times. Players try to solve the puzzle by guessing a five-letter word in six tries or less, receiving feedback with every guess.
For this version, each guess must be an actual word in English. Guesses that are not recognized as words by the contest are not allowed. Wordle continues to grow in popularity and versions of the game are now available in over 60 languages.
The New York Times website directions for Wordle state that the color of the tiles will change after you submit your word. A yellow tile indicates the letter in that tile is in the word, but it is in the wrong location. A green tile indicates that the letter in that tile is in the word and is in the correct location. A gray tile indicates that the letter in that tile is not included in the word at all (see Attachment 2)[2].  Figure 1 is an example solution where the correct result was found in three tries.
Figure 1: Example Solution of Wordle Puzzle from July 21, 2022[3]
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Players can play in regular mode or “Hard Mode.” Wordle’s Hard Mode makes the game more difficult by requiring that once a player has found a correct letter in a word (the tile is yellow or green), those letters must be used in subsequent guesses. The example in Figure 1 was played in Hard Mode.
Many (but not all) users report their scores on Twitter. For this problem, MCM has generated a file of daily results for January 7, 2022 through December 31, 2022 (see Attachment 1). This file in