计算数据中有多少不同长度的单词，例如，（8,1）（单词，长度）

Question

该函数应输出一对格式，并带有<“Length 8”，1>或<“Length 7”，1>或类似的例如<“8”，1>。

要获得Pig中字符串“theWord”的长度，您需要为每个单词使用SIZE函数。要将单词的大小与字符串“Length”连接起来，您需要为每个大小使用函数CONCAT。最后，我知道为了将一个整数转换为字符串以便将它与另一个字符串连接起来（CHARARRAY）。例如，我会使用“（CHARARRAY）SIZE（word）”。

我编写了代码，但是当我尝试转储数据时，它没有按照我的预期进行操作。我想我可能需要做一个计数功能，但我有点难过。

p1 = LOAD 'poems/input/Poem1.txt' USING TextLoader AS(line:Chararray);
p2 = LOAD 'poems/input/Poem2.txt' USING TextLoader AS(line:Chararray);
p3 = LOAD 'poems/input/Poem3.txt' USING TextLoader AS(line:Chararray);
p4 = LOAD 'poems/input/Poem4.txt' USING TextLoader AS(line:Chararray);
p5 = LOAD 'poems/input/Poem5.txt' USING TextLoader AS(line:Chararray);
p6 = LOAD 'poems/input/Poem6.txt' USING TextLoader AS(line:Chararray);
p = UNION p1, p2, p3, p4, p5, p6;
words = foreach p generate flatten(TOKENIZE(line , ' ,;:!?\t\n\r\f\\.\\-')) as word;
words_lower = foreach words generate LOWER(word) as word_lower;
words_unique = group words_lower by word_lower;
words_with_size = foreach words_unique generate SIZE(words_lower) as size, group;
words_with_size_concat = CONCAT words_with_count BY (CHARARRAY)size(words_lower) DESC, group;

Answer 1

我想到了！代码应该是这样的：

p1 = LOAD 'poems/input/Poem1.txt' USING TextLoader AS(line:Chararray);
p2 = LOAD 'poems/input/Poem2.txt' USING TextLoader AS(line:Chararray);
p3 = LOAD 'poems/input/Poem3.txt' USING TextLoader AS(line:Chararray);
p4 = LOAD 'poems/input/Poem4.txt' USING TextLoader AS(line:Chararray);
p5 = LOAD 'poems/input/Poem5.txt' USING TextLoader AS(line:Chararray);
p6 = LOAD 'poems/input/Poem6.txt' USING TextLoader AS(line:Chararray);
p = UNION p1, p2, p3, p4, p5, p6;
words = foreach p generate flatten(TOKENIZE(line , ' ,;:!?\t\n\r\f\\.\\-')) as word;
words_lower = foreach words generate LOWER(word) as word_lower;
words_length = foreach words generate CONCAT('Length ', (CHARARRAY)SIZE(word)) as word_length;
words_unique = group words_length by word_length 
words_with_count = foreach words_unique generate COUNT(words_length) as cnt, group;
words_with_count_sorted = ORDER words_with_count BY cnt DESC, group;
store words_with_count_sorted into 'poems/output/wordcount1';