Input analysis:
Files processed in mahout must be in sequencefile format. Therefore, txtfile must be converted to sequencefile, and clustering must be in vector format. mahout provides the following two commands to convert text to Vector Form.
1. mahout seqdirectory: converts a text file to a sequencefile. A sequencefile is a binary key-Value Pair stored in binary format. The corresponding source file is Org. apache. mahout. text. sequencefilesfromdirectory. java
2. mahout seq2sparse: Convert sequencefile to a Vector file. The source file is org. Apache. mahout. vectorizer. sparsevectorsfromsequencefiles. java.
Output Analysis: view the result
Mahout seqdumper: converts the sequencefile file into readable text. The corresponding source file is org. Apache. mahout. utils. sequencefiledumper. java.
Mahout vectordump: converts a Vector file into readable text. The source file is org. Apache. mahout. utils. vectors. vectordumper. java.
Mahout clusterdump: analyze the output result of the final cluster. The source file is org. Apache. mahout. utils. Clustering. clusterdumper. java.
For details about how to use each command and how to select parameters, you can add-H or-help after the command line, for example, view mahout seqdumper-H, in this terminal, the detailed Parameter options and descriptions are listed.
The most important thing is to read the source code of these commands to see how they are implemented so that they can be flexibly applied to their own applications.