Original: http://3dobe.com/archives/44/IntroductionIt is impossible to do search technology without touching the word breaker. The reason why the search engine can not be replaced by the database mainly has two points, one is in the large amount of
The sort command's function is to sort the rows in a file. The sort command has a number of very useful options, which were initially used to sort through various sorts of file contents in a database format. In fact, the sort command can be
There are many sorting algorithms, so it is important to use which algorithm in a particular scenario. In order to select the appropriate algorithm, the following criteria can be considered in the suggested order:
(1) Execution time
(2) Storage
Index of the search engine1. Word--Document matrixThe word-document matrix is a conceptual model of the inclusion relationship between the two, and figure 3-1 shows its meaning. Each column in Figure 3-1 represents a document, each line represents a
The Sort command sorts all rows in the file. The Sort command has many very useful options, which were initially used to Sort the file content in the database format. In fact, the Sort command can be considered as a very powerful data management
Linux sorting command sort-Linux general technology-Linux technology and application information. The following is a detailed description. The sort command sorts all rows in the file. The sort command has many very useful options, which were
Java version of the spark large data Chinese word segmentation Statistics program completed, after a week of effort, the Scala version of the spark
Large data Chinese Word segmentation Statistics program also got out, here to share to you want to
Function Description: Sort the contents of the text file.
Syntax: Sort [-bcdfimmnr][-o][-t][+-][--help][--verison][file]
Supplemental Note: Sort can be sorted against the contents of a text file in units of behavior.
Parameters
-B ignores the
Implement the following sortInsert sort O (n^2)
Bubble sort O (n^2)
Select Sort O (n^2)
Quick Sort O (n log n)
Heap sort O (n log n)
Merge sort O (n log n)
Hill sort O (n^1.25)
1. Insert sort O (n^2)
In general, the insertion sort is
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