Index the data to elasticsearch

This simple search engine can only apply to the specific strutures of the data of articles and the users. So before you run the program, we need make sure that the data have the following structures.
Structure of user:

{
	"id": <id>, 
	"preferences": {<category1>: <hitcounts1>, <category2>: <hitcounts2>, ...}, 
	"search_history": {<query1>: [<docid1>, <docid2>, ...], ...}
}

Structure of article:

{
    "name" : <name>,
    "id" : <value>,
    "text" : <article text>,
    "categories" = [
        <cat1>, <cat2>, <cat3> ...
    ]
}

Run the following command to create a record of user with id of 5:

curl -XPOST 'http://localhost:9200/users/user/5' -H'Content-Type: application/json' -d'
{
	"id":5, 
	"preferences": {}, 
	"search_history": {}
}'

Run the following command to index data of articles to elasticsearch:

If you already have indices called 'articles' and 'users', you may need to delete them with the following commands before indexing new data:

curl -XDELETE 'localhost:9200/articles'  // Delete the index of articles

curl -XDELETE 'localhost:9200/users'  // Delete the index of users

Running

Make sure you start the elasticsearch server before you run the search engine. Run the following command to launch the GUI:

python se_main.py

Introduction to the GUI

No.	Function
1	Choose the algorithm you want to use for re-ranking here.
2	Turn on/off the update function here.

No.	Function
1	Input the query words here and click 'Go' to start a query.
2	The ranked search results will be displayed here, click a certain result to check the detailed information.
3	The detailed information including text and categories of the clicked result will be shown here.
4	The running logs of the search engine will be shown here.