機械学習した結果から予測をHTTPで返す仕組みの一例 ref: http://qiita.com/mix_dvd/items/5d62a7786d823a4ad411

CallbackServer.py

#!/usr/local/bin/python
# coding: utf-8

import requests
import http.server
import socketserver
from http.server import BaseHTTPRequestHandler
from urllib.parse import urlparse, unquote

def start(port, callback):
    def handler(*args):
        CallbackServer(callback, *args)
    server = socketserver.TCPServer(('', int(port)), handler)
    server.serve_forever()

class CallbackServer(BaseHTTPRequestHandler):
    def __init__(self, callback, *args):
        self.callback = callback
        BaseHTTPRequestHandler.__init__(self, *args)

    def do_GET(self):
        parsed_path = urlparse(self.path)
        query = unquote(parsed_path.query)

        self.send_response(200)
        self.end_headers()

        result = self.callback(query)

        self.wfile.write(result.encode('utf-8'))

        return

file2.sh

$ chmod a+x server.py
$ ./server.py 8080 &

file4.sh

$ ruby test.rb
旅費交通

server.py

#!/usr/local/bin/python
# coding: utf-8

import sys
import CallbackServer

import pandas as pd
import numpy as np

homedir = "/home/scripts/"
filename = "data/code.csv"

df = pd.read_csv(homedir + filename, header=None)
df.index = df.pop(0)

df_rs = df.pop(1)

from sklearn.externals import joblib

scaler = joblib.load(homedir + 'data/scaler.pkl')
clf = joblib.load(homedir + 'data/clf.pkl')
vect = joblib.load(homedir + 'data/vect.pkl')

from janome.tokenizer import Tokenizer

t = Tokenizer()

def callback_method(query):
    texts = [
        query,
    ]

    notes = []
    for note in texts:
        tokens = t.tokenize(note)
        words = ""
        for token in tokens:
            words += " " + token.surface
        notes.append(words)

    X = vect.transform(notes)

    result = clf.predict(X)
    ans = ""

    for i in range(len(texts)):
        ans = df_rs.ix[result[i]]

    return ans

if __name__ == '__main__':
    port = sys.argv[1]
    CallbackServer.start(port, callback_method)

test.rb

require 'net/http'
require 'uri'

puts Net::HTTP.get_print('localhost', URI.escape('/?高速道路利用料'), 8080)