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Kiichi ki-chi

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  • 06:23 (UTC +09:00)
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ki-chi / qp_notfd.py
Created June 21, 2014 16:38
OpenOptを使って二次計画法(Quadratic Problem)
#!/usr/bin/python
# -*- coding: utf-8 -*-
from openopt import QP
H = [[4, 1],
[1, 2]]
f = [1, 1]
Aeq = [1, 1]
beq = 1
@ki-chi
ki-chi / qp_fd_nomatrix.py
Created June 21, 2014 16:45
OpenOpt, FuncDesignerを使って二次計画法(ただし目的関数、制約条件に行列を使わない)
#!/usr/bin/python
# -*- coding: utf-8 -*-
import FuncDesigner as fd
from openopt import QP
x1, x2 = fd.oovars(2)
f = 2 * x1 ** 2 + x2 ** 2 + x1 * x2 + x1 + x2
startpoint = {x1: 0, x2: 0}
constraints = []
@ki-chi
ki-chi / qp_fd.py
Created June 21, 2014 16:49
OpenOpt, FuncDesignerを使って二次計画法(行列を使う)
#!/usr/bin/python
# -*- coding: utf-8 -*-
import FuncDesigner as fd
from openopt import QP
import numpy as np
x = fd.oovars(2)
H = np.array([[4, 1],
[1, 2]])
@ki-chi
ki-chi / nikkei225_crawler.py
Last active August 29, 2015 14:20
日経平均株価の日次データを取得するクローラー
#!/usr/bin/python
# coding: utf-8
# 日経平均資料室(http://indexes.nikkei.co.jp/nkave/archives/data)の日次データの差分をクロールして追加するプログラム
import urllib2
import lxml.html
import csv
import re
import time
from datetime import datetime as dt
@ki-chi
ki-chi / cluster_coef_for_unweighted_undirected_graph.py
Last active December 12, 2015 10:21
重み無し無向グラフのクラスター係数を隣接行列から求める
# -*- coding: utf-8 -*-
from __future__ import print_function
import numpy as np
# it's for unweighted and undirected graph.
# Adjency matrix of the graph
adjency_mat = np.array([[0, 1, 1, 1, 0, 0],
[1, 0, 1, 0, 0, 1],
[1, 1, 0, 1, 1, 0],
[1, 0, 1, 0, 1, 0],
@ki-chi
ki-chi / jsm2pandas.py
Created October 3, 2016 07:40
Convert instances of jsm into Pandas DataFrame.
import pandas as pd
import jsm
import datetime
def get_historical_price(stockcode, start_date=None, end_date=None):
q = jsm.Quotes()
if start_date is None or end_date is None:
jsm_data = q.get_historical_prices(stockcode)
else:
jsm_data = q.get_historical_prices(stockcode, jsm.DAILY, start_date, end_date, jsm.DAILY)
@ki-chi
ki-chi / matplotlib_hokkaido.ipynb
Created January 22, 2017 10:26
matplotlib_hokkaido.ipynb
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@ki-chi
ki-chi / num2int.py
Created January 24, 2017 13:58
The function for converting tricky-format digits
## Convert strings of 2-digits number have the following tricky format to an integer.
## Tricky format: the last digit is described as decimal, and the first digit is chosen from {1, ..., 9, A, ..., Z, a, ..., z}.
## The min is 0(="00") and the max is 619(="z9").
## Example: "15" -> 15, "A0" -> 100, "Z9" -> 359, "a0" -> 360, "c5" -> 385
def num2int(num):
if num.isdigit():
return int(num)
elif num[0].isupper():
return int(num[0], 36) * 10 + int(num[1])
# julia> versioninfo()
# Julia Version 1.5.0
# Commit 96786e22cc (2020-08-01 23:44 UTC)
# Platform Info:
# OS: macOS (x86_64-apple-darwin18.7.0)
# CPU: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
# WORD_SIZE: 64
# LIBM: libopenlibm
# LLVM: libLLVM-9.0.1 (ORCJIT, skylake)
import time
import numpy as np
import pandas as pd
def np_mode(df):
"""
与えられたDataFrameの各列から最頻値を返す
Original: https://twitter.com/nkay/status/1328231713919496194
"""