seaslee

d = read.csv('a.csv', head=T, sep=',')
p <-unlist(d)
pt <- ts(p, frequency=12, start=c(2015))
plot(pt)
library(forecast)
fit <- auto.arima(pt)
forecast(fit, h=2)

seaslee

library(tm)

## read from txt file
path = 'd:/sigir_full.txt'
f <- file(path,open='rt')
con <- readLines(f)
close(f)

## get the tile from the content
paperTitles <- con[grepl("^Title: ",con)]

seaslee

####入门
1. [John Cook写的不错的关于R语言的一个基本介绍](http://www.johndcook.com/R_language_for_programmers.html)
2. [R 官方的入门手册](http://www.r-project.org/)
3. [电子书“The R Inferno”]
####ggplot
1. [Edwen Chen写的一个不错的入门，很简单的qplot的用法]http://blog.echen.me/2012/01/17/quick-introduction-to-ggplot2/)
2. [ggplot2的文档](http://docs.ggplot2.org/current/)
####规范
1. [Google's R Style Guide](http://google-styleguide.googlecode.com/svn/trunk/Rguide.xml#filenames)
2. [另一个简洁的R编码规范，ggplot2的作者](http://stat405.had.co.nz/r-style.html)

seaslee

# -*- coding:utf-8 -*-
from sklearn import datasets
from sklearn import linear_model
from sklearn.metrics import f1_score
##### load data and split into train and test ####
data_digits = datasets.load_digits()
data = data_digits.data
target = data_digits.target
train_ratio = 0.8
data_num = data.shape[0]

seaslee

#! /usr/bin/env python
# -*- coding:utf-8 -*-
from sklearn import datasets
from sklearn import linear_model
from sklearn.metrics import mean_squared_error
##### load data and split into train and test ####
data_boston = datasets.load_boston()
data = data_boston.data
target = data_boston.target
train_ratio = 0.8

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def imgs(imgsdir):
    for dirname, subdirnames, subfiles in os.walk(imgsdir):
        #subdir for each query of images
        for subdir in subdirnames:
            for dirname1, subdirnames1, subfiles1 in os.walk(os.path.join(dirname, subdir)):
                #each image in the directory of one query
                for img in subfiles1:
                    imgpath = os.path.join(dirname1, img)
                    yield imgpath

seaslee

# -*- coding: utf8 -*-

import csv
import os


def listimgs(metafilepath, imgfilepath, n):
    #metafilepath: the path of the meta info of result
    #n: the number of a query to generate the codebook

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def mkdir_p(path):
    try:
        os.makedirs(path)
    except OSError as exc: # Python >2.5
        if exc.errno == errno.EEXIST and os.path.isdir(path):
            pass
        else: raise

seaslee

X = X./( ones(size(X)) * diag(sum(abs(X))) ); %L1-normalization
X = X./( ones(size(X)) * sqrt(diag(diag(X'*X))) ); %L2-normalization

seaslee

%use in computer the lbp descriptor 
j = bitset(bitshift(i,1,samples),1,bitget(i,samples)) %rotate left; cyclic shift 
numt = sum(bitget(bitxor(i,j),1:samples)) %number of 1->0 and
                                               %0->1 transitions
                                               %in binary string 
                                               %x is equal to the
                                               %number of 1-bits in
                                               %XOR(x,Rotate left(x))