ASD991936157-CSDN博客

原创对语料库的每一个句子的每一个单词加权重

包括预处理，使用tfidf加权重#!/usr/bin/env python# -*- coding: utf-8 -*-# created by fhqplzj on 2017/05/15 上午10:48import itertoolsimport reimport jiebafrom six.moves import xrangefrom sklearn.feature_ex

2017-08-10 10:45:45 1203

原创句子相似度计算的几种方法

雅可比相似度，余弦相似度，带tfidf的余弦相似度#!/usr/bin/env python# -*- coding: utf-8 -*-# created by fhqplzj on 2017/07/22 上午12:23import numpy as npfrom scipy.linalg import normfrom sklearn.feature_extraction.tex

2017-08-09 19:16:29 7531

原创 MiniBatchKMeans简单应用

MiniBatchKMeans比KMeans快很多，效果也不错，应用于文本聚类如下：#!/usr/bin/env python# -*- coding: utf-8 -*-from __future__ import print_functionimport loggingimport osimport refrom collections import defaultdict

2017-08-07 11:06:15 2464

原创 spark构建图graphx

import org.apache.spark.graphx.{Edge, Graph}import utility.Helpersimport scala.collection.mutable/** * Created by fhqplzj on 2017/7/20. */object SemanticNormalization { def word_count(s: S

2017-07-21 11:54:50 1463

原创基于协程的异步爬虫

基于tornado框架的异步爬虫小例子：#!/usr/bin/env python# -*- coding: utf-8 -*-# created by fhqplzj on 2017/07/19 下午5:48import loggingimport timefrom datetime import timedeltafrom urlparse import urljoin, ur

2017-07-19 19:44:49 616

原创 javascript版本的最长公共子序列

初学js，拿个lcs问题练练手：/** * Created by fhqplzj on 2017/7/15. */function lcs(s1, s2) { var m = s1.length, n = s2.length; var dp = new Array(m + 1); for (var i = 0; i < dp.length; i++) {

2017-07-15 11:16:29 957

原创带有xavier初始化、dropout的多层神经网络

#!/usr/bin/env python# -*- coding: utf-8 -*-# created by fhqplzj on 2017/07/07 下午3:22import randomimport matplotlib.pyplot as pltimport tensorflow as tffrom tensorflow.contrib.layers import xav

2017-07-08 15:25:37 957

原创 python猜数字游戏

无聊写个python猜数字游戏:#!/usr/bin/env python# -*- coding: utf-8 -*-# created by fhqplzj on 2017/06/23 下午12:18import randomimport stringimport timedef game(target): possibles = string.letters +

2017-06-27 19:55:58 580

原创 seq2seq模型

最近要做机器翻译，需要用到seq2seq模型。seq2seq由一个encoder和一个decoder组成，encoder和decoder实际上都是基于lstm的rnn模型。在decoder阶段，上一个cell的输出作为下一个cell的输入。

2017-06-20 16:13:00 618

原创单向RNN和双向RNN在mnist数据集上的分类实验

RNN用于图像分类思路很奇特，不明觉厉，具体可以参考相关论文，rnn和birnn的实验：#!/usr/bin/env python# -*- coding: utf-8 -*-# created by fhqplzj on 2017/06/19 下午10:28from __future__ import print_functionimport tensorflow as tffr

2017-06-20 10:20:46 1231

原创 simhash的python实现

import hashlibdef hash_str(s): md5 = hashlib.md5() md5.update(s) res = int(md5.hexdigest()[:16], base=16) return bin(res)[2:].zfill(64)def simhash(words, weights): words = ma

2017-03-23 23:04:33 1558

原创自动摘要提取python,textrank

# encoding=utf-8import jiebaimport networkx as nxfrom sklearn.feature_extraction.text import TfidfVectorizer, TfidfTransformerdef cut_sentence(sentence): """ 分句 :param sentence:

2017-03-10 22:29:27 7661 9

原创 python中文分句

# -*-coding=UTF-8-*-def cut_sentences(sentence): if not isinstance(sentence, unicode): sentence = unicode(sentence) puns = frozenset(u'。！？') tmp = [] for ch in sentence:

2017-03-10 18:46:32 5805 2

原创 TextRank算法

# -*-coding=UTF-8-*-import networkxfrom nltk.tokenize.punkt import PunktSentenceTokenizerfrom sklearn.feature_extraction.text import CountVectorizer, TfidfTransformerdocument = """To Sherlock Hol

2017-03-10 15:56:43 1183

原创 bulk批量建立索引python

# encoding=utf-8import elasticsearch.helpersfrom elasticsearch import Elasticsearchpath = '/home/fhqplzj/data/orion/news.json'es = Elasticsearch('localhost:9200')my_index, my_type = 'test_index'

2017-03-04 17:17:50 1267

原创 simhash实现

import com.clearspring.analytics.hash.MurmurHash/** * Created by fhqplzj on 17-3-1 at 下午6:07. */object Sim { def simHash(features: Array[String], weights: Array[Int]): Long = { val hist =

2017-03-01 18:19:42 1105

原创最长公共子序列算法

/** * Created by fhqplzj on 17-2-28 at 上午9:56. */object LongestCommonSubsequence { def LCS(s1: String, s2: String): (Int, String) = { val m = s1.length val n = s2.length val dp = Ar

2017-02-28 10:17:28 485

原创 numpy中的argsort

import numpy as npa = np.random.rand(10)print aindex_array = np.argsort(a)print a[index_array]

2017-02-26 11:01:07 479

原创 python代码ssh自动连接ubuntu

import getpassimport socketimport termiosimport sysimport tracebackimport ttyimport paramikofrom paramiko.py3compat import udef posix_shell(chan): import select oldtty = termios.t

2017-02-25 18:13:12 627

原创 python堆排序

import heapqdef heapsort(items): heap = [] for item in items: heapq.heappush(heap, item) return [heapq.heappop(heap) for _ in range(len(heap))]nums = [1, 3, 5, 7, 9, 2, 4, 6,

2017-02-25 13:13:29 644

原创 jieba分词python建立倒排索引

# encoding=utf-8import jsonimport jiebafrom sys import argvfrom collections import defaultdictpath = argv[1]objs = map(lambda s: json.loads(s), open(path).readlines())res = defaultdict(list)f

2017-02-25 10:36:54 4211

原创 elasticsearch简单例子

bool 搜索和 dis_max搜索的例子：Disjunction means or while conjunction means and.# encoding=utf-8from pprint import pprintfrom elasticsearch import Elasticsearches = Elasticsearch('localhost:9200')_in

2017-02-23 18:21:56 775

原创 elasticsearch搜索例子

# encoding=utf-8import jsonfrom elasticsearch import Elasticsearchfrom elasticsearch.helpers import scanes = Elasticsearch(hosts='10.52.66.31')def select(_index, _type, offset, limit, **kwarg

2017-02-23 16:08:49 516

原创完美打印JSON

package java2.format;import com.google.common.base.Strings;import com.google.common.collect.Lists;import org.apache.commons.io.FileUtils;import org.apache.commons.lang3.StringUtils;import java.

2017-02-23 15:39:10 978

原创 topk问题java实现

import com.google.common.base.Splitter;import com.google.common.collect.HashMultiset;import com.google.common.collect.Multiset;import com.google.common.primitives.Ints;import org.apache.commons.io

2017-02-18 22:01:29 1064

原创 guava的停表使用, Stopwatch

import com.google.common.base.Stopwatch;import java.util.concurrent.TimeUnit;/** * Created by fhqplzj on 17-2-16 at 下午9:57. */public class My4 { public static void main(String[] args) {

2017-02-16 22:13:14 5108

原创 ncut算法python实现

normalized cut算法python实现，只是针对二维数据点：# encoding=utf-8import numpy as npimport matplotlib.pyplot as pltfrom scipy import linalg as LAfrom sklearn.cluster import KMeansfrom sklearn.datasets import

2017-01-27 06:33:53 4691

原创清华大学　质因数的个数

import java.util.Scanner;/** * Created by fhqplzj on 17-1-26 at 下午5:16. */public class My10 { private static int getNum(int n) { int result = 0; while (true) { int

2017-01-26 17:58:27 426

原创清华大学　约数的个数

import java.util.Scanner;/** * Created by fhqplzj on 17-1-25 at 下午11:06. */public class My2 { private static int getNum(int n) { int result = 0; int i = 1; for (; i *

2017-01-25 23:15:06 326

原创清华大学　成绩排序

import java.util.ArrayList;import java.util.Scanner;/** * Created by fhqplzj on 17-1-25 at 下午10:19. */class Student { private int index; private String name; private int score;

2017-01-25 23:02:41 683

原创每天一段代码，签到

package tmpimport java.lang.management.ManagementFactory/** * Created by fhqplzj on 17-1-20 at 上午9:56. */object pro4 { val memory: Int = inferDefaultMemory() def inferDefaultCores(): Int

2017-01-20 10:07:35 1183

原创文本预处理，去除词频数为１的文档

package clustering.garbageimport java.io.PrintWriterimport org.apache.spark.SparkContext/** * Created by fhqplzj on 17-1-12 at 下午8:40. */object Lines { def main(args: Array[String]): Unit

2017-01-17 15:47:59 723

spark.master spark://master:7077spark.eventLog.enabled truespark.eventLog.dir hdfs://namenode:8021/directoryspark.serializer org.apache.spark.serializer.KryoSerializerspark.driver.memory 5gspark.execu

2017-01-16 22:14:35 9800

原创 csr_matrix计算tf

from scipy.sparse import csr_matrixdef tf(docs): """ As an example of how to construct a CSR matrix incrementally, the following snippet builds a term-document matrix from texts: :t

2017-01-11 21:58:30 1251

原创 python 谱聚类　幂迭代

紧接着上篇博文，实现了幂迭代聚类算法：# encoding=utf-8import numpy as npimport matplotlib.pyplot as pltfrom numpy import linalg as LAfrom sklearn.cluster import KMeansfrom sklearn.metrics.pairwise import rbf_kern

2017-01-10 20:17:04 1117

原创 python实现谱聚类，NJW算法

代码中有注释：# encoding=utf-8import matplotlib.pyplot as pltimport numpy as npfrom numpy import linalg as LAfrom sklearn.cluster import KMeansfrom sklearn.datasets import make_blobsfrom sklearn.metr

2017-01-10 16:05:10 7929 3

原创 soundex算法

def soundex(name, len=4): """ :type name:str :rtype:str :param name: :param len: :return: """ soundex_digits = '01230120022455012623010202' sndx = '' fc = ''

2017-01-08 20:41:43 2150

原创 python按照词典中的单词对一一替换

import reimport sixclass Xlator(dict): def _make_regex(self): return re.compile("|".join(map(re.escape, six.iterkeys(self)))) def __call__(self, match): return self[match.

2017-01-08 12:58:28 1968

原创 matplotlib设置默认参数和属性cycle

from cycler import cyclerimport numpy as npimport matplotlib.pyplot as pltplt.style.use('ggplot')x = np.linspace(0, 2 * np.pi)offsets = np.linspace(0, 2 * np.pi, num=4, endpoint=False)yy = np.t

2017-01-08 11:30:42 2828

原创 python画bar图

import numpy as npimport matplotlib.pyplot as pltplt.style.use('ggplot')logistic_regression = [ [184, 111, 76], [116, 80, 62], [15, 6, 3]]k_means = [ [274, 157, 106], [197, 1

2017-01-07 16:05:04 5545

算法技术与信息学竞赛

线性规划与网络流（ACM培训资料）

JAVA类的反射机制

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