-
TFIDF-master
tf–idf, short for term frequency–inverse document frequency, is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus.[1]:8 It is often used as a weighting factor in information retrieval and text mining. The tf-idf value increases proportionally to the number of times a word appears in the document, but is offset by the frequency of the word in the corpus, which helps to control for the fact that some words are generally more common than others.
Variations of the tf–idf weighting scheme are often used by search engines as a central tool in scoring and ranking a document s relevance given a user query. tf–idf can be successfully used for stop-words filtering in various subject fields including text summarization and classification.
One of the simplest ranking functions is computed by summing the tf–idf for each query term many more sophisticated ranking functions are variants of this simple model.
- 2014-02-23 09:01:44下载
- 积分：1
-
costas2
使用MATLAB 代码完成COSTAS环对QPSK调制的解调载波频率的跟踪(Use MATLAB code completion COSTAS loop tracking of QPSK modulation carrier frequency demodulation)
- 2015-09-07 18:34:08下载
- 积分：1
-
dashboard1.3L
汽车仪表程序 驱动步进电机，LCD段码式 燃油表，水温表，车速表，转速表(dashboard program)
- 2016-03-09 14:39:34下载
- 积分：1
-
pic 16f877a 液晶 lm35 带领 7 段
从 Lm35 读取的温度显示带领 7 段。显示 RTC、 报警、 智能家居
- 2022-02-04 14:12:43下载
- 积分：1
-
lvbo
首先进行滤波处理，然后进行小波分解······(wave filtering wavelet transform)
- 2017-04-07 09:19:27下载
- 积分：1
-
信息理论与编码 matlab 代码
信息理论是数字通信世界优秀部分。在 matlab 模拟他们强加在编码效率方面的挑战。这里是这样的我们将能够运行 Huffan 编码，和其他的代码的一些示例突出编码技术
- 2022-09-04 04:05:02下载
- 积分：1
-
PID仿真软件
pid算法 高精度pid算法模拟器，位置试，增量式，模糊pid(pidsuanfaergrgtrgrttrsrfrefgewgegv)
- 2018-03-22 17:09:41下载
- 积分：1
-
飞思卡尔XS128编写的双足竞步机器人程序源代码
这是自己参加ROBOCUP竞赛时候，编写的双足竞步机器人程序源代码，已经验证可以使用。主要使用芯片为FressScale XS128 16位单片机，采用PWM控制舵机转动角度。获得全国二等奖。
- 2022-09-17 16:30:02下载
- 积分：1
-
DSR源码
DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码DSR源码
- 2023-05-09 23:30:03下载
- 积分：1
-
draft-baset-tsvwg-tcp-over-udp-01
Abstract
We present TCP-over-UDP (ToU), an instance of TCP on top of UDP. It
provides exactly the same congestion control, flow control,
reliability, and extension mechanisms as offered by TCP. It is
intended for use in scenarios where applications running on two hosts
may not be able to establish a direct TCP connection but are able to
exchange UDP packets.
- 2012-12-12 17:20:56下载
- 积分：1
