-
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
-
简易学生管理系统
学生管理系统，该系统可以实现：新建学生名录，插入一名学生，删除一名学生，打印学生名录，退出。使用该系统时可以通过输入学生姓名和学号查询学生信息增添或删除学生信息。本程序通过数据结构中的链表这种结构得以实现该简易学生管理系统。
- 2022-02-26 00:31:01下载
- 积分：1
-
实验9 PWM输出实验
可以实验pwm输出实验，采用的是原子电路 ，使用STM32f103芯片(PWM output experimental atomic circuit)
- 2019-06-25 16:25:37下载
- 积分：1
-
自动定量给水装置
本自动定量给水装置采用STC12C5A60S2单片机作为核心元件，设计包括晶振电路、复位电路、液晶显示电路、按键电路、传感器电路、阀门开关电路等组成的能实现自动定量给水的硬件电路设计。结合程序的写入，通过按键设定水量，再由单片机控制阀门的开关以及接收传感器反馈的数据，该系统能完成自动定量给水要求。并且初始水量和出水量的设定值、实时出水量和剩余出水量都能很直观的显示在液晶显示屏上。整个系统在硬件和软件的完美结合中实现了预期的功能。
- 2022-10-28 23:25:03下载
- 积分：1
-
骑士旅行问题
简单的关于n*n格子的骑士旅行问题
- 2022-12-11 16:05:04下载
- 积分：1
-
test
以c++和opencv为工具，通过摄像头捕捉到肤色区域，并跟踪，实现手势识别(In c++ and opencv as a tool, through the camera to capture color region and tracking, gesture recognition)
- 2013-08-28 09:10:47下载
- 积分：1
-
GPS-JUST-Trimble
GPS网平差计算核心代码，Trimble(GPS network adjustment calculation core code, Trimble)
- 2013-12-07 16:32:49下载
- 积分：1
-
mxc_v4l2_capture
基于V4L2架构完成视频采集，功能测试用(based on V4L2 for capturing video , for test camera capturing)
- 2020-10-12 23:37:32下载
- 积分：1
-
websocket 服务端以及客户端(c++源码)
【实例简介】c websocket
- 2021-05-24 08:46:53下载
- 积分：1
-
FreeOSEK_rel
OSEK源码文件，可供大家学习交流，多研究研究，对于嵌入式开发有帮助-RealTime Operation System
- 2022-12-25 06:10:04下载
- 积分：1
