inverted hourglass

Music files are. lrc format, take a song as an example,[Ti: Hourglass of Memories][ar: Deng Zi chess][AL:G.E.M.][By:][offset:0][00:02.50] Memories of the hourglass-g.e.m. Deng Zi Qi[00:04.62] ci: Ting Zhu[00:05.72] Qu: g.e.m.[00:15.03] Puzzle piece lost[00:18.56] Like the indifference of the maple leaf[00:21.87] The clock on the wall[00:23.79] silently counting the loneliness[00:29.3] Coffee Fragrance[00:33

only a very reliable result, the correct rate is 100%, the recall rate is low. The F-metric is therefore introduced as follows: Back to the example, we obviously can no longer use the original way to create and store a term-document matrix, assuming that n = 1 million documents (1M), each with 1000 words (1K), each word has an average of 6 bytes (including spaces and punctuation), then all documents will occupy about 6GB space, Assuming that the size of the glossary (that is, the number of wo

This article reproduced from: http://www.cnblogs.com/forfuture1978/archive/2010/02/02/1661436.html, slightly censored and remarks.Iv. specific Format4.2. Reverse InformationThe reverse information is the core of the index file, which is the reverse index.The reverse index consists of two parts, the left is the dictionary (term Dictionary), and the right side is the inverted table (Posting list).In Lucene, these two parts are stored in the sub-file, th

As the name suggests, this chapter is about how to construct indexes, or how to efficiently construct index files for large datasets in limited memory and time. Once this index file is available, the index compression and index-based sorting have been discussed in the previous sections. Link List Let's take a look at the most common method to construct such a data structure in the memory, including a term dictionary, which can be implemented using arrays, hash tables, and binary search trees, e

Iv. Specific format 4.2. Reverse Information Reverse Information is the core of the index file, that is, reverse index. The reverse Index consists of two parts: the left side is the Dictionary and the right side is the inverted table (Posting List ). In Lucene, these two parts are stored in files, the dictionary is stored in tii and tis, And the inverted table contains two parts: the document number and wo

Implement a simple search engine with the go languageProject address is: Https://github.com/wyh267/FalconEngineInterested in the search engine can go to see this book, relatively shallow and more complete introduction of a search engine of all functions.My search engine raw data is the MySQL database, you can do two times according to the needs of development, to support other databases or local files, detail files are stored in the Redis database, the same part can be developed according to the

To modify a custom-sized desktop screen resolution on a ubuntu14.04 virtual machine, use the command:Cvt,xrandr0. First look at the resolution settings that are currently available: Xrandr-q[email protected]:/home/xxx/desktop# xrandr-qScreen 0:minimum 1 x 1, 1504 x 768, maximum 8192 x 8192Virtual1 Connected primary 1504x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm800x600 60.0 + 60.32560x1600 60.01920x1440 60.01856x1392 60.01792x1344 60

Modify the custom sized desktop screen resolution on the ubuntu14.04 virtual machine, using the command: Cvt,xrandr 0, first look at the currently available resolution settings: XRANDR-Q root@xxx:/home/xxx/desktop# Xrandr-qScreen 0:minimum 1 x 1, current 1504 x 768, maximum 8192 x 8192Virtual1 Connected primary 1504x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm800x600 60.0 + 60.32560x1600 60.01920x1440 60.01856x1392 60.01792x1344 60.01

I spent two nights yesterday. I finally figured it out, but now I still need to enter the desktop in safe mode. Otherwise, the screen will be white when I enter the user name. however, if you click the shutdown button and restart the shutdown button Based on the memory, you can restart or shut down the table. The Ubuntu8.04 version has many problems and the system is extremely unstable, I often open the window and wait for half a day without responding. Then I clicked the mouse to show the

Roger ". The source of this name is not clear. Some people think that it appeared from the end of the 17th to the beginning of the 18th century, and it was nothing else, but it was the French saying of the French term "Joli Ronge. The second speculation is that the name originated from the eastern waters and said the title "Ali Raja (Alibaba rajia)-the king of the sea ". The British read these two words as "Olly Roger" (OLE Roger ). This argument comes from the word "Roger", the beggars. The di

What is dark timeWhat is dark time? You walk, buy vegetables, wash your hands, take the bus, go shopping, travel, eat, sleep, all these times can be called "dark time." I understand that the dark time is to spend the time that I usually unconsciously, see that it has gone through the hours of full use up. These times in the eyes of the author can be used to think about problems, to chew and digest what you see and read at ordinary times. This period of time seems insignificant, but the accumulat

Today, I finished reading Liu weipeng's "dark time", which is really good. I was five years older than me, but I was able to learn so much. I learned from him and subscribed to his blog (mindhacks.cn), and he was also on Douban, You can take a look at the time. I believe you can also learn a lot of meaningful things from him like me. I don't need to talk much about it. Let's summarize what I learned. Every person's life is like an hourglass, and the t

of the table with the search keywords. If the two are the same, the search is successful; otherwise, the table is divided into two sub-tables by using the intermediate position record. If the keyword recorded in the intermediate position is greater than the search keyword, the previous sub-table is further searched, otherwise, search for the next sub-table. Repeat the preceding process until you find a record that meets the conditions to make the search successful, or until the child table does

This is a creation in Article, where the information may have evolved or changed. I think this title should be changed, I write down in fact is to tell you how to write a search engine, and did not involve too much golang things, I think this is also very good, familiar with the principle, with what implementation is actually not important, and said that the principle is more real than the code. The underlying data structures have been mentioned before, including

before you set up an inverted record table I. Coding of documents Generally, a file is stored in bytes, and if you want to make it readable, you have to convert it to characters by using the correct encoding; like Java io, if you do not have the correct encoding to open a file, there will be garbled. Therefore, it is important to know the encoding of the document before a series of processing steps. Typically, the encoding is saved in the Meta D

Document directory I have heard that "dark time" is a good book. Today I see a reading note and post-reading about "Dark Time". I feel very good. I will share some of the highlights of this article. I have heard that "dark time" is a good book. Today I see a reading note and post-reading about "Dark Time". I feel very good. I will share some of the highlights of this article. Each person's life is like an hourglass, where the total amount of sand

, that is, the hourglass arrow cursor: The cursor indicates that you can wait for a situation or continue to use the system. When another process is started, the CreateProcess function enables you to better control the cursor. When setStartf_forceonfeedbackC r e a t e p r o c e s does not change the cursor to an hourglass. Startf_forceonfeedbackAllows CreateProcess to monitor initialization of new processes

Author: Xingda Computer technology company (www.study01job.com) Guo Baoli It is important to provide feedback in a timely manner to the user's actions in the system, which may be just like a warning bell or a display of the mouse to an hourglass, but it can give the user confidence and make him feel that the software is still in control without crashing. The occasion of using feedback In the client/server environment, users can not tolerate the sys

usage, this does not affect normal use. Enterprise search: searches for internal documents, patent databases, and research papers. In this case, documents are often stored in a unified file system. One or more dedicated computers are complicated to search for them. The technology described in this book covers all of the above fields. However, the parallel and distributed searches in internet search systems are relatively less involved, because there are fewer papers on this aspect. However, in

First of all, in the bash script, there are three kinds of quotes 1. Single quotes '2. Double quotes "3. Inverted quotes ' Single quotation markThe two string enclosed in single quotes is an ordinary string that retains its original literal meaning.Double quotesTwo strings enclosed in double quotes, and some special characters will act on them.These special characters are: Dollar sign $, backslash \, inverted