Boolean Logic

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest Cloud host Technology Hall I engaged in search engine related work has been 11 years, Today we talk about search engine core algorithm: Natural language and Boolean search. The discussion leads to the following conclusion: Search crawler and search engine use some heuristic method to rank the page, and return the result. Crawler observation mode to determine the content of a Web page, search ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest Cloud host technology lobby search engine basically support additional logic command query, commonly used is" + "and"-"number, or Boolean (Boolean) logical commands and, or, and not. Using these command symbols can greatly improve our search accuracy. Compare the meanings of the following search terms: C ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall often internet people for search engines are not unfamiliar, But when it comes to using, do you have the ease or the knack? Everything is fastidious about a skill, search engine is no exception. If you want to fully understand the use of search engine skills, may not read the following article carefully, I believe you will be able to benefit from the reading after the light ...

Blog Description: 1, research version hbase 0.94.12;2, posted source code may be cut, only to retain the key code. 　　Discusses the HBase write data process from the client and server two aspects. One, client-side 1, write data API write data is mainly htable and batch write two API, the source code is as follows://write the API public void to put ("final") throws IO ...

Hadoop RPC communication is different from other systems RPC communication, the author for the use of Hadoop features, specifically designed a set of RPC framework, the framework of personal feeling is still a little complicated. So I'm going to split into client-side and Server service-side 2 modules for analysis. If you have a good understanding of RPC's entire process, you must be able to understand it very quickly for Hadoop RPC. OK, let's cut to the chase. The related code for the RPC of Hadoop is ORG.APAC ...

We believe that the goal-oriented design method consists of 4 p, i.e. process, pattern, principles, practices (processes, patterns, principles, practices), and I will discuss the first 3 p. Interaction design is generally a difficult and messy task, and interaction designers are often asked to imagine and define in a tight schedule a possible use of the latest technology, and no one has seen, we must have a deep understanding of the complex areas of products, must balance the competitive priorities, Must understand the constraints of the technology used and the machine ...

This article is my second time reading Hadoop 0.20.2 notes, encountered many problems in the reading process, and ultimately through a variety of ways to solve most of the. 　　Hadoop the whole system is well designed, the source code is worth learning distributed students read, will be all notes one by one post, hope to facilitate reading Hadoop source code, less detours. 1 serialization core Technology The objectwritable in 0.20.2 version Hadoop supports the following types of data format serialization: Data type examples say ...

In 1948, Allen Turing, the father of computer science, and Claude Shannon, the father of information science, independently developed the basic algorithms still used in today's chess programs.

The Jvax (JSON Verification and conversion/transformation) system processes all incoming requests before the cloud service receives an incoming request. Jvax is designed to handle various http://www.aliyun.com/zixun/aggregation/17253.html "> common problems" that occur when using JSON as a payload for API requests. This paper proposes a solution ...

Double quotes ("") for the keyword to be queried with double quotes (half-width, and other symbols to be added with this), you can achieve accurate query, this method requires the query result to exact match, does not include the evolution form. 　　Use the plus sign (+) to use the plus sign in front of the keyword, which tells the search engine that the word must appear on the page in the search results. 　　Using a minus sign (-) to use a minus sign in front of the keyword means that the keyword cannot appear in the query results. Wildcard characters (* and?) ...