Spatial Query Language

Based on MapReduce GML parallel query Xu Guan Hong The problem of massive spatial data query represented by the application of geo-markup Language (Geography Markup LANGUAGE,GML), A GML parallel Query method based on MapReduce is proposed. The query transformation of GML document query to GML spatial feature set query is realized by extracting GML spatial feature set, and the parallel query of spatial features is realized by MapReduce. Based on MapReduce ...

It can be said that big data is one of the hottest trends in the IT industry today, and it has spawned a new batch of technologies to deal with big data. And new technologies have brought the latest buzz words: acronyms, professional terms, and product names. Even the phrase "big data" itself makes a person dizzy. When many people hear "big data", they think it means "a lot of data", and the meaning of large data does not only involve the amount of data. Here are a few popular words that we think you should be familiar with, sorted alphabetically. ACID ...

It can be said that big data is one of the hottest trends in the IT industry today, and it has spawned a new batch of technologies to deal with big data. And new technologies have brought the latest buzz words: acronyms, professional terms, and product names. Even the phrase "big data" itself makes a person dizzy. When many people hear "big data", they think it means "a lot of data", and the meaning of large data does not only involve the amount of data. Here are a few popular words that we think you should be familiar with, sorted alphabetically. AC ...

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Information Times News (reporter Li Junyan Zhang Zhixu) Following the Ministry of Public Security, the propaganda department and other nine departments to combat the crackdown on Internet pornography special action 3 months later, the Ministry of Public Security and sword refers to obscene pornographic mobile phone sites.　　In fact, "play a pornographic card" or a web game advertising (also known as Web games) trick. "Want to and handsome fit, want to be more powerful", "Meimei Guild, Strong insertion", "grab girl craze, can't stand, 3 minutes of pleasure like tide" ... In recent days, in a hodgepodge of mop, Tianya and other well-known community forums, netizens set off a revealing "pornographic web game ads" frenzy, constantly mapping shelling ...

Skepticism is a double-edged sword. Without skepticism, IT managers might invest in software that is useless. Enough scepticism can allow IT departments to wait for enough evidence to prove that a particular platform can deliver good results. Data analysis of medical industry reaching critical mass data analysis has now reached a tipping point for the medical profession. Some vendors promise to provide better quality of care while reducing spending, but there is evidence that these claims are controversial. Similarly, critics of the big data movement point out that the healthcare industry is running ...

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In addition to the "Internet of Things" and "cloud computing", the IT industry has emerged a term-big data. Today, the big data has even aroused great concern in business and financial circles, and it is believed that large data will provide effective help for data application and decision support, and become the soul and inevitable development trend of Internet and cloud computing. Large data are not yet uniformly defined, and are often considered to be unstructured data with large amounts of data and diverse forms of data. Here we first understand a few concepts, structured data, semi-structured data, and unstructured data. Structured data can be in a relational database ...