Metadata is "data that provides information about other data". In other words, it is "data about data." Many distinct types of metadata exist, including
1. Descriptive metadata
2. Structural metadata
3. Administrative metadata
4. Reference metadata
5. Statistical metadata
1.Descriptive metadata is descriptive information about a resource. It is used for discovery and identification. It includes elements such as title, abstract, author, and keywords.
2.Structural metadata is metadata about containers of data and indicates how compound objects are put together, for example, how pages are ordered to form chapters. It describes the types, versions, relationships and other characteristics of digital materials.
3.Administrative metadata is information to help manage a resource, like resource type, permissions, and when and how it was created.
4.Reference metadata is information about the contents and quality of statistical data.
5.Statistical metadata, also called process data, may describe processes that collect, process, or produce statistical data.
Metadata allows users to access resources through
1.By allowing resources to be found by relevant criteria,
2.identifying resources,
3.bringing similar resources together, 4.distinguishing dissimilar resources,
5. giving location information.
Metadata of telecommunication activities including Internet traffic is very widely collected by various national governmental organizations. This data is used for the purposes of traffic analysis and can be used for mass surveillance.
meta content statement i.e. "meta content = metadata + master data".
If both the indexer and the searcher are guided to choose the same term for the same concept, then relevant documents will be retrieved." This is particularly relevant when considering search engines of the internet, such as Google. The process indexes pages then matches text strings using its complex algorithm; there is no intelligence or "inferencing" occurring, just the illusion thereof.
VideoEdit
Metadata is particularly useful in video, where information about its contents (such as transcripts of conversations and text descriptions of its scenes) is not directly understandable by a computer, but where efficient search of the content is desirable. This is particularly useful in video applications such as Automatic Number Plate Recognition and Vehicle Recognition Identification software, wherein license plate data is saved and used to create reports and alerts. There are two sources in which video metadata is derived: operational gathered metadata, that is information about the content produced, such as the type of equipment, software, date, and location; human-authored metadata, to improve search engine visibility, discoverability, audience engagement, and providing advertising opportunities to video publishers. In today's society most professional video editing software has access to metadata. Avid's MetaSync and Adobe's Bridge are two prime examples of this.
three main categories of metadata: Technical metadata, business metadata and process metadata. Technical metadata is primarily definitional, while business metadata and process metadata is primarily descriptive. The categories sometimes overlap.
Technical metadata defines the objects and processes in a DW/BI system, as seen from a technical point of view. The technical metadata includes the system metadata, which defines the data structures such as tables, fields, data types, indexes and partitions in the relational engine, as well as databases, dimensions, measures, and data mining models. Technical metadata defines the data model and the way it is displayed for the users, with the reports, schedules, distribution lists, and user security rights.
Business metadata is content from the data warehouse described in more user-friendly terms. The business metadata tells you what data you have, where they come from, what they mean and what their relationship is to other data in the data warehouse. Business metadata may also serve as a documentation for the DW/BI system. Users who browse the data warehouse are primarily viewing the business metadata.
Process metadata is used to describe the results of various operations in the data warehouse. Within the ETL process, all key data from tasks is logged on execution. This includes start time, end time, CPU seconds used, disk reads, disk writes, and rows processed. When troubleshooting the ETL or query process, this sort of data becomes valuable. Process metadata is the fact measurement when building and using a DW/BI system. Some organizations make a living out of collecting and selling this sort of data to companies - in that case the process metadata becomes the business metadata for the fact and dimension tables. Collecting process metadata is in the interest of business people who can use the data to identify the users of their products, which products they are using, and what level of service they are receiving.
In broadcast industry Edit
In broadcast industry, metadata is linked to audio and video broadcast media to:
identify the media: clip or playlist names, duration, timecode, etc.
describe the content: notes regarding the quality of video content, rating, description (for example, during a sport event, keywords like goal, red card will be associated to some clips)
classify media: metadata allows producers to sort the media or to easily and quickly find a video content (a TV news could urgently need some archive content for a subject). For example, the BBC have a large subject classification system, Lonclass, a customized version of the more general-purpose Universal Decimal Classification.
This metadata can be linked to the video media thanks to the video servers. Most major broadcast sport events like FIFA World Cup or the Olympic Games use this metadata to distribute their video content to TV stations through keywords. It is often the host broadcaster who is in charge of organizing metadata through its International Broadcast Centre and its video servers. This metadata is recorded with the images and are entered by metadata operators (loggers) who associate in live metadata available in metadata grids through software (such as Multicam(LSM) or IPDirector used during the FIFA World Cup or Olympic Games).
The BBC's Lonclass ("London Classification") is a subject classification system used internally at the BBC throughout its archives.
Lonclass and UDC codes use additional punctuation to express patterns of relationships and re-usable qualifiers.
allows new items to be expressed in terms of relationships between known items.
Multicam (LSM) is software developed by the Belgian company EVS Broadcast Equipment. Combined with its remote controller, it allows controlling the XT3 video server and offers highly reactive live editing solutions like instant replays and slow-motion.
This software and the production server allows broadcasters to record, control and play media. Originally developed for sports production, the XT is now present in nearly each OB van in all last big sportive events as FIFA World Cup, IFAF World Cup, MotoGP and Olympic Games and is actually used in the biggest studio broadcasts such as NBC, France 2, CCTV and many others.
The multicam LSM's features are Instant replay, slow-motion, High-motion, super motion, Rough cut, editing, video playlist and content management.
Combined with the remote controller, it allows users to instantly make clips of ingested media, review multiple camera angles and replay them at any speed between -400 and + 400% at a very high quality (HD or SD).
This software and its widely known controller have become a standard, as part of each OB Van in sport productions. The LSM name has been adopted as the name of the person in charge of making the slow-motion replays (LSM Operator) in countries other than the United States[citation needed]. Today, there are approximately 5,000 LSM operators in the world[citation needed].
In the United States, Germany and Norway, the LSM is commonly referred to as an EVS, and operators as EVS operators, despite the fact that EVS manufactures other products besides the LSM.
IPDirector is a suite of content management software developed by the Belgian company EVS Broadcast Equipment. The tool groups several video production management applications, providing ingest control and playout of video feeds from an accompanying video server.
The combination of software and production server allows broadcasters to record, control and play media. Furthermore, ingest control, workflow management, metadata management, 'rough cut' on-the-fly editing and playout control features are also included.
Originally developed for sports production, the XT3 is often found in Outside Broadcasting trucks covering many sporting events such as the FIFA World Cup, IFAF World Cup, MotoGP and Olympic Games. The product can also be found contributing to programmes from broadcasters including NBC, France 2, CCTV, BBC and others.
