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Metadata

Transcript: PB Core (or the Public Broadcasting Metadata Dictionary) is intended for use by television, radio and web broadcasters and aims to be a standard way of describing and using multimedia content (including video, audio and still image), allowing it to be more easily retrieved and shared among colleagues, software systems, institutions, community and production partners, private individuals . It can also be used as a guide for an archival or asset management process at an individual station or institution. As with other metadata PB Core can be incorporated to cover multimedia metadata within structures such as a METS record. PB Core is based on DC and organises its fifty three elements in 'containers', which in turn are organised in four classes. Using an existing standard can offer: Cost saving - you won't need to develop the schema, its usage guidelines or vocabularies yourself; Access to help and advice - a given standard is likely to have a community of users that has built up over time, which is likely to mean there will be comparatively easy access to help and advice about how best to use the standard. Usability - if your users are already familiar with your metadata structure or terminology they can more quickly and easily use your collection Resource discovery - your collection could be more easily opened up to be searched and shared by others; Sustainability - your use of common standards would make it easier to pass your collection on to someone else to look after if you ever need to ISO/TS 19139:2007 Geographic information - Metadeta - XML schema implemantation We have also more standarst used in many areas of life, e.g.: Dublin Core Metadata Element Set (DCMES) Visual Resources Association Core DDI - Archiving and Social Science EAD - Archiving Darwin Core - Biology MEI - Music notation RDF - Web resources MDDL - Financial market IEEE LOM Education CSDGM Geographic data ONIX Book industry Another main standard that should be included in this group is an ISO / TC 19139. It defines a method of recording ISO metadata in XML notation according to a specific pattern XSD. Its use is a necessity if the data May be published in catalogs metadata and properly in Internet Where is metadata kept? ISO 19119:2005 Geographic information - Services MPEG-7 is a multimedia metadata schema which can be used to provide rich descriptions of digital image, digital video or digital audio content. One key strength of MPEG-7 is the ability to segment time-based media and attribute different metadata to each part. Formally called the Multimedia Content Description Interface, the standard focuses on representing information about the content, and not the encoding of the content itself, as was the case with MPEG 1, 2 and 4 standards. Structured Metadata - standards and applications Metadata is usually structured in some way. Rather than randomly associating terms with the digital file, it is common to use a set of generic categories (e.g. 'Creator', 'Title', 'Subject') . Then assign specific terms within those categories (e.g. 'Creator: Leonardo da Vinci', 'Title: Mona Lisa', 'Subject: woman'). The example below relates to still image metadata. The word 'standard' can be problematic, since people use this term in different ways. Instead of adopting a narrow definition of 'standards', JISC Digital Media suggests that standards can be thought of as: - commonly used and consistently applied formats or processes, which are measurable, well documented, and endorsed by someone. We will generally talk about four categories: Example - a simple DC record Package metadata according to ISO 19115 The second kind of metadata might be called extrinsic or explicit metadata. Because this is created by humans, it is the most difficult and expensive metadata to create. But it is also usually the most important - especially to the end user. The advice documents in this series are mostly concerned with creating and managing explicit metadata. Dublin Core Standard Why use existing standards? ISO standard 19115, Geographic Information—Metadata Example in XML The Visual Resources Association Core (VRA) is a widely used metadata schema for describing works of visual culture and their associated images. It takes its name from its developing body: the Visual Resources Association, which is a US based association of visual resource librarians and associated image media professionals. VRA Core can be seen as an extension of DC aimed specifically at visual resources. Where does metadata come from? The most important standard that can be assigned to a group of standards for metadata catalogs is ISO 19119. It applies generally all geospatial services, including metadata catalogs. This standard identifies and defines the reference architecture geoinformation services, their interfaces used for geographic information and defines relationships to model open systems environment. The term "meta" comes from a Greek word that denotes something of a higher or more

Metadata

Transcript: Facebook photo upload Simple definition: Metadata is the data of data. Descriptive definition: Metadata describes data; it is the labels attached to data that can be used to identify a specific piece of data You might not realize what data is out there and how it can be used against you Let's take a look at the metadata from an email: What information can it tell me? David Petraeus, Director of the CIA The United States government began a bulk collection of metadata under president Bush in 2001 The NSA gave it the code name Stellar Wind The NSA's collection of metadata grew under the Obama administration How it could affect you? Case Studies Zack Killam, Kevin Hale, and Stephaine Abdullah Sender's name, email and IP address Recipient's name and email address Server transfer information Date, time and timezone Unique identifier of email and related emails Content type and encoding Mail client login records with IP address Mail client header formats Priority and categories Subject of email Status of the email Read receipt request Metadata Metadata Companies use your online metadata to try and advertise their products to you directly Metadata and the government: NSA collection https://nsa.gov1.info/data/ First, you need to know what information you have out on the internet Higino "w0rmer" Ochoa, Australian hacker History of Metadata Immersion: graph of my email metadata https://immersion.media.mit.edu/viz# In conclusion just remember: metadata is the information that describes data. That data is collected, organized, and analyzed it in order to "protect us" and if you're not careful, your metadata can be used against you, so be careful. Thanks for watching! Why is metadata relevant?

Metadata

Transcript: Start What we use it for An important reason for creating descriptive metadata is to facilitate discovery of relevant information. Metadata allows resources to be found with the right criteria, distinguishes between different data, idetnfies resources, brings similar resources together, and giving location information. By Shaina Tobin Metadata is very important in technology. Without it we would have unidentified data, unorganized, and floating around. As an ICT major I understand how important metadata really is. It is key to ensuring that resources will survive and continue to be accessible in the future. Metadata is structured information that describes, explains, or otherwise makes it easier to retrieve, use, or manage an information resource. Metadata is often called data about data or information about information. 3 Types of Metadata Descriptive Medadata: describes a resource for purposes such as discovery and identification. An example is the author or title of a book. Structural Metadata: indicates how compound objects are put together. For examples how chapters are put together in a book. Administrative Metadata: provides information to help manage a resource, such as when and how it was created, file type and other technical information, and who can access it. What is Metadata? What does Metadata do? End Metadata Why its important? In the library environment, metadata is used for any formal scheme of resource description, applying to any type of object, digital or non-digital. Library cataloging is a from of metadata. Some use it as records that describe electronic resources, and there are a lot of medadata schemes used for to describe various types of textual and non-textual objects. Like published books and electronic documents.

Metadata

Transcript: ΠΠ An HTTP cookie (also called web cookie, Internet cookie, browser cookie, or simply cookie) is a small piece of data sent from a website and stored on the user's computer by the user's web browser while the user is browsing. ACCEPT COOKIES Cookies perform essential functions in the modern web. Perhaps most importantly, authentication cookies are the most common method used by web servers to know whether the user is logged in or not, and which account they are logged in with. Without such a mechanism, the site would not know whether to send a page containing sensitive information, or require the user to authenticate themselves by logging in. PICTURES PICTURES META-DATA Meta-data is "data that provides information about other data".[1] In short, it's data about data. Many distinct types of meta-data exist, including descriptive meta-data, structural meta-data, administrative meta-data,[2] reference meta-data and statistical meta-data.[3] escriptive metadata is descriptive information about a resource. It is used for discovery and identification. It includes elements such as title, abstract, author, and keywords. 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.[4] Administrative metadata is information to help manage a resource, like resource type, permissions, and when and how it was created.[5] Reference metadata is information about the contents and quality of statistical data. Statistical metadata, also called process data, may describe processes that collect, process, or produce statistical data TOPIC 4 #HASHTAG A hashtag is a type of metadata tag used on social networks such as Twitter and other microblogging services, allowing users to apply dynamic, user-generated tagging which makes it possible for others to easily find messages with a specific theme or content. Users create and use hashtags by placing the number sign or pound sign # usually in front of a word or unspaced phrase in a message. The hashtag may contain letters, digits, and underscores.[1] Searching for that hashtag will yield each message that has been tagged with it. A hashtag archive is consequently collected into a single stream under the same hashtag.[2] For example, on the photo-sharing service Instagram, the hashtag #bluesky allows users to find all the posts that have been tagged using that hashtag.

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