Tags vs. Categories

28 01 2010

When we organize our contents we have to keep in mind the difference between tags and categories. Thus, we are going to explain what means each one and what their advantages and disadvantages are.

Tags: Definition

In online computer systems terminology, a tag is a non-hierarchical keyword or term assigned to a piece of information (such as an internet bookmark, digital image, or computer file). This kind of metadata helps describe an item and allows it to be found again by browsing or searching. Tags are chosen informally and personally by the item’s creator or by its viewer, depending on the system.

Advantages & Disadvantages:

In a typical tagging system, a user can apply new tags to an item as easily as applying older tags. Hierarchical classification systems can be slow to change, and are rooted in the culture and era that created them. The flexibility of tagging allows users to classify their collections of items in the ways that they find useful, but the personalized variety of terms can present challenges when searching and browsing.

When users can freely choose tags (creating a folksonomy, as opposed to selecting terms from a controlled vocabulary), the resulting metadata can include homonyms (the same tags used with different meanings). For instance,  the tag “orange” may refer to the fruit or the color and synonyms (multiple tags for the same concept), which may lead to inappropriate connections between items and inefficient searches for information about a subject.

Categories: Definition

Categories generate a page of posts in each one’s site. It is true that tags can do that too, but they often generate a page of off-site posts and off-site websites.

Advantages & Disadvantages:

The main advantage is that there is an specific amount of categories. The category is a good way to provide access to topics that interest people.

In the case of disadvantages, there is no referral system planned, to ensure that each entry should be there. Besides, category’s maintenance is difficult:

  • A category cannot be moved: It should create a new category and edit the category name in all articles that use it. Furthermore, to erase an inappropriate category is not sufficient as it should be withdrawn from the articles that use it.
  • Category’s changes is impossible to follow: The record of a category does not reflect when elements were added or removed. Apart from that, the monitoring list does not indicate such changes, only edits to the page itself in the category.


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Twitter

9 01 2010

According to what the Wikipedia says Twitter is “a free social networking and micro-blogging service that enables its users to send and read messages known as tweets. Tweets are text-based posts of up to 140 characters displayed on the author’s profile page and delivered to the author’s subscribers who are known as followers.

It was created in 2006 by Jack Dorsey and since then has gained more and more popularity and it is ranked as one of the 50 most popular websites worldwide by Alexa’s web traffic analysis.  It is also called the “SMS of Internet”.

But Twitter is much more than a social network.  These days, Twitter is a very profitable concept for a business, for example. As Bridget Wright says “To follow a company, any company on Twitter is not difficult to do at all. As a matter of fact, companies want and encourage other Twitterers to follow them. There is no other more creative way to gain organic followers or those who are genuinely interested in your business or product.”  Companies offer deals and discounts through Twitter and even if they do not sell their products the first time; they have already set up connections with potential buyers.

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Bibliotecas digitales, virtuales y electrónicas

9 01 2010

Hoy en día, nuestro día a día gira entorno a la tecnología. Es toda una revolución que ha afectado a muchos ámbitos, entre ellos, el mundo de las bibliotecas que es el tema que vamos a tratar.

La biblioteca en sentido tradicional, se conoce como el lugar donde se reúnen un conjunto de libros almcenados de tal manera que posibilitan su posterior consulta tanto a nivel individual (biblioteca privada) como a nivel colectivo (biblioteca pública).

A causa de las nuevas tecnologías, las bibliotecas se han visto obligadas a renovarse y a entenderse en un sentido diferente. Así pues, han surgido  términos como biblioteca digital, biblioteca virtual y biblioteca electrónica.

Biblioteca digital: Es un epacio donde la información se almacena y se procesa en un fomato digital.  En palabras de la Digital Libraries Federation:

Las Bibliotecas Digitales son organizaciones que proveen los recursos, incluyendo personal especializado, para seleccionar, estructurar, distribuir, controlar el acceso, conservar la integridad y asegurar la persistencia a través del tiempo de colecciones de trabajos digitales que estén fácil y económicamente disponibles para usarse por una comunidad definida o para un conjunto de comunidades.

Biblioteca virtual: Usa la realidad virtual para mostrar una interfaz y crear un ambiente que haga sentirse al usuario como si estuviera dentro de una biblioteca tradicional.

Biblioteca electrónica: Es una biblioteca que cuenta con sistemas de automatización que le permiten una ágil y correcta administración de los materiales que resguarda, principalmente en papel. Proporciona fundamentalmente,  catálogos y listas de las colecciones que se encuentran físicamente dentro de un edificio.

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