From SwissExperiment
Tagging
Tagging
This guide helps you to get started with tagging the documents on this wiki quickly. It explains -
what are tags, why do you tag, how do you tag, and how do you benefit from tagging.
About Tags
A tag is a keyword that you associate with a document, thus enabling retrieval of that document based on the given keyword(tag).
The choice of tags is informal, and is not guided by any pre-decided formal rules of classification. You can add tags to bookmark your documents, to organize and remember them, and also find them easily. You define new tags, as you associate it with a bookmark, so that it describes your bookmark the best, as perceived by you.
Apart from helping to organize your data(documents), and finding them, it helps other users to use the tags already defined. This process allows the users with common interest to find each-others resources, and also leads to the evolution of common tags for documents.
How to tag a page
To start with, navigate to the document you want to save as a bookmark. On the left panel, you see a small tool, (Fig.1), to add text for tags. You may add multiple tags, separated by a comma(,). You commit these to the repository, by submitting the form, after you click "Tag" button. These will become your identifying keywords for the document, which is now saved to your bookmarks. You can now navigate your bookmarks in the mybookmarks section.(Fig.2)
Fig.1: A form to tag pages 
Fig.2: View your bookmarks You can now have all your documents organized in a personal way in your Bookmarks page. You can maintain those which are relevant, and delete them if not required.
NOTE: This case is for simple tags. The radio button value - 'No Type Specified' is the selection by default. We shall come to the structured tags later in this document.
Navigation and search through tags
You can also filter the bookmarks based on a tag name. You can do this on the bookmarks page of a user(Bookmarks:User). There is a form at the top where you give the tag name, and press 'Enter', this submits the form, and fetches the bookmarks, for that particular user, and the tag-name that you enter. Thus, you can query for a user-tag pair, on that user's bookmarks page.
For a particular document, you can also find its related tags. On the right upper corner of each document, you can see a link for viewing tags. Here, you can find the list of tags in various categories :- Related tags, All tags, and My tags. Before we discuss that, we also have two possible viewing options for tags :
Lists and Tag Clouds
List view is a simple listing of tags. You can view tags as lists under the various sections - Related, All tags, and My tags. Here, you can also navigate to a list of all the users of a particular tag, by clicking the icon 'list of all users' adjacent to that tag.(Fig.3)
Fig.3: View tags as lists 
Fig.4: View tags as cloud
Cloud view for tags is the weighted depiction of tags. The weights are assigned on the basis of the number of users of that tag, and the number of unique pages tagged. This weight defines the popularity of a tag. The tags with more weight are depicted with a larger font. The tags are displayed alphabetically in a tag-cloud. Thus, finding a tag, both alphabet, and popularity is possible.(Fig.4)
Related tags
You can find tags related to each document, on the document itself. Go to the 'View Tags' section, and then to 'Related tags'. These tags are those given by any user, for the particular document.
All tags
These are all the tags, that have been used in the system, by the whole user community.
My tags
You may be interested in navigating your tags, which are listed here. These are all your tags on the wiki.
Tag Preferences
You may want to have a preferred view of each page, with respect to tags. The tagbox has a preferences section as shown in Fig.5, where you can save your choices for viewing tags.
Fig.5: Setting up tag preferences 
Fig.6: Viewing bookmarks for a tag 
Fig.7: Viewing all your bookmarks
Tag Pages
You may view all the bookmarks of a particular tag, on its page. Also, you may want to view the bookmarks on that tag page, which were saved by a particular user - by giving the user name in the small form at the top of the page. Fig.6 shows the page for tag - Interview. It gives the first posted byand on date information,
for all the bookmarks which are listed on the page.
User Bookmarks
You may view all your saved bookmarks, on the user bookmarks pages. Follow the link 'my bookmarks' on the page top(Fig.2), you can view your bookmarks' page.
Fig.7 shows a user bookmarks page. On this page, similar to the tag page, there is a form on the top, where you can filter the bookmarks for a particular tag.
You can also view bookmarks pages for other users. You may pick their bookmarks, and add to yours, by clicking on 'save' link against each bookmark. This saves the bookmarks for you, and also the tags associated with them.
Structured Tags
A tag is a plain keyword, and hence does not give significant information about a particular document. There is no structure in the tag names, or in the use of multiple tags used in co-operation for a document. Thus, one or more simple tags, allow only restricted information attached to a bookmarked document.
We propose that a tag can have a type, and a structure associated with that type. This structure, is in the form of attributes that the tag can have.
When the user is tagging a document with a structured tag, he specifies the type of the tag. He then provides the values associated with the attributes of that type.
Thus, the bookmark is tagged with more information than a flat name.
To tag a document with a structured type, you have to go the same way as for simple tags. Fill in the tag name, and select the radio-button option 'Complex type'.
On submitting the form, you navigate to a page, where you can specify the type of the structured tag, and then retrieve the attributes for this type on pressing the 'Go' button. Now you can add the attributes to tag your pages with it. Please refer Fig.8, which shows the form for key value pairs. These values will describe your document better, and you can have an better classification and search based on them. You may also want to use the prior key value pairs used for the tag, which you see below the form. You may click the 'Use' link, which saves the corresponding key value pairs for your bookmark and tag.(Fig.8)
Fig.7: Giving a structure to plain tags - Structured Tagging These tags will still be navigated in the same way as the simple ones. On navigation to the tags' page or your bookmarks page, you can see all your documents, tagged with or without structure, and they are grouped based on their type(common attributes).
