Topic 10: Information Organisation 10.1 Information Organisation Information can be organised in Web formats in many more ways than in print-based documents. One of the identifying characteristics of the Web is its ability to present information in a hypertext mode. A problem facing the Web designer is the best way to organise material so that it can be easily discovered and accessed. Hypermedia Forms The different forms of hypermedia can be represented by a continuum describing the nature of the linking involved. • At one end of the continuum, the links are minimal and simply act to connect nodes in a specified sequence. This form of hypermedia closely resembles conventional text and is referred to as linear. In its use, the reader is encouraged and in most cases compelled to follow a set presentation sequence. In hypermedia environments, there is potential to create materials with varying degrees of linearity. • Further along the continuum, the links tend to form a hierarchical structure, giving readers more freedom in the choice of path through the materials. • At the extreme, hypermedia can provide a totally free information environment with multiple links between associated nodes. In such environments, readers are free to move between associated nodes through referential links and very little structure is imposed on them. linear hierarchical strategies, it is evident that when the materials aim to provide initial knowledge, for example, facts, procedures and rules of discourse, linear linking is an appropriate hypermedia form. For this type of knowledge acquisition, it is appropriate to create materials with a strong structure that present information in a planned and considered fashion. For higher levels of knowledge, for example, developing an understanding of concepts and principles, the less structured hierarchical and referential linking are more appropriate. In these instances, readers are guided by such factors as their prior knowledge and readiness to assimilate new material. When building on an existing knowledge base, readers can benefit from the freedom to browse and explore, to inquire and seek responses to their own questions rather than following a pre-determined path of instruction. a. Linear Organisation When information is organised in a linear fashion, readers are expected to move through the information base in a sequential fashion. Many textbooks are based on a linear organisation with chapters and sections. The sequence of the information is decided by an author/instructional designer who judges the order in which the material should be covered to facilitate learning. But this doesn't prevent readers from accessing the information in non-linear ways, for example, though use of an index. The way information is organised plays a strong part in helping the reader retain what has being read. When the information is presented in an organised and structured fashion, the organisation helps the reader in developing an understanding and overview of the information. Information that has no structure is much more difficult to retain. referential Figure 10.1 A continuum describing information organisation in hypermedia. The choice of information organisation for Web materials depends on the nature of the intended audience. For example, different organisation strategies are needed for novices and experts. When the instructional forms of hypermedia are matched against the continuum describing instructional Topic 11: Information Organisation Figure 10.2 A Web document with a linear organisation strategy. The pages are accessed by clicking next or back buttons 1 It is difficult to find Web materials that have a totally linear organisation. While many are created as linear files, most have indices and links enabling readers to move freely within them. For example, the image below shows a Web document whose first section comprises an index with links to the various sections in the document. The document can be browsed in a linear fashion by scrolling or through the links placed at the head of the document. When designing Web documents of this form, it is important to be aware of the following and to take them into consideration: • readers usually like to be able to scan and browse, linear organisation prevents this; • linear organisation can overwhelm readers with the amount of material provided in one place; • readers are not normally aware of how much information exists below what can be seen on the screen; • clearly mark the beginning and end of the various sections to alert the reader when the section is complete. • it is helpful include links at the end of each section to take the user back to the index. b. Hierarchical Organisation Most Web documents tend to have a hierarchical form due to the nature and scope of the information that they contain. The information necessitates the use of discrete pages and an organisation format to enable readers to access the different pages. If there is a significant body of information, there can be a large number of pages organised in this way. Figure 10.3 shows a Web page with an hierarchical organisation structure. Various pages can be accessed at will through an index. In this structure, to select a new section or a new page requires the reader to move back through the hierarchy to the index documents. information base. Once within a section, users cannot always move freely from one section to the next. They are usually constrained to follow the tree structure and to move back to the previous index in order to make a new selection. Such an organisation has several advantages: • readers view the information base in its modular form as a structured set of pages; • readers can freely access any of the sections in the site by appropriate index choices; • readers are encouraged to use the documents in a structured fashion; • in any section, readers have a strong sense of their place in the overall structure of the information base; and • this structure enables strong orientation support, an aspect discussed in detail in the next section. There is perhaps only one weakness in this organisation structure. There is no overall indication of the scope and size of the information base, and readers must visit each page in turn to view the number of sections each contains. In all other respects it serves its purpose very well. A common feature of most Web materials and documents is links to related documents. In hierarchical structures, links to related documents can diminish the hierarchical barriers. Once a reader has linked to an external document, there is no constraint on other links that can be made. If external linking is to be used in materials designed around a hierarchical form, readers must be made aware of strategies that can be used to return to the original document structure. Perhaps the most common solution is to have readers store the bookmark of the main index. This will always enable them to return to a known position at any time. c. Referential Organisation Information bases which use referential linking as an organisation strategy are usually quite easy to create. In most instances, designers search the WWW for sites where related information is stored and then create a document with a series of links to these sites. The document shown below is of this type. It contains a series of links to external sites and represents a vast information base in which a reader can explore. Figure 10.3 Web page with a hierarchical organisation strategy In a system using a referential organisation scheme, backtracking and relocating visited sites can become problematic. Once a user has linked to an external site and linked again from this external site, he or she is effectively browsing in hyperspace. There is no constraint on which links can be made and millions of potential paths can be followed. The use of the hierarchical organisation in the course shown above restricts the movement of students in the Topic 10:Information Organisation 2 information systems just as there are many different procedures in subway systems throughout the world. If you think of potential users of any information systems you design as foreign travellers, you will begin to consider the necessary elements for a navigable system. a. Metaphors Some Web sites use metaphorical interface to assist the user to navigate. In such settings, a virtual setting is used to organise the resources. Users access resources by electing the most likely place (based on their real life experiences). Figure 10.4 A Web document with a referential organisation strategy http://www.dlese.org an online library of earth science resources. Experienced users can store bookmarks and use the back and forward options provided by the browser as a navigation aid. As mentioned in the discussion of hierarchical organisation, having readers store the bookmark of a main document is one way to provide a permanent link back to the main document. Due to the extensive amount of information available on the Web, referential mediabases in almost any subject can be developed quite quickly. The Web contains information on almost any topic known to man and there are powerful search engines available to locate relevant sites from which more focused inquires can begin. 10.2 Navigation Elements Figure 10.5 A metaphorical interface Navigation is aided by the use of a virtual setting which helps users to identify the location of resources. b. Indices Most Web pages use indices of some form to assist the readers to discover where resources might be located within the site. An index is usually place on the left of the screen or sometimes in the headers and footers of the screen. The term navigation is used in the context of electronic information systems to describe the processes and means by which readers can move between information nodes and gain some sense of their orientation within the overall structure. Thus there are two main aspects to navigation, one deals with having a sense of location, orientation, and the other a sense of how to change to a specific location, travel. A good analogy to describe these two terms is to consider a traveller using a subway system in a foreign city. Once in the subway system, the traveller needs to have some sense of where he or she is in relation to the overall system. Once the traveller has this orientation, there is also a need to be able to know how to move to certain places. This involves such knowledge as where lines intersect, how transfers are effected, how tickets are purchased and how much they cost. A map provide a means for orientation, (if it is in the right language). Knowledge of local subway rules are needed to know how to travel throughout the system. There are many options available to the Web designer to assist readers with orientation and travel through Topic 10:Information Organisation Figure 10.6 A Page Index The index provides access to the various pages in tis Web site. c. site map Most Web pages will provide a site map as a fallback strategy to assist readers to find the page they are seeking. The site map can be supplied as a series of 3 organised links or as a concept map which displays the organisation across subjects and topics. Figure 10.7 A Site Map A page to aid navigation showing site pages and their organisation. 10.3 Orientation Elements One of the major problems reported with the use of the Web as an information source, is the orientation of the reader within the information system. Orientation describes the means by which users are able to identify their current position in a system in relation to the overall system. Disorientation is a problem which is frequently observed in studies of Web users. Disorientation describes the state of users who have travelled within a system and have no sense of place, position or the path taken. Disorientation can have a number of associated problems: • disoriented users often have no sense of the scope and extent of the information system and much of the information is concealed from them; • disoriented users cannot search and browse purposefully and can end up wandering aimlessly; and • disoriented users spend much of their time on tasks which have little learning prospect. b. breadcrumbs Breadcrumbs describe the use of link descriptions that show the pages which haven accessed in a hierarchical fashion to arrive at the current page. They typ[ically show at the top of a Web page in an inconspicuous fashion as an orientation aid. Normally the elements within the breadcrumb are clickable and this aids navigation within the site as well as orientation. Fig 10.8 Breadcrumbs An orientation strategy showing the trail used within a Web site to arrive at the current page c. Home Page Most sites use a Home Page as a referent point and aid to orientation. A link on every page to return the user to the Home Page can assist in orientation in that it helps users to orient themselves when needed. Unfortunately this system does not always guarantee the user will remain oriented. d. Search Option Some sites find it very hard to ensure user orientation and ease of navigation. The use of a site map provides a strong navigation support in that it enables the user to locate pages, based not only on their titles and placements but also through keyword searches on their content. Search engines like Google support large Web site design by enabling developers to include a local Google search as a page element. A number of strategies are available to the Web developer to aid the user’s orientation within a Web site. a. Placement cues In linear sequences, the use of bars or graphs can be used to indicate the distance and placement of the learner within an information system or document. Such images are created as graphical elements and are interspersed within documents to provide visual cues. Topic 10:Information Organisation Fig 10.9 Search Option A Home Page with a search option enables users to discover pages within the local Web site through keyword searches. 4 10.4 Copyright Copyright is a form of legal protection for people who express ideas and information in certain forms. The most common forms are: writing, visual images, music and moving images. In Australia, there are a number of important aspects to our copyright rules and regulations: • Copyright protection is free and applies automatically when material is created. • There is no registration system in Australia under the Australian Copyright Act. • Copyright applies only to specific categories of material. • Copyright does not protect ideas, information, styles or techniques. • Copyright doesn’t last forever. • There are no general exemptions from copyright law for non-profit organisations or for personal use. One important issue about copyright that needs to be understood is that copyright only protects the materials themselves and not the ideas they contain. For example, a person breaches copyright when he or she reproduces using a photocopier or scanner or camera a musical score. Copyright is not breached if the musical score if reproduced by a hand copy. The reason is that be handcopying, the music, the actual copy has not been violated (even though the ideas it contains have). a. Copyright Protection Copyright protects: • textual material (“literary works”) such as journal articles, novels, screenplays, poems, song lyrics and reports; • computer programs (a sub-category of “literary works”); • compilations (another sub-category of “literary works”) such as anthologies, directories and databases—the selection and arrangement of material may be protected separately from the individual items contained in the compilation; • artistic works such as paintings, drawings, cartoons, sculpture, craft work, photographs, maps and plans; • dramatic works such as choreography, screenplays, plays and mime pieces; • musical works: that is, the music itself, separately from any lyrics or recording; • cinematograph films: the visual images and sounds in a film, video or DVD are protected separately from any copyright in works recorded on the film or video, such as scripts and music; • sound recordings: the particular recording itself is protected by copyright, in addition to, for example, the music or story that is recorded; • broadcasts: TV and radio broadcasters have a copyright in their broadcast signals, which is Topic 10:Information Organisation • separate from the copyright in the films, music and other material which they broadcast; and published editions: publishers have copyright in their typographical arrangements, which is separate from the copyright in works reproduced in the edition (such as poems or illustrations or music). There are a lot of materials not protected by copyright in Australia, but these may have other forms of protection. For example: • Names, titles and slogans are not copyright protected but often have Trade Mark protection eg. Coca Cola, Nike, McDonalds; • People themselves are not protected. Someone can take your photograph and reproduce it without breaching copyright. Copyright prevents others from using existing photographs without permission but not new photographs. There are however privacy laws that work in these instances. Fig 10.9 Copyright Using a computer music program to copy a musical score does not infringe copyright. What is being copied is not the image but the ideas. b. Copyright Ownership Copyright is considered to last from the time the material is created until 70 years after the creator’s death. This rule has exceptions though, and often the copyright is extended by new legal owners of the copy. Copyright is usually owned by the person who has created the materials, eg an artist, a printing company, a record company, a film studio. Often however these people negotiate ownership of copyright with partners etc. There are some interesting exceptions to this general rule in the following cases. • • • Employees. Where a work is made by an employee (rather than a freelancer) as part of that person’s job, the employer will usually own copyright. For staff journalists and photo-journalists, however, while the employee will own most of the copyright, the employee will usually own copyright for some purposes (photocopying and publication in books). Freelancers generally. Freelance creators will usually own copyright in what they create. Someone who pays for the work to be made can generally use the work for the purposes for which it was created, but may not be entitled to use it for other purposes. Freelance photographers, engravers and people doing portraits. There are a number of rules for 5 • • commissioned photographs, and which rule applies depends on when the photo was taken, but if a photograph was taken on or since 30 July 1998, the photographer will own copyright unless the photo was commissioned for a private or domestic purpose. Someone who pays for the making of an engraving or portrait will usually own copyright. Films and sound recordings. The first owner of copyright in a film is usually the person who arranges for it to be made, or the person who paid for it to be made. The first owner of copyright in a sound recording is usually the person who paid for the recording to be made. A State, Territory or Federal Government will usually own copyright in material created, or first published by it or under its direction or control. c. Infringing Copyright There are many ways to infringe copyright and to be liable for prosecution. Some infringements don’t even involve copying. For example, copyright is infringed when someone: • Imports copyright materials eg. bringing home cheap (and copied) DVDs from overseas; • Making, selling or renting devices that are used to hack, crack or mod chip. The law makes it illegal for people to act in ways that can lead to circumventing the digital protection on electronic materials eg. MP3s, CDs etc. (a mod chip is a piece of hardware used to circumvent the protection of the digital source). Copyright protects only one aspect of intellectual property. Other protections exist though: • Trademarks; names and symbols registered for trade and commercial purposes • Design laws; laws that protect basic design issues eg. the shape of the Porsche 911; • Confidential information; it is illegal to copy and deal wit confidential information usually through privacy law, • Patents; patents protect ideas to protect them from being copied. Patents must be registered for the protection to be afforded. precedents in the area of Internet linking and deep linking. Deep linking occurs when a link in a Web site is to a page deep within the Web site of another. The potential problem with deep linking is that the link avoids the Front Page, any advertising it contains and any description of the page and its context. Copyright law surrounding Web linking is not definite yet and linking is not specifically stated within the Copyright Act. Some court litigation in the area in the United States is beginning to develop precedents that suggest deep linking can be seen as a violation of copyright. One big problem is that if the site is a a commercial site, deep linking can create costs as well as denying the provider of legitimate income because the advertising material and hit counters have been passed over. The majority of sites on the Internet carry copyright and usage statements outlining what forms of use are permitted. Such statements are usually contained within the site through a link in the footer of the Web page labeled ‘terms and conditions’, ‘copyright’ or similar. Generally speaking, permission should be sought to deep link in to the content of an external website. (ii) Framing The use of frames enables a developer to create a Web page with a number of separate windows with a different page displayed within a frame. When frames are used, it can give a user the impression the material contained within the frames originates from the host site. When this is the case, the page can contravene the Copyright Act. Framing of pages and other sites can also be seen as a violation of Moral Rights law as it can lead to false attribution of ownership of the materials. When a page opens in a frame, the impression that is given is that owner of the frame is the owner of all the content being displayed, which is often not the case. It is important to ensure clarity of ownership in the materials between the two sites. For this reason, links to other sites are best made into new blank windows. Copyright is an international issue and Australian copyright is recognised in most overseas countries (and Australia recognises the copyright of materials from most overseas countries). d. Copyright and the Web The Web is one form of intellectual property and the copyright rules apply to the Web and the underlying materials as it does to others. One grey area of Web copyright activity that is currently a copyright issues relates to linking. (i) Linking Currently, particularly within the US, there are several deep linking cases before the courts that will establish Topic 10:Information Organisation Fig 10.10 Frames External pages opening in a frame can give the wrong impression as to whom they belong. 6 Links of Interest Topic 10 Revision Questions Suggestions for how to organise content on your website. http://www.logiko.com/page/contents.html 1. Describe the three strategies that can be used for organising information in a hypermedia setting. Guidelines from human-computer interface design research http://www.usask.ca/education/coursework/skaalid/ summary.htm 2. What do you think would be the best strategy to organise information for an online learning course? 3. What do you think would be the best strategy for organising the information contained in an online library? Tips on designing accessible navigation. http://www.netmechanic.com/news/vol5/accessibilit y_no1.htm 4. Describe three strategies that can be used in Web page design to aid the navigation of the user. Information on navigational elements so as to reach a balance between aesthetics and functionality. http://www.wpdfd.com/wpdnav.htm 5. Describe three strategies that can be used in Web site design to assist the user to orient him/herself within a Web site. . Explores Website Architecture - Website Navigation http://www.avwebvisions.com/site-navigation.html 6. In a Web site, is a site map a navigation aid or an orientation aid? Explain your answer. Tips on web-site navigation. http://www.buildwebsite4u.com/building/websitenavigation.shtml 7. Describe the concept of copyright and to what it applies? Ideas on how to navigate your website and not loose your audience. http://www.webstyleguide.com/interface/navigate.ht ml 12 Website Design Decisions Your Business or Organization Will Need to Make http://www.wilsonweb.com/articles/12design.htm 8. If a person uses a logo from a Web site he has found on the Web, is he/she infringing copyright? Explain your answer 9. What is meant by the term deep-linking in Web site design? How can deep-linking contravene copyright? 10. Why should frames be used with care when linking to external Web sites? A visual and useful document showing the process of redesigning a website for a digital magazine. http://aifia.org/tools/download/blueprint.pdf A useful website with numerous links to understanding Information Architecture of websites. http://iainstitute.org/tools/ A website helping designers understand what design practices are currently in use on the Web and commonly-employed design practices. http://www.webdesignpractices.com/ What is copyright? http://www.whatiscopyright.org/ Australian Copyright Council's Online Information Centre. http://www.copyright.org.au/ Frames are a picnic – a basic step-by-step guide to understanding frames in web design. http://webmonkey.wired.com/webmonkey/html/96/3 1/index3a.html Topic 10:Information Organisation 7