4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 1.

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Presentation transcript:

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 1 Measuring Information Architecture Quality CHI 2001 Jesse James Garrett Measuring Information Architecture Quality

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 2 The question at hand: The question we should try to avoid: What is “information architecture” anyway? Can the quality of an information architecture be assessed in a quantitative fashion? The question at hand:

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 3 Information architecture Lots of definitions One common thread: conceptual structure Abstract and slippery IA on the Web -- abstract made concrete through: –Hypertextual navigation –Wayfinding cues –Labeling systems

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 4 The rationale behind quantitative assessment Web sites are “made of” data All data can be analyzed Therefore, sufficiently sophisticated analytical tools can be developed to assess Web sites But… IA exists beyond the Web Where there’s information, there’s architecture -- whether intentional or unintentional This suggests a different approach to the question…

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 5 A hypothetical question Number of chapters? How long those chapters are? How many index entries the book has? Average number of words on a page? Proportion of illustrations to text? How would you measure the quality of the information architecture of a college textbook?

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 6 The hypothetical results At least 9 and no more than 17 chapters Title of each chapter between 3 and 7 words Each chapter must consist of 32 to 68 pages No more than 190 words per page At least one illustration for every 540 words of text No more than 26 illustrations per chapter Properties of the ideal textbook:

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 7 The important questions Is the textbook divided into meaningful sections? Are those sections arranged in a logical sequence? Is the method of presentation appropriate to the subject matter and the audience? How they get answered Editors and subject matter experts read the book!

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 8 Reading is fundamental to user behavior One question on the user’s mind when navigating: “Is this going to get me [closer to] what I want?” Other factors matter, but words matter most Computers can’t read This problem is ubiquitous, affecting every user on every site Teaching computers to read is very, very hard

4 April 2001Jesse James Garrett · · Measuring Information Architecture Quality · 9 The central fallacy underlying quantitative assessment: “Problems arising in a technological context must therefore have a technological solution.” IA is not a technology problem It’s a people problem. It takes people to solve it.