/[fenfire]/journals/plans/SA_2003.rst
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revision 1.114 by tjl, Wed May 14 09:14:13 2003 UTC revision 1.115 by jvk, Wed May 14 09:22:23 2003 UTC
# Line 221  The most important publications related Line 221  The most important publications related
221        Solutions for certain number-conserving deterministic cellular automata.        Solutions for certain number-conserving deterministic cellular automata.
222        *Physical Review E* 65, 026115, 2002.        *Physical Review E* 65, 026115, 2002.
223        The simple cellular automaton        The simple cellular automaton
224        rules introduced in [JVKXXXFUCHSBOCCARAREF] produced an unexpected result in simulations.        rules introduced in [fuksboccara-generalized]_ produced an unexpected result in simulations.
225        We were able to solve the problem exactly starting from first principles,        We were able to solve the problem exactly starting from first principles,
226        by using generating functions in a rather twisted way.        by using generating functions in a rather twisted way.
227    
# Line 280  to other programs and problems. Line 280  to other programs and problems.
280  Objectives and methods  Objectives and methods
281  ======================  ======================
282    
283  (reorg: "general (user experiments, math. modeling)", then specific projects,  Research methods in general
284   stating for each the objectives *and* methods.)  ---------------------------
285    
286  Objectives of the research  Mathematical modeling
287  --------------------------  '''''''''''''''''''''
288    
289    JVK, HH
290    
291    For text filtering and ...
292    
293    As one theoretical approach for modeling the readability
294    we can use the correlation function of the rendered text.
295    
296    In this approach, we can apply the earlier experience
297    on the MCMC and other sampling and modeling methods.
298    
299    Usability experiments
300    '''''''''''''''''''''
301    
302    JVK, HH
303    
304    Most of the new user interface tehcnologies are based on
305    modeling properties of human visual perception and cognition.
306    
307    One of the basic principles of the Fenfire user interfaces is continuity.
308    Continuity helps the user to perceive the interface as cognitively
309    coherent --- things are related to each other, not disconnected. This
310    reduces load in the user's working memory.
311    
312    Some of the ideas aiming to maintain continuity in the Fenfire user
313    interface (such as focus-context) have been proved to be efficient by
314    earlier researchers. Several ideas presented here are, however, genuinely
315    new and thus need to be subjected to rigor experimenting and testing. We
316    plan to test the usability of the ideas first in basic cognitive tasks
317    before implementing and testing them in a larger context.
318    
319    The first-phase experiments include tasks varying from very simple
320    perceptual tasks (such as visual search and recognition) to more complex
321    problem-solving tasks. The experiments will be conducted with about ten
322    naïve participants per experiment. The data will include response times
323    and error rates of the participants. In addition, surveys or short
324    interviews can be used to collect the personal opinions of the
325    participants about the tested idea.
326    
327    For example, fillets are designed to enhance perceivability of visual
328    connections between interface elements. Fillets have been tested in a
329    controlled experiment, showing that fillets do facilitate recognizing
330    certain visual structures in a collection of visual items and their
331    interconnections, compared to more common implementations. In the next
332    phase, fillets will be tested in a more realistic situation requiring the
333    user to trace visual connections between information items.
334    
335    Textured backgrounds implement continuity by providing unique, permanent
336    visual context for interface elements to facilitate search and recognition
337    of the elements in prolonged use. Textures will be tested to show that the
338    user can implicitly memorize textures during interaction with the
339    interface elements and use this information to recognize the elements
340    faster and more accurately. We will also conduct readibility tests on
341    textures to show that a textured background of text does not necessarily
342    impair either the legibility or the readability of the text.
343    
344    Finally, we will carry usability tests on a simulated interface, in which
345    several ideas are implemented simultaneously. The users will be observed
346    in realistic use situations. Behavioral data will be gathered in verbal
347    protocols, videotaping, and surveys.
348    
349    .. - fillets more general testing
350       - paper distributions (color, etc.)
351       - irregu?
352       - controllers
353       - "stress-testing"?
354    
355    
356    
357    Objectives, hypotheses, and methods per sub-project
358    ---------------------------------------------------
359    
360  Because of the nature of this project, there are a num  Because of the nature of this project, there are a num
361    
# Line 529  Flexible focus+context views such as fis Line 600  Flexible focus+context views such as fis
600  allow more context to be shown but also induce  allow more context to be shown but also induce
601  usability issues that need to be solved.  usability issues that need to be solved.
602    
   
 Hypotheses and research methods  
 -------------------------------  
   
 Mathematical modeling  
 '''''''''''''''''''''  
   
 JVK, HH  
   
 For text filtering and ...  
   
 As one theoretical approach for modeling the readability  
 we can use the correlation function of the rendered text.  
   
 In this approach, we can apply the earlier experience  
 on the MCMC and other sampling and modeling methods.  
   
 Usability experiments  
 '''''''''''''''''''''  
   
 JVK, HH  
   
 Most of the new user interface tehcnologies are based on  
 modeling properties of human visual perception and cognition.  
   
 One of the basic principles of the Fenfire user interfaces is continuity.  
 Continuity helps the user to perceive the interface as cognitively  
 coherent --- things are related to each other, not disconnected. This  
 reduces load in the user's working memory.  
   
 Some of the ideas aiming to maintain continuity in the Fenfire user  
 interface (such as focus-context) have been proved to be efficient by  
 earlier researchers. Several ideas presented here are, however, genuinely  
 new and thus need to be subjected to rigor experimenting and testing. We  
 plan to test the usability of the ideas first in basic cognitive tasks  
 before implementing and testing them in a larger context.  
   
 The first-phase experiments include tasks varying from very simple  
 perceptual tasks (such as visual search and recognition) to more complex  
 problem-solving tasks. The experiments will be conducted with about ten  
 naïve participants per experiment. The data will include response times  
 and error rates of the participants. In addition, surveys or short  
 interviews can be used to collect the personal opinions of the  
 participants about the tested idea.  
   
 For example, fillets are designed to enhance perceivability of visual  
 connections between interface elements. Fillets have been tested in a  
 controlled experiment, showing that fillets do facilitate recognizing  
 certain visual structures in a collection of visual items and their  
 interconnections, compared to more common implementations. In the next  
 phase, fillets will be tested in a more realistic situation requiring the  
 user to trace visual connections between information items.  
   
 Textured backgrounds implement continuity by providing unique, permanent  
 visual context for interface elements to facilitate search and recognition  
 of the elements in prolonged use. Textures will be tested to show that the  
 user can implicitly memorize textures during interaction with the  
 interface elements and use this information to recognize the elements  
 faster and more accurately. We will also conduct readibility tests on  
 textures to show that a textured background of text does not necessarily  
 impair either the legibility or the readability of the text.  
   
 Finally, we will carry usability tests on a simulated interface, in which  
 several ideas are implemented simultaneously. The users will be observed  
 in realistic use situations. Behavioral data will be gathered in verbal  
 protocols, videotaping, and surveys.  
   
 .. - fillets more general testing  
    - paper distributions (color, etc.)  
    - irregu?  
    - controllers  
    - "stress-testing"?  
   
603        
604  Research schedule  Research schedule
605  -----------------  -----------------

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