[Gzz-commits] manuscripts/Paper exper.txt

[Janne V. Kujala]

CVSROOT:        /cvsroot/gzz
Module name:    manuscripts
Changes by:     Janne V. Kujala <address@hidden>        03/02/26 10:06:45

Modified files:
        Paper          : exper.txt 

Log message:
        issues

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/manuscripts/Paper/exper.txt.diff?tr1=1.3&tr2=1.4&r1=text&r2=text

Patches:
Index: manuscripts/Paper/exper.txt
diff -u manuscripts/Paper/exper.txt:1.3 manuscripts/Paper/exper.txt:1.4
--- manuscripts/Paper/exper.txt:1.3     Wed Feb 26 05:58:48 2003
+++ manuscripts/Paper/exper.txt Wed Feb 26 10:06:43 2003
@@ -1,55 +1,9 @@
-
-
-Test cases:
-
-- text size: small / big
-- bg type cases: color / shapes, i.e.,
-     - white
-     - one color
-     - full texture
-     - grayscale texture (intensity scale "compressed" to a certain range)
-
 General:
 
 - 6 subjects do all releavant cases for each test
 - the order of the test cases is random for each subject
   to componsate memory effects
 
-Recognisability test (usefulness)
----------------------------------
-
-- objective: show that the background textures are useful
-- means: show that fragments of documents can be recognized much
-  better when unique backgrounds are used
-
-     - buoy view testing XXX
-
-
-
-
-Suppose that the first page of each of hundreds of documents is torn into 
-pieces and the pieces are put in a single container. 
-It is intuitively clear that the pieces can be identified and put 
-back together much more rapidly if each document has a unique 
-background texture as compared to, e.g., single background colors.
-
-Another question is whether the extra features of the textures help 
-recognition as much if the fragments cannot be seen simultaneously 
-for comparing.
-
-"Applicability"(better word?) test
-----------------------------------
-
-- objective: show that the textures are better than single colors
-
-    - test cases: single color / full textures [ / grayscale textyres ]
-
-    - show 30 textures in series and then test recognisability with
-      30 new mixed in and shuffled with the 30 old, shown in series
-
-XXX: small-scale fragments do lose shape features.
-what to say about this
-
 Readability test (non-disruptiveness)
 -------------------------------------
 
@@ -88,3 +42,71 @@
      - is the total of 2 * 6 subjects = 12 trials for each 
        (font size, test case) pair enough to compensate the 
        memory effect and to obtain small enough variance?
+
+     - how to scale the font? 
+       should the background be scaled with it?
+     - what textures to use?
+       If we use unique textures for each text, they add extra
+       variation to the reading speed.
+
+Recognizability test
+--------------------
+- objective: show that textures can be remembered and that
+  they are better than single colors
+
+    - test cases: single color / full textures [ / grayscale textyres ]
+
+    - learning phase: show 30 textures in series, 5 seconds each
+
+    - recognition phase: 
+      trials: 30 new textures mixed in and shuffled with the 30 old;
+      for each trial, the subject answers old/new
+
+ISSUES:
+    - probably need some repetition to be able to memorize!
+
+
+
+
+
+
+SCRATCH
+=======
+
+
+
+Test cases:
+
+- text size: small / big
+- bg type cases: color / shapes, i.e.,
+     - white
+     - one color
+     - full texture
+     - grayscale texture (intensity scale "compressed" to a certain range)
+
+
+XXX: small-scale fragments do lose shape features.
+what to say about this
+
+Recognisability test (usefulness)
+---------------------------------
+
+- objective: show that the background textures are useful
+- means: show that fragments of documents can be recognized much
+  better when unique backgrounds are used
+
+     - buoy view testing XXX
+
+
+
+
+Suppose that the first page of each of hundreds of documents is torn into 
+pieces and the pieces are put in a single container. 
+It is intuitively clear that the pieces can be identified and put 
+back together much more rapidly if each document has a unique 
+background texture as compared to, e.g., single background colors.
+
+Another question is whether the extra features of the textures help 
+recognition as much if the fragments cannot be seen simultaneously 
+for comparing.
+