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Search: author:Leo Crabbe
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BP1167 Visual Bongard Problems whose sorted examples all have the same amount of black and white in them vs. other visual Bongard Problems.
BP285
BP801
BP934
BP1017
BP1056
BP1155
BP1156
BP284
BP1089
(edit; present; nest [left/right]; search; history)
CROSSREFS

All left BPs would be tagged finishedexamples.

Adjacent-numbered pages:
BP1162 BP1163 BP1164 BP1165 BP1166  *  BP1168 BP1169 BP1170 BP1171 BP1172

KEYWORD

precise, notso, meta (see left/right), links, sideless

AUTHOR

Leo Crabbe

BP1166 Visual Bongard Problems whose sorted examples all have a nonzero minimum amount of black in them vs. other visual Bongard Problems.
BP301
BP1072
BP1147
BP1149
BP1153
BP1155
BP1156
BP1168
BP1161
(edit; present; nest [left/right]; search; history)
COMMENTS

Not all visual Bongard Problems whose examples all have some amount of black in them are sorted left. In left-sorted BPs, there must be some concrete percentage of black that is exceeded by every sorted example.

CROSSREFS

Adjacent-numbered pages:
BP1161 BP1162 BP1163 BP1164 BP1165  *  BP1167 BP1168 BP1169 BP1170 BP1171

KEYWORD

meta (see left/right), links

AUTHOR

Leo Crabbe

BP1164 Visual Bongard Problems where stretching (or compressing) any sorted example renders the example unsortable vs. visual Bongard Problems where some example can be stretched along some axis and remain sorted.
BP834
BP1062
BP1097
BP1105
BP1138
BP1155
BP95
BP1145
(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted Problems often have a specific format or deal with specific geometric shapes.


Almost any Problem that sorts the all-white or all-black panels will be sorted right.

CROSSREFS

Adjacent-numbered pages:
BP1159 BP1160 BP1161 BP1162 BP1163  *  BP1165 BP1166 BP1167 BP1168 BP1169

KEYWORD

notso, meta (see left/right), links, problemkiller

WORLD

visualbp [smaller | same | bigger]

AUTHOR

Leo Crabbe

BP1161 Image contains the exact arrangement of pixels that form the "S" creature depicted in EX9532 vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1156 BP1157 BP1158 BP1159 BP1160  *  BP1162 BP1163 BP1164 BP1165 BP1166

KEYWORD

unwordable, notso, arbitrary, handed, leftright, updown, stretch, blackwhite, creativeexamples, right-null, perfect, pixelperfect, help

AUTHOR

Leo Crabbe

BP1160 Visual Bongard Problems that would sort an all-black panel on the left vs. visual Bongard Problems that would sort an all-black panel on the right.
BP211
BP966
BP1008
BP1161
BP962
BP1089
BP1151
BP1168
(edit; present; nest [left/right]; search; history)
COMMENTS

Note that most traditional Bongard Problems don't sort an all black-panel at all.

See BP567 (left-null versus right-null) for the version about all-white panels, which is more often applicable.

CROSSREFS

Adjacent-numbered pages:
BP1155 BP1156 BP1157 BP1158 BP1159  *  BP1161 BP1162 BP1163 BP1164 BP1165

KEYWORD

meta (see left/right), links, side, testexample

AUTHOR

Leo Crabbe

BP1159 Bongard Problems where examples are only sorted left if nothing indicates that they would be sorted right vs. vice-versa.
BP250
BP333
BP525
BP823
BP1230
BP1183
(edit; present; nest [left/right]; search; history)
COMMENTS

Left-sorted Bongard Problems have the keyword "left-couldbe" on the OEBP.

Right-sorted Bongard Problems have the keyword "right-couldbe".


In a "couldbe" Bongard Problem, some relevant information is left out by the way objects are displayed. Solutions to "left-couldbe" BPs sound like "Could be a ___ vs. definitely not a ___" (and vice versa for "right-couldbe" BPs.)



To put it in mathematical jargon, there is a "projection" function from objects to pictures, such that objects satisfying property X are mapped to the same picture as objects not satisfying property X. Sorted on the "couldbe" side is the image (under projection) of the collection of objects satisfying property X.


Furthermore, usually X is a relatively narrow criterion, so that most objects do not satisfy it (see keywords left-narrow and right-narrow), and all pictures are in the image (under projection) of the collection of objects not satisfying property X.

REFERENCE

Consider BP525, "Cropped image of a circle vs. not so." None of the left-hand examples are definitely an image of a circle, but they fit left because nothing indicates that they are not an image of a circle. A more pedantic solution to this Bongard Problem would be "There is a way of cropping a circle that gives this image vs. there isn't."

CROSSREFS

See also the keyword seemslike, where neither side can be confirmed.


Either "left-couldbe" or "right-couldbe" implies notso.


Although the descriptions of "left-couldbe" and "right-couldbe" sound similar to left-unknowable and right-unknowable, they are not the same. It is the difference between a clear absence of information and perpetual uncertainty about whether there is more information to be found.


"Left-couldbe" is usually left-narrow and "right-couldbe" usually right-narrow.

Adjacent-numbered pages:
BP1154 BP1155 BP1156 BP1157 BP1158  *  BP1160 BP1161 BP1162 BP1163 BP1164

KEYWORD

dual, meta (see left/right), links, keyword, side, viceversa

AUTHOR

Leo Crabbe

BP1157 The order in which the objects in the top half are combined to make the object in the lower half matters vs. not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

Operations depicted in right-sorted examples are called "commutative".


"Order matters" here means that if the objects in the top half were to switch places, the output would look different.

REFERENCE

https://en.wikipedia.org/wiki/Commutative_property

CROSSREFS

Adjacent-numbered pages:
BP1152 BP1153 BP1154 BP1155 BP1156  *  BP1158 BP1159 BP1160 BP1161 BP1162

KEYWORD

nice, abstract, unwordable, notso, structure, rules, miniworlds

CONCEPT function (info | search)

AUTHOR

Leo Crabbe

BP1156 Centred vs. not.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1151 BP1152 BP1153 BP1154 BP1155  *  BP1157 BP1158 BP1159 BP1160 BP1161

KEYWORD

precise, minimal, boundingbox, left-finite, left-full, perfect, pixelperfect, finishedexamples, preciseworld, absoluteposition

CONCEPT center (info | search)

AUTHOR

Leo Crabbe

BP1155 Shapes are sorted according to a simple rule that uniquely determines where everything goes vs. shapes are sorted according to some other rule (or lack thereof).
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1150 BP1151 BP1152 BP1153 BP1154  *  BP1156 BP1157 BP1158 BP1159 BP1160

KEYWORD

abstract, unwordable, creativeexamples, right-unknowable, traditional, finishedexamples, rules

AUTHOR

Leo Crabbe

BP1154 Visual Bongard Problems about Bongard Problems vs. other visual Bongard Problems.
BP805
BP1151
BP1153
BP961
(edit; present; nest [left/right]; search; history)
COMMENTS

This Problem is mostly concerned with categorising BPs whose examples aren't necessarily formatted as traditional Bongard Problems.

CROSSREFS

Adjacent-numbered pages:
BP1149 BP1150 BP1151 BP1152 BP1153  *  BP1155 BP1156 BP1157 BP1158 BP1159

KEYWORD

meta (see left/right), links

WORLD

visualbp [smaller | same | bigger]

AUTHOR

Leo Crabbe

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