====== Recognize objects ======
{{tag>geometry diagnostic_systems}}
===== Description =====
Attribute definitions and examples for learning to recognize objects from their silhouettes


**Source**:  PROLOG programming for artificial intelligence, 3rd Edition, Harlow, 2001, ISBN 0-201-40375-7.

===== Download =====
Program source code: {{recognize_objects.pl}}
===== Listing =====
<code prolog>
% Figure 18.9  Attribute definitions and examples for learning to 

% recognize objects from their silhouettes (from Figure 18.8).





attribute( size, [ small, large]).

attribute( shape, [ long, compact, other]).

attribute( holes, [ none, 1, 2, 3, many]).



example( nut, [ size = small, shape = compact, holes = 1]).

example( screw, [ size = small, shape = long, holes = none]).

example( key, [ size = small, shape = long, holes = 1]).

example( nut, [ size = small, shape = compact, holes = 1]).

example( key, [ size = large, shape = long, holes = 1]).

example( screw, [ size = small, shape = compact, holes = none]).

example( nut, [ size = small, shape = compact, holes = 1]).

example( pen, [ size = large, shape = long, holes = none]).

example( scissors, [ size = large, shape = long, holes = 2]).

example( pen, [ size = large, shape = long, holes = none]).

example( scissors, [ size = large, shape = other, holes = 2]).

example( key, [ size = small, shape = other, holes = 2]).

</code>

===== Comments =====