Your Wish is My Command

104

Chapter Five

Trainable Information Agents for the Web

FIGURE

5.5

{ let info X1 -= root, descendant(1,font,{color="red ''

si ze="18" } )

from document d in ...

where text root,ancestor(1,1i)

chi I d( - 1,br)next(al I ,span

applies to X1 matches "TWIN EXECUTIVE ROOM*" }

{ select info X2 .= root,descendant(1,span)

from X1

where X2 recognized as 'decimal_number' }

The final version of the wrapper.

She decides not to accept this wrapper and adds a landmark to it to con-

nect more strongly the wrapper's functionality to the

semantics

of the docu-

ment. Using his purely syntax-based heuristics, the agent suggests ...