The blocks world is one of the most famous planning domains in artificial intelligence. The program was created by Terry Winograd and is a limited-domain natural-language system that can understand typed commands and move blocks around on a surface.
Imagine a set of cubes (blocks) sitting on a table. The goal is to build one or more vertical stacks of blocks. The catch is that only one block may be moved at a time: it may either be placed on the table or placed atop another block. Because of this, any blocks that are, at a given time, under another block cannot be moved.
The simplicity of this toy world lends itself readily to symbolic or classical A.I. approaches, in which the world is modeled as a set of abstract symbols which may be reasoned about.
Theses/projects which took place in Blocks World:
- Terry Winograd's SHRDLU
- Patrick Winston's structural concept learner
It is shown that the best version of blocks world is NP-hard.
Famous quotes containing the words blocks and/or world:
“The quest for certainty blocks the search for meaning. Uncertainty is the very condition to impel man to unfold his powers.”
—Erich Fromm (1900–1980)
“In the planning and designing of new communities, housing projects, and urban renewal, the planners both public and private, need to give explicit consideration to the kind of world that is being created for the children who will be growing up in these settings. Particular attention should be given to the opportunities which the environment presents or precludes for involvement of children with persons both older and younger than themselves.”
—Urie Bronfenbrenner (b. 1917)