Automatically assigned DDC number: 00633

Manually assigned DDC number: 00633

Number of references: 8

Title: What Defaults can do that Hierarchies Can't

Author:

Author:

Subject: Matthew L. Ginsberg,Hugh W. Holbrook What Defaults can do that Hierarchies Can't

Description: . This paper extends existing work on the use of default information to describe planning hierarchies in two ways. First, we present a completeness result showing that all hierarchical planners can be described using defaults. Second, we show that if the planning hierarchy is situation-dependent, the default description is likely to have substantial computational advantages over a more conventional approach. 1 Introduction There are a variety of arguments for planners that work declaratively instead of using a specialized description of action like that appearing in strips [3] or sipe [16]. One argument appearing in [9] is that declarative planners are best equipped to handle the ramification problem, since the description of actions with situation-dependent consequences is best handled inferentially. It is shown in [9] that attempting to deal with this problem by splitting actions into subtypes is equivalent to taking the deductive closure of the underlying declarative axioms and tha...

Contributor: The Pennsylvania State University CiteSeer Archives

Publisher: unknown

Date: 1997-01-15

Pubyear: 1992

Format: ps

Identifier: http://citeseer.ist.psu.edu/149739.html

Source: http://cs.ru.ac.za/func/Bridge/Bridgepubs/ginsberg/holbrook.ps

Language: en

Relation:

Relation:

Relation:

Relation:

Relation:

Relation:

Relation:

Relation:

Rights: unrestricted

Graph

<?xml   version="1.0"   encoding="UTF-8"?>

<references_metadata>

      <rec   ID="/148782.html"   Type="article"   CiteSeer_Book="Artificial   Intelligence"   CiteSeer_Volume="49"   Title="Nonmonotonic   Reasoning   in   the   Framework   of   Situation   Calculus,">

            <identifier   Org="ISBN:0198537476"   Paper_ID="/148782.html"   Extracted="0198537476"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:0262510715"   Paper_ID="/148782.html"   Extracted="0262510715"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:0262510952"   Paper_ID="/148782.html"   Extracted="0262510952"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:0262521687"   Paper_ID="/148782.html"   Extracted="0262521687"   DDC="003/.54"   Normalized_DDC="00354"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:0387564330"   Paper_ID="/148782.html"   Extracted="0387564330"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:0791408744"   Paper_ID="/148782.html"   Extracted="0791408744"   DDC="375/.0083"   Normalized_DDC="3750083"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:1402008341"   Paper_ID="/148782.html"   Extracted="1402008341"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:3540601120"   Paper_ID="/148782.html"   Extracted="3540601120"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:3540603433"   Paper_ID="/148782.html"   Extracted="3540603433"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:3540617086"   Paper_ID="/148782.html"   Extracted="3540617086"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:3540635769"   Paper_ID="/148782.html"   Extracted="3540635769"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:3540635866"   Paper_ID="/148782.html"   Extracted="3540635866"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:3540649581"   Paper_ID="/148782.html"   Extracted="3540649581"   DDC="005.1/15"   Normalized_DDC="005115"   Normalized_Weight="0.07142857142857142"   />

            <identifier   Org="ISBN:3540674551"   Paper_ID="/148782.html"   Extracted="3540674551"   DDC="004.2/1"   Normalized_DDC="00421"   Normalized_Weight="0.07142857142857142"   />

      </rec>

      <rec   ID="/74284.html"   Type="incollection"   CiteSeer_Book="KR91   Principles   of   Knowledge   Representation   and   Reasoning"   CiteSeer_Volume=""   Title="Computational   Considerations   in   Reasoning   about   Action,">

            <identifier   Org="ISBN:0262611023"   Paper_ID="/74284.html"   Extracted="0262611023"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.16666666666666666"   />

            <identifier   Org="ISBN:1558601643"   Paper_ID="/74284.html"   Extracted="1558601643"   DDC="658.5"   Normalized_DDC="6585"   Normalized_Weight="0.16666666666666666"   />

            <identifier   Org="ISBN:1558602216"   Paper_ID="/74284.html"   Extracted="1558602216"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.16666666666666666"   />

            <identifier   Org="ISBN:1558602488"   Paper_ID="/74284.html"   Extracted="1558602488"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.16666666666666666"   />

            <identifier   Org="ISBN:1558603328"   Paper_ID="/74284.html"   Extracted="1558603328"   />

            <identifier   Org="ISBN:3540556028"   Paper_ID="/74284.html"   Extracted="3540556028"   DDC="511.3"   Normalized_DDC="5113"   Normalized_Weight="0.16666666666666666"   />

            <identifier   Org="ISBN:3540613137"   Paper_ID="/74284.html"   Extracted="3540613137"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.16666666666666666"   />

      </rec>

      <rec   ID="/157767.html"   Type="inproceedings"   CiteSeer_Book="Proceedings   of   the   Second   International   Conference   on   Principles   of   Knowledge   Representation   and   Reasoning"   CiteSeer_Volume=""   Title="The   Computational   Value   of   Nonmonotonic   Reasoning,">

            <identifier   Org="ISBN:0262510596"   Paper_ID="/157767.html"   Extracted="0262510596"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.25"   />

            <identifier   Org="ISBN:0262510987"   Paper_ID="/157767.html"   Extracted="0262510987"   />

            <identifier   Org="ISBN:1558601643"   Paper_ID="/157767.html"   Extracted="1558601643"   DDC="658.5"   Normalized_DDC="6585"   Normalized_Weight="0.25"   />

            <identifier   Org="ISBN:1558602216"   Paper_ID="/157767.html"   Extracted="1558602216"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.25"   />

            <identifier   Org="ISBN:3540635866"   Paper_ID="/157767.html"   Extracted="3540635866"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.25"   />

      </rec>

      <rec   ID="/99068.html"   Type="inproceedings"   CiteSeer_Book="National   Conference   on   Artificial   Intelligence"   CiteSeer_Volume=""   Title="Is   There   any   Need   for   Domain-Dependent   Control   Information?,">

            <identifier   Org="ISBN:0195147677"   Paper_ID="/99068.html"   Extracted="0195147677"   DDC="128/.33"   Normalized_DDC="12833"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:0262220555"   Paper_ID="/99068.html"   Extracted="0262220555"   DDC="511.3"   Normalized_DDC="5113"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:0262510596"   Paper_ID="/99068.html"   Extracted="0262510596"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:026251091X"   Paper_ID="/99068.html"   Extracted="026251091X"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:0262510987"   Paper_ID="/99068.html"   Extracted="0262510987"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:0262731444"   Paper_ID="/99068.html"   Extracted="0262731444"   DDC="153.03"   Normalized_DDC="15303"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:0792356012"   Paper_ID="/99068.html"   Extracted="0792356012"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:1558602216"   Paper_ID="/99068.html"   Extracted="1558602216"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.1111111111111111"   />

            <identifier   Org="ISBN:3540662804"   Paper_ID="/99068.html"   Extracted="3540662804"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.1111111111111111"   />

      </rec>

      <rec   ID="/61764.html"   Type="inproceedings"   CiteSeer_Book="The   frame   problem   in   artificial   intelligence   proc   of   1987   workshop"   CiteSeer_Volume=""   Title="Reasoning   about   action   {I}:   a   possible   worlds   approach,">

            <identifier   Org="ISBN:0198537476"   Paper_ID="/61764.html"   Extracted="0198537476"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:0262510901"   Paper_ID="/61764.html"   Extracted="0262510901"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:0262521687"   Paper_ID="/61764.html"   Extracted="0262521687"   DDC="003/.54"   Normalized_DDC="00354"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:0929280008"   Paper_ID="/61764.html"   Extracted="0929280008"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:155860250X"   Paper_ID="/61764.html"   Extracted="155860250X"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:2884491287"   Paper_ID="/61764.html"   Extracted="2884491287"   DDC="620.0028563"   Normalized_DDC="6200028563"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:354019343X"   Paper_ID="/61764.html"   Extracted="354019343X"   />

            <identifier   Org="ISBN:3540440380"   Paper_ID="/61764.html"   Extracted="3540440380"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:3540516654"   Paper_ID="/61764.html"   Extracted="3540516654"   />

            <identifier   Org="ISBN:3540543643"   Paper_ID="/61764.html"   Extracted="3540543643"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:3540635866"   Paper_ID="/61764.html"   Extracted="3540635866"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:3540664955"   Paper_ID="/61764.html"   Extracted="3540664955"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:3540668225"   Paper_ID="/61764.html"   Extracted="3540668225"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:3540671005"   Paper_ID="/61764.html"   Extracted="3540671005"   DDC="004"   Normalized_DDC="004"   Normalized_Weight="0.07692307692307693"   />

            <identifier   Org="ISBN:3540674551"   Paper_ID="/61764.html"   Extracted="3540674551"   DDC="004.2/1"   Normalized_DDC="00421"   Normalized_Weight="0.07692307692307693"   />

      </rec>

      <rec   ID="/35227.html"   Type="inproceedings"   CiteSeer_Book="Proceedings   of   the   Eighth   National   Conference   on   Artificial   Intelligence"   CiteSeer_Volume=""   Title="Learning   Abstraction   Hierarchies   for   Problem   Solving,">

            <identifier   Org="ISBN:0125062303"   Paper_ID="/35227.html"   Extracted="0125062303"   />

            <identifier   Org="ISBN:0262061422"   Paper_ID="/35227.html"   Extracted="0262061422"   DDC="530/.011"   Normalized_DDC="530011"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:026251057X"   Paper_ID="/35227.html"   Extracted="026251057X"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0262510596"   Paper_ID="/35227.html"   Extracted="0262510596"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0262510634"   Paper_ID="/35227.html"   Extracted="0262510634"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0262510715"   Paper_ID="/35227.html"   Extracted="0262510715"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0262611023"   Paper_ID="/35227.html"   Extracted="0262611023"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0780325354"   Paper_ID="/35227.html"   Extracted="0780325354"   />

            <identifier   Org="ISBN:1558601643"   Paper_ID="/35227.html"   Extracted="1558601643"   DDC="658.5"   Normalized_DDC="6585"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:155860247X"   Paper_ID="/35227.html"   Extracted="155860247X"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:1558602488"   Paper_ID="/35227.html"   Extracted="1558602488"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:155860250X"   Paper_ID="/35227.html"   Extracted="155860250X"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:1591404517"   Paper_ID="/35227.html"   Extracted="1591404517"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:2884491988"   Paper_ID="/35227.html"   Extracted="2884491988"   DDC="670/.285/63"   Normalized_DDC="67028563"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:3540278729"   Paper_ID="/35227.html"   Extracted="3540278729"   DDC="004"   Normalized_DDC="004"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:354053816X"   Paper_ID="/35227.html"   Extracted="354053816X"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:3540557113"   Paper_ID="/35227.html"   Extracted="3540557113"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.06666666666666667"   />

      </rec>

      <rec   ID="/670251.html"   Type="inproceedings"   CiteSeer_Book="Reasoning   about   Actions   and   Plans   Proceedings   of   the   1986   Workshop"   CiteSeer_Volume=""   Title="On   the   semantics   of   {STRIPS},">

            <identifier   Org="ISBN:0195147677"   Paper_ID="/670251.html"   Extracted="0195147677"   DDC="128/.33"   Normalized_DDC="12833"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:0387582169"   Paper_ID="/670251.html"   Extracted="0387582169"   DDC="005.1/1"   Normalized_DDC="00511"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:155860250X"   Paper_ID="/670251.html"   Extracted="155860250X"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:1558604804"   Paper_ID="/670251.html"   Extracted="1558604804"   />

            <identifier   Org="ISBN:1567502997"   Paper_ID="/670251.html"   Extracted="1567502997"   DDC="153"   Normalized_DDC="153"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:1591404517"   Paper_ID="/670251.html"   Extracted="1591404517"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:1881526089"   Paper_ID="/670251.html"   Extracted="1881526089"   />

            <identifier   Org="ISBN:3540201017"   Paper_ID="/670251.html"   Extracted="3540201017"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540202560"   Paper_ID="/670251.html"   Extracted="3540202560"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540240594"   Paper_ID="/670251.html"   Extracted="3540240594"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540543643"   Paper_ID="/670251.html"   Extracted="3540543643"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540566678"   Paper_ID="/670251.html"   Extracted="3540566678"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:354058241X"   Paper_ID="/670251.html"   Extracted="354058241X"   DDC="511.3"   Normalized_DDC="5113"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540592865"   Paper_ID="/670251.html"   Extracted="3540592865"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540662464"   Paper_ID="/670251.html"   Extracted="3540662464"   DDC="005.1"   Normalized_DDC="0051"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540678662"   Paper_ID="/670251.html"   Extracted="3540678662"   DDC="006.3/33"   Normalized_DDC="006333"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:3540878025"   Paper_ID="/670251.html"   Extracted="3540878025"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:9051991533"   Paper_ID="/670251.html"   Extracted="9051991533"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.058823529411764705"   />

            <identifier   Org="ISBN:9051992378"   Paper_ID="/670251.html"   Extracted="9051992378"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.058823529411764705"   />

      </rec>

      <rec   ID="/523778.html"   Type="incollection"   CiteSeer_Book="Readings   in   Planning"   CiteSeer_Volume=""   Title="Domain-Independent   Planning:   Representation   and   Plan   Generation,">

            <identifier   Org="ISBN:0262510596"   Paper_ID="/523778.html"   Extracted="0262510596"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0262531356"   Paper_ID="/523778.html"   Extracted="0262531356"   />

            <identifier   Org="ISBN:0792392787"   Paper_ID="/523778.html"   Extracted="0792392787"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0792393104"   Paper_ID="/523778.html"   Extracted="0792393104"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0818686359"   Paper_ID="/523778.html"   Extracted="0818686359"   DDC="620.004250285"   Normalized_DDC="620004250285"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:0897913205"   Paper_ID="/523778.html"   Extracted="0897913205"   />

            <identifier   Org="ISBN:0934613427"   Paper_ID="/523778.html"   Extracted="0934613427"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:1558601643"   Paper_ID="/523778.html"   Extracted="1558601643"   DDC="658.5"   Normalized_DDC="6585"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:155860250X"   Paper_ID="/523778.html"   Extracted="155860250X"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:2884491988"   Paper_ID="/523778.html"   Extracted="2884491988"   DDC="670/.285/63"   Normalized_DDC="67028563"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:3540265511"   Paper_ID="/523778.html"   Extracted="3540265511"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:3540512519"   Paper_ID="/523778.html"   Extracted="3540512519"   />

            <identifier   Org="ISBN:3540543643"   Paper_ID="/523778.html"   Extracted="3540543643"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:3540566678"   Paper_ID="/523778.html"   Extracted="3540566678"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:3540592865"   Paper_ID="/523778.html"   Extracted="3540592865"   DDC="006.3/1"   Normalized_DDC="00631"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:3540636145"   Paper_ID="/523778.html"   Extracted="3540636145"   DDC="006.3/3"   Normalized_DDC="00633"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:9810210574"   Paper_ID="/523778.html"   Extracted="9810210574"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

            <identifier   Org="ISBN:9810226373"   Paper_ID="/523778.html"   Extracted="9810226373"   DDC="006.3"   Normalized_DDC="0063"   Normalized_Weight="0.06666666666666667"   />

      </rec>

      <rec   ID="SELF"   Type="SELF"   CiteSeer_Book="SELF"   CiteSeer_Volume="SELF"   Title="What   Defaults   can   do   that   Hierarchies   Can't">

            <identifier   Org="ISBN:3540410430"   Paper_ID="SELF"   Extracted="3540410430"   DDC="629.8/92"   Normalized_DDC="629892"   Normalized_Weight="0.5"   />

            <identifier   Org="ISBN:3540421858"   Paper_ID="SELF"   Extracted="3540421858"   DDC="629.8/92"   Normalized_DDC="629892"   Normalized_Weight="0.5"   />

      </rec>

</references_metadata>

www.000webhost.com