Xcerpt: a rule-based query and transformation language for the web:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
2004
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | München, Univ., Diss., 2004 (Nicht für den Austausch) |
| Beschreibung: | VIII, 249 S. graph. Darst. 30 cm |
Internformat
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| 245 | 1 | 0 | |a Xcerpt: a rule-based query and transformation language for the web |c von Sebastian Schaffert |
| 264 | 1 | |c 2004 | |
| 300 | |a VIII, 249 S. |b graph. Darst. |c 30 cm | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
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| 500 | |a München, Univ., Diss., 2004 (Nicht für den Austausch) | ||
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| 943 | 1 | |a oai:aleph.bib-bvb.de:BVB01-013115846 | |
Datensatz im Suchindex
| _version_ | 1816445345467465728 |
|---|---|
| adam_text |
CONTENTS
I
INTRODUCTION
AND
MOTIVATION
1
1
INTRODUCTION
3
1.1
MOTIVATION
.
3
1.2
OUTLINE
OF
THIS
THESIS
.
5
1.3
DESIGN PRINCIPLES
OF
XCERPT
.
5
1.3.1
REFERENTIAL
TRANSPARENCY
AND
ANSWER
CLOSEDNESS
.
5
1.3.2
ANSWERS
AS
ARBITRARY
XML
DATA
.
6
1.3.3
PATTERN-BASED
QUERIES
.
6
1.3.4
INCOMPLETE
SPECIFICATION
OF
QUERY
PATTERNS
.
9
1.3.5
RULES
.
10
1.3.6
FORWARD
AND
BACKWARD
CHAINING
.
11
1.3.7
SEPARATION
OF
QUERYING
AND
CONSTRUCTION
.
12
1.3.8
REASONING
CAPABILITIES
.
13
2
DATA
REPRESENTATION
ON
THE
WEB
15
2.1
SEMISTRUCTURED
DATA
.
15
2.1.1
TRADITIONAL
DATABASE
SYSTEMS
.
15
2.1.2
SEMISTRUCTURED
DATA
.
16
2.1.3
OTHER
LANGUAGES
FOR
REPRESENTING
SEMISTRUCTURED
DATA
.
18
2.2
XML
-
THE EXTENSIBLE MARKUP
LANGUAGE
.
20
2.2.1
MARKUP
LANGUAGES
.
20
2.2.2
A
GENERIC
MARKUP
LANGUAGE
FOR
THE
WEB
.
21
2.2.3
ANATOMY
OF
AN
XML
DOCUMENT
.
22
2.2.4
XML
SCHEMA
LANGUAGES
.
25
2.2.5
XML
REFERENCES:
ID/IDREF
.
29
2.2.6
XML
NAMESPACES
.
30
2.3
XML,
SEMISTRUCTURED
EXPRESSIONS
AND
SEMISTRUCTURED
DATA
.
31
2.4
THREE
SCENARIOS
FOR
QUERYING
SEMISTRUCTURED
DATA
.
32
2.4.1
STUDENT
DATABASE
.
32
2.4.2
BOOKSTORE
.
33
2.4.3
DOCUMENT-CENTRIC:
PHD
THESIS
.
35
2.5
GRAPH
REPRESENTATION
OF
SEMISTRUCTURED
DATA
.
38
2.6
ROOTED
GRAPH
SIMULATION
-
A
SIMILARITY
RELATION
FOR
ROOTED
GRAPHS
.
39
3
WEB
QUERY
LANGUAGES
43
3.1
DATABASE
VS.
WEB
QUERY
LANGUAGES
.
43
3.2
DESIRABLE
CHARACTERISTICS
OF
WEB
QUERY
LANGUAGES
.
44
3.3
EXISTING
WEB
QUERY
LANGUAGES
.
46
3.3.1
XPATH
.
46
3.3.2
XSL/XSLT
.
48
CONTENTS
3.3.3
XQUERY
.
51
3.3.4
SURVEY
OVER
OTHER
WEB
QUERY
LANGUAGES
.
56
II
THE
LANGUAGE
XCERPT
61
4
XCERPT
63
4.1
TWO
SYNTAXES
.
63
4.2
DATA
TERMS:
AN
ABSTRACTION
FOR
DATA
ON
THE
WEB
.
64
4.2.1
TERM
SPECIFICATIONS
.
65
4.2.2
REFERENCES
.
66
4.2.3
ATTRIBUTES
.
66
4.2.4
NAMESPACES
.
67
4.3
QUERY
TERMS:
PATTERNS
FOR
SELECTING
DATA
.
69
4.3.1
INCOMPLETENESS
.
69
4.3.2
TERM
VARIABLES,
LABEL/NAMESPACE
VARIABLES
AND
THE
-
-CONSTRUCT
.
71
4.3.3
POSITION
SPECIFICATION
AND
POSITIONAL
VARIABLES
.
73
4.3.4
SUBTERM
NEGATION:
WITHOUT
.
74
4.3.5
REGULAR
EXPRESSIONS
.
76
4.4
QUERY
EVALUATION:
GROUND
QUERY
TERM
SIMULATION
.
78
4.4.1
GROUND
QUERY
TERMS
AND
GROUND
QUERY
TERM
GRAPHS
.
79
4.4.2 TERM
SEQUENCES
AND
SUCCESSORS
.
80
4.4.3
GROUND
QUERY
TERM
SIMULATION
.
81
4.4.4
SIMULATION
ORDER
AND
SIMULATION
EQUIVALENCE
.
87
4.5
QUERIES
.
88
4.5.1
RESOURCE
DECLARATIONS
.
88
4.5.2
CONJUNCTIONS
AND
DISJUNCTIONS
OF
QUERIES
.
88
4.5.3 QUERY
NEGATION:
NOT
.
89
4.5.4
CONDITIONS
.
90
4.6
CONSTRUCT
TERMS:
PATTERNS
FOR
CONSTRUCTING
DATA
.
92
4.6.1
VARIABLES
.
92
4.6.2
GROUPING
AND
SORTING:
ALL
AND
SOME
.
93
4.6.3
FUNCTIONS
AND
AGGREGATIONS
.
99
4.6.4
OPTIONAL
SUBTERMS:
OPTIONAL
.
99
4.7
CONSTRUCT-QUERY
RULES
(OR
VIEWS)
.
102
4.7.1
RULE
CHAINING
.
103
4.7.2
GOALS
.
105
5
XCERPT
USE
CASES
107
5.1
RESTRUCTURING
DATA
.
107
5.1.1
LIST
OF
AUTHORS
VS.
LIST
OF
TITLES
.
107
5.1.2
RESOLVING
ID/IDREF
REFERENCES
.
108
5.1.3
COMPLETING
AN
HTML
TABLE
.
109
5.1.4
LIST
OF
STUDENTS
.
ILL
5.1.5
SEPARATION
OF
CONCERNS
.
113
5.2
QUERYING
THE
WEB
.
115
5.2.1
PERSONAL
PORTAL
PAGE:
NEWS
AND
WEATHER
.
116
5.2.2
WEB
CRAWLER
.
119
5.3
SEMANTIC
WEB
REASONING
.
124
5.3.1
CLIQUE
OF
FRIENDS
.
124
5.3.2
ONTOLOGY
REASONING:
THE
BOOK
ONTOLOGY
.
126
VI
SEBASTIAN
SCHAFFERT
CONTENTS
6
RANGE
RESTRICTEDNESS,
STANDARDISATION
APART,
AND
STRATIFICATION
133
6.1
PRELIMINARIES
.
133
6.2
RANGE
RESTRICTEDNESS
.
134
6.2.1
POLARITY
OF
SUBTERMS
.
134
6.2.2
RANGE
RESTRICTEDNESS
.
136
6.3
STANDARDISATION
APART
(OR
RECTIFICATION)
.
137
6.4
STRATIFICATION
FOR
GROUPING
CONSTRUCTS
AND
NEGATION
.
137
6.4.1
GROUPING
STRATIFICATION
.
138
6.4.2
NEGATION
STRATIFICATION
.
140
6.4.3
FULL
STRATIFICATION:
COMBINING
GROUPING
STRATIFICATION
AND
NEGATION
STRATIFICATION
.
142
7
DECLARATIVE
SEMANTICS
143
7.1
PRELIMINARIES
.
143
7.2
TERMS
AS
FORMULAS
.
144
7.2.1
TERM
FORMULAS
.
144
7.2.2
XCERPT
PROGRAMS
AS
FORMULAS
.
144
7.3
SUBSTITUTIONS
AND
SUBSTITUTION
SETS
.
145
7.3.1
PRELIMINARY
NOTIONS
.
145
7.3.2
APPLICATION
TO
QUERY
TERMS
.
147
7.3.3
APPLICATION
TO
CONSTRUCT
TERMS
.
148
7.3.4
APPLICATION
TO
QUERY
TERM
FORMULAS
.
150
7.4
INTERPRETATIONS
AND
ENTAILMENT
.
150
7.4.1
INTERPRETATIONS
.
151
7.4.2
SATISFACTION
AND
MODELS
.
151
7.5
FIXPOINT
SEMANTICS
.
153
7.6
REMARKS
.
155
8
OPERATIONAL
SEMANTICS
157
8.1
A
SIMPLE
CONSTRAINT
SOLVER
.
157
8.1.1
DATA
STRUCTURES
AND
FUNCTIONS
.
158
8.1.2
SOLUTION
SET
OF
A
CONSTRAINT
STORE
.
160
8.1.3
CONSTRAINT
SIMPLIFICATION
.
161
8.1.4
CONSISTENCY
VERIFICATION
RULES
.
161
8.1.5
CONSTRAINT
NEGATION
.
162
8.1.6
PROGRAM
EVALUATION
.
164
8.2
SIMULATION
UNIFICATION
.
165
8.2.1
SIMULATION
UNIFIERS
.
165
8.2.2
DECOMPOSITION
RULES
.
166
8.2.3
EXAMPLES
.
173
8.2.4
SOUNDNESS
AND
COMPLETENESS
.
179
8.3
BACKWARD
CHAINING
.
180
8.3.1
DEPENDENCY
CONSTRAINT
.
180
8.3.2
QUERY
UNFOLDING
.
181
8.3.3
EXAMPLES
.
182
8.3.4
SOUNDNESS
AND
COMPLETENESS
.
185
III
CONCLUSION
189
9
PERSPECTIVES
191
9.1
ADVANCED
QUERY
CONSTRUCTS
.
191
9.1.1
ADVANCED
TEXT
PROCESSING
.
191
9.1.2
DUPLICATE
ELIMINATION
.
192
9.1.3
ADVANCED
FILTER
AND
EXCLUSION
MECHANISMS
.
192
SEBASTIAN SCHAFFERT
VII
CONTENTS
9.1.4
ADVANCED
CONSTRAINT
SOLVING
.
194
9.2
SUPPORT
FOR
SPECIAL
THEORIES
AND
REASONERS
.
194
9.3
META-PROGRAMMING
AND
META-QUERYING
.
195
9.3.1
META-PROGRAMMING
ON
THE
WEB
.
195
9.3.2
SUPPORTING
META-PROGRAMMING
IN
XCERPT
.
196
9.4
DISTRIBUTED
AND
PEER-TO-PEER
EVALUATION
.
197
9.4.1
DISTRIBUTED
EVALUATION
.
197
9.4.2
PEER-TO-PEER
EVALUATION
.
198
9.5
OPTIMISED
EVALUATION
AND
IMPLEMENTATION
.
198
9.5.1
IDENTIFYING
COMPLEXITY
OF
LANGUAGE
PARTS
.
198
9.5.2
SIMULATION
UNIFICATION
.
198
9.5.3
RULE
CHAINING
.
199
9.5.4
CONSTRAINT
SOLVER
.
200
9.5.5
VIRTUAL
MACHINE
.
200
9.6
TERM
FORMULAS
AS
INTEGRITY
CONSTRAINTS
.
200
10
CONCLUSION
203
IV
APPENDIX
205
A
A
PROTOTYPICAL
RUNTIME
SYSTEM
207
A.L
USAGE
OF
THE
PROTOTYPE
.
207
A.
1.1
COMMAND
LINE
SWITCHES
.
208
A.2
OVERALL
STRUCTURE
OF
THE
SOURCE
CODE
.
210
A.3
MODULE
XCERPT.DATA:
DATA
STRUCTURES
.
211
A.3.1
TERM.HS:
DATA
STRUCTURES
FOR
TERMS
.
211
A.3.2
PROGRAM.HS:
DATA
STRUCTURES
FOR
PROGRAMS
.
213
A.4
MODULE
XCERPT.IO:
INPUT/OUTPUT
.
214
A.5
MODULE
XCERPT.PARSER:
PARSER
.
215
A.5.1
XCERPT.PARSER.XCERPT:
XCERPT
VI
AND
V2
PARSER
.
215
A.5.2
XCERPT.PARSER.XML:
XML
PARSER
.
216
A.5
.3
XCERPT.PARSER.HTML:
HTML
PARSER
.
216
A.6
MODULE
XCERPT.SHOW:
OUTPUT
FORMATTING
.
217
A.7
MODULE
XCERPT.ENGINENG:
PROGRAM
EVALUATION
.
218
A.7.1
CONSTRAINT
SOLVER
.
218
A.7.
2
UNIFICATION
.
220
A.7.3
BACKWARD
CHAINING
.
224
A.8
MODULE
XCERPT.METHODS:
USER-DEFINED
FUNCTIONS
.
225
B
PROOFS
227
B.L
PROOF
OF
THEOREM
4.9
.
227
B.2
PROOF
OF
THEOREM
8.6
.
230
B.3
PROOF
OF
LEMMA
8.7
.
234
LIST
OF
EXAMPLES
237
INDEX
239
BIBLIOGRAPHY
241
CURRICULUM
VITAE
248
VIII
SEBASTIAN
SCHAFFERT |
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| author | Schaffert, Sebastian 1976- |
| author_GND | (DE-588)129654469 |
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| ctrlnum | (OCoLC)76649508 (DE-599)BVBBV019790067 |
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| indexdate | 2024-11-22T17:41:11Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-013115846 |
| oclc_num | 76649508 |
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| physical | VIII, 249 S. graph. Darst. 30 cm |
| publishDate | 2004 |
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| publishDateSort | 2004 |
| record_format | marc |
| spelling | Schaffert, Sebastian 1976- Verfasser (DE-588)129654469 aut Xcerpt: a rule-based query and transformation language for the web von Sebastian Schaffert 2004 VIII, 249 S. graph. Darst. 30 cm txt rdacontent n rdamedia nc rdacarrier München, Univ., Diss., 2004 (Nicht für den Austausch) Abfragesprache (DE-588)4134011-5 gnd rswk-swf World Wide Web (DE-588)4363898-3 gnd rswk-swf Semantic Web (DE-588)4688372-1 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content World Wide Web (DE-588)4363898-3 s Abfragesprache (DE-588)4134011-5 s DE-604 Semantic Web (DE-588)4688372-1 s DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=013115846&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Schaffert, Sebastian 1976- Xcerpt: a rule-based query and transformation language for the web Abfragesprache (DE-588)4134011-5 gnd World Wide Web (DE-588)4363898-3 gnd Semantic Web (DE-588)4688372-1 gnd |
| subject_GND | (DE-588)4134011-5 (DE-588)4363898-3 (DE-588)4688372-1 (DE-588)4113937-9 |
| title | Xcerpt: a rule-based query and transformation language for the web |
| title_auth | Xcerpt: a rule-based query and transformation language for the web |
| title_exact_search | Xcerpt: a rule-based query and transformation language for the web |
| title_full | Xcerpt: a rule-based query and transformation language for the web von Sebastian Schaffert |
| title_fullStr | Xcerpt: a rule-based query and transformation language for the web von Sebastian Schaffert |
| title_full_unstemmed | Xcerpt: a rule-based query and transformation language for the web von Sebastian Schaffert |
| title_short | Xcerpt: a rule-based query and transformation language for the web |
| title_sort | xcerpt a rule based query and transformation language for the web |
| topic | Abfragesprache (DE-588)4134011-5 gnd World Wide Web (DE-588)4363898-3 gnd Semantic Web (DE-588)4688372-1 gnd |
| topic_facet | Abfragesprache World Wide Web Semantic Web Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=013115846&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT schaffertsebastian xcerptarulebasedqueryandtransformationlanguagefortheweb |