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Semantic Search Focus: IR on Structured Data
Published on Sep 20, 20115187 Views
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Chapter list
Semantic Search Focus: IR on Structured Data00:00
Agenda00:20
Why Semantic Search?01:26
Why Semantic Search? (1)01:29
Why Semantic Search? (2)04:36
Vocabularies (1)06:20
Vocabularies (2)06:40
Vocabularies (3)07:06
Structured Data (1)07:32
Structured Data (2)08:47
Metadata (1)09:43
Metadata (2)10:34
Metadata (3)10:52
What is Semantic Search?11:56
Structure (1)12:11
Semantics12:34
Explicit Semantics13:48
Search tasks – document retrieval16:34
Search tasks – data retrieval18:18
Search tasks - Addressing complex information needs19:36
Search tasks - e.g. combination of data and document retrieval22:12
Core search problems (1)23:54
Core search problems (2)25:13
Core search problems (3)26:26
Core search problems (4)27:57
Search30:44
Semantic Search (1)33:31
Semantic Search (2)34:58
Semantic Search (3)35:31
Semantic Search (4)35:54
Semantic Search (5)37:39
Focus of the following technical parts38:06
Matching39:57
Structure (2)40:23
Keyword search approaches41:25
Keyword search on hybrid data graphs43:59
Term matching44:24
Content matching45:30
Structure matching48:34
Structure (3)52:41
Matching in keyword search – schema-based53:15
Structure (4)56:23
Matching in keyword search – schema-agnostic56:27
Structure (5)01:00:39
Online search – top-k exploration01:01:02
Online search – dynamic programming01:05:18
Structure (6)01:07:57
Index-based (1)01:08:18
Index-based – path index01:09:15
Index-based (2)01:12:37
Index-based (3)01:16:20
Index-based (4)01:18:00
Index-based (5)01:20:51
Index-based (6)01:22:21
Index-based (7)01:23:59
Taxonomy of matching approaches01:24:31
Ranking01:25:10
Structure (7)01:25:12
Ranking paradigms01:25:58
Features (1)01:27:22
Features (2)01:27:36
Content-based features – frequency01:29:20
Structure-based features – links01:29:46
Structure-based features – proximity01:32:12
Structured-content-based model (1)01:35:45
Structured-content-based model (2)01:36:50
Structured-content-based model (3)01:40:09
Structured-content-based model (4)01:41:35
Ranking Steiner tree / join result tuples (JRT)01:42:13
Taxonomy of ranking approaches01:42:39
Conclusions01:42:43
Conclusions (1)01:42:44
…Selected challenges01:43:26
References01:43:57
References (1)01:43:58
References (2)01:43:59
Thanks!01:44:01