Ordered and unordered tree inclusion:
Abstract: "We consider the following problem: Given labeled trees P and T, can P be obtained from T by deleting nodes? Deleting a node v entails removing all edges incident to v, and if v has a parent u, replacing the edge from u to v by edges from u to the children of v. The problem is motivat...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Helsinki
1991
|
| Series: | Tietojenkäsittelyopin Laitos <Helsinki>: [Series of publications / A]
1991,4 |
| Subjects: | |
| Summary: | Abstract: "We consider the following problem: Given labeled trees P and T, can P be obtained from T by deleting nodes? Deleting a node v entails removing all edges incident to v, and if v has a parent u, replacing the edge from u to v by edges from u to the children of v. The problem is motivated by the study of query languages for structured text data bases. Simple solutions to this problem require exponential time. For ordered trees we present an algorithm that requires [formula] time and space. We also consider the corresponding problem for unordered trees and give a proof of its NP-completeness." |
| Physical Description: | 22 Bl. |
Staff View
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| 100 | 1 | |a Kilpeläinen, Pekka |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Ordered and unordered tree inclusion |c Pekka Kilpeläinen ; Heikki Mannila |
| 264 | 1 | |a Helsinki |c 1991 | |
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| 490 | 1 | |a Tietojenkäsittelyopin Laitos <Helsinki>: [Series of publications / A] |v 1991,4 | |
| 520 | 3 | |a Abstract: "We consider the following problem: Given labeled trees P and T, can P be obtained from T by deleting nodes? Deleting a node v entails removing all edges incident to v, and if v has a parent u, replacing the edge from u to v by edges from u to the children of v. The problem is motivated by the study of query languages for structured text data bases. Simple solutions to this problem require exponential time. For ordered trees we present an algorithm that requires [formula] time and space. We also consider the corresponding problem for unordered trees and give a proof of its NP-completeness." | |
| 650 | 4 | |a Trees (Graph theory) | |
| 700 | 1 | |a Mannila, Heikki |e Verfasser |4 aut | |
| 810 | 2 | |a A] |t Tietojenkäsittelyopin Laitos <Helsinki>: [Series of publications |v 1991,4 |w (DE-604)BV000904448 |9 1991,4 | |
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Record in the Search Index
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| author | Kilpeläinen, Pekka Mannila, Heikki |
| author_facet | Kilpeläinen, Pekka Mannila, Heikki |
| author_role | aut aut |
| author_sort | Kilpeläinen, Pekka |
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| building | Verbundindex |
| bvnumber | BV010585978 |
| ctrlnum | (OCoLC)31155453 (DE-599)BVBBV010585978 |
| format | Book |
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| id | DE-604.BV010585978 |
| illustrated | Not Illustrated |
| indexdate | 2024-07-09T17:55:29Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-007058339 |
| oclc_num | 31155453 |
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| owner | DE-91G DE-BY-TUM |
| owner_facet | DE-91G DE-BY-TUM |
| physical | 22 Bl. |
| publishDate | 1991 |
| publishDateSearch | 1991 |
| publishDateSort | 1991 |
| record_format | marc |
| series2 | Tietojenkäsittelyopin Laitos <Helsinki>: [Series of publications / A] |
| spelling | Kilpeläinen, Pekka Verfasser aut Ordered and unordered tree inclusion Pekka Kilpeläinen ; Heikki Mannila Helsinki 1991 22 Bl. txt rdacontent n rdamedia nc rdacarrier Tietojenkäsittelyopin Laitos <Helsinki>: [Series of publications / A] 1991,4 Abstract: "We consider the following problem: Given labeled trees P and T, can P be obtained from T by deleting nodes? Deleting a node v entails removing all edges incident to v, and if v has a parent u, replacing the edge from u to v by edges from u to the children of v. The problem is motivated by the study of query languages for structured text data bases. Simple solutions to this problem require exponential time. For ordered trees we present an algorithm that requires [formula] time and space. We also consider the corresponding problem for unordered trees and give a proof of its NP-completeness." Trees (Graph theory) Mannila, Heikki Verfasser aut A] Tietojenkäsittelyopin Laitos <Helsinki>: [Series of publications 1991,4 (DE-604)BV000904448 1991,4 |
| spellingShingle | Kilpeläinen, Pekka Mannila, Heikki Ordered and unordered tree inclusion Trees (Graph theory) |
| title | Ordered and unordered tree inclusion |
| title_auth | Ordered and unordered tree inclusion |
| title_exact_search | Ordered and unordered tree inclusion |
| title_full | Ordered and unordered tree inclusion Pekka Kilpeläinen ; Heikki Mannila |
| title_fullStr | Ordered and unordered tree inclusion Pekka Kilpeläinen ; Heikki Mannila |
| title_full_unstemmed | Ordered and unordered tree inclusion Pekka Kilpeläinen ; Heikki Mannila |
| title_short | Ordered and unordered tree inclusion |
| title_sort | ordered and unordered tree inclusion |
| topic | Trees (Graph theory) |
| topic_facet | Trees (Graph theory) |
| volume_link | (DE-604)BV000904448 |
| work_keys_str_mv | AT kilpelainenpekka orderedandunorderedtreeinclusion AT mannilaheikki orderedandunorderedtreeinclusion |