### Abstract

The edit-distance between two strings is the smallest number of operations required to transform one string into the other. The edit-distance problem for two languages is to find a pair of strings, each of which is from different language, with the minimum edit-distance. We consider the edit-distance problem for a regular language and a context-free language and present an efficient algorithm that finds an optimal alignment of two strings, each of which is from different language. Moreover, we design a faster algorithm for the edit-distance problem that only finds the minimum number of operations of the optimal alignment.

Original language | English |
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Title of host publication | Developments in Language Theory - 16th International Conference, DLT 2012, Proceedings |

Pages | 85-96 |

Number of pages | 12 |

DOIs | |

Publication status | Published - 2012 Aug 20 |

Event | 16th International Conference on Developments in Language Theory, DLT 2012 - Taipei, Taiwan, Province of China Duration: 2012 Aug 14 → 2012 Aug 17 |

### Publication series

Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 7410 LNCS |

ISSN (Print) | 0302-9743 |

ISSN (Electronic) | 1611-3349 |

### Other

Other | 16th International Conference on Developments in Language Theory, DLT 2012 |
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Country | Taiwan, Province of China |

City | Taipei |

Period | 12/8/14 → 12/8/17 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Theoretical Computer Science
- Computer Science(all)

### Cite this

*Developments in Language Theory - 16th International Conference, DLT 2012, Proceedings*(pp. 85-96). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 7410 LNCS). https://doi.org/10.1007/978-3-642-31653-1_9

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*Developments in Language Theory - 16th International Conference, DLT 2012, Proceedings.*Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 7410 LNCS, pp. 85-96, 16th International Conference on Developments in Language Theory, DLT 2012, Taipei, Taiwan, Province of China, 12/8/14. https://doi.org/10.1007/978-3-642-31653-1_9

**Computing the edit-distance between a regular language and a context-free language.** / Han, Yo Sub; Ko, Sang Ki; Salomaa, Kai.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Computing the edit-distance between a regular language and a context-free language

AU - Han, Yo Sub

AU - Ko, Sang Ki

AU - Salomaa, Kai

PY - 2012/8/20

Y1 - 2012/8/20

N2 - The edit-distance between two strings is the smallest number of operations required to transform one string into the other. The edit-distance problem for two languages is to find a pair of strings, each of which is from different language, with the minimum edit-distance. We consider the edit-distance problem for a regular language and a context-free language and present an efficient algorithm that finds an optimal alignment of two strings, each of which is from different language. Moreover, we design a faster algorithm for the edit-distance problem that only finds the minimum number of operations of the optimal alignment.

AB - The edit-distance between two strings is the smallest number of operations required to transform one string into the other. The edit-distance problem for two languages is to find a pair of strings, each of which is from different language, with the minimum edit-distance. We consider the edit-distance problem for a regular language and a context-free language and present an efficient algorithm that finds an optimal alignment of two strings, each of which is from different language. Moreover, we design a faster algorithm for the edit-distance problem that only finds the minimum number of operations of the optimal alignment.

UR - http://www.scopus.com/inward/record.url?scp=84865039678&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865039678&partnerID=8YFLogxK

U2 - 10.1007/978-3-642-31653-1_9

DO - 10.1007/978-3-642-31653-1_9

M3 - Conference contribution

AN - SCOPUS:84865039678

SN - 9783642316524

T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

SP - 85

EP - 96

BT - Developments in Language Theory - 16th International Conference, DLT 2012, Proceedings

ER -