| Presentation | 2011-12-16 A Method to Reduce Remote Accesses in L_1-Distance-based Distributed Locality-Sensitive Hashing and Its Implementation Evaluation Hisashi KOGA, Toshinori WATANABE, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Locality-Sensitive Hashing (LSH) is an approximate nearest-neighbor search algorithm for high-dimensional data. Though LSH processes a query very fast, LSH consumes much space, because it uses multiple hash tables. Therefore, in applying LSH to a large dataset, implementing LSH in distributed environments is crucial. One simple method is to have every node keep the same number of hash tables evenly. However, this method increases remote accesses, because many nodes must be accessed to access all the hash tables. Thus, this simple method suffers from the long query response time, when the communication delay is the bottleneck. This paper proposes to reduce remote accesses by assigning the hash buckets from different hash tables to the same node, if they store the same points. This strategy decreases remote accesses, since multiple hash buckets to be accessed are accessed with a single remote access. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Locality-Sensitive Hashing / Hash Bucket / Remote Access / Distributed Environment / Response Time |
| Paper # | DE2011-40 |
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| Conference Information | |
| Committee | DE |
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| Conference Date | 2011/12/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Data Engineering (DE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Method to Reduce Remote Accesses in L_1-Distance-based Distributed Locality-Sensitive Hashing and Its Implementation Evaluation |
| Sub Title (in English) | |
| Keyword(1) | Locality-Sensitive Hashing |
| Keyword(2) | Hash Bucket |
| Keyword(3) | Remote Access |
| Keyword(4) | Distributed Environment |
| Keyword(5) | Response Time |
| 1st Author's Name | Hisashi KOGA |
| 1st Author's Affiliation | Graduate School of Information Systems, University of Electro-Communications() |
| 2nd Author's Name | Toshinori WATANABE |
| 2nd Author's Affiliation | Graduate School of Information Systems, University of Electro-Communications |
| Date | 2011-12-16 |
| Paper # | DE2011-40 |
| Volume (vol) | vol.111 |
| Number (no) | 361 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |