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Paper Abstract and Keywords
Presentation 2006-06-23 15:00
Simple Rank/Select Dictionaries
Kunihiko Sadakane (Kyushu U)
Abstract (in Japanese) (See Japanese page) 
(in English) Rank/Select directories are data structures to compute,for an ordered set S ⊂{0 , 1 ,...,m −1 },
rank x, S = |{y ∈S |y < =x }|)and select i, S (the i th smallest element in S .These are basic components of
succinct data structures to store strings,trees,graphs,etc.,and many data structures for them have been proposed.
However,in those data structures only asymptotic behavior is considered and their performance for real data is not
satisfactory.In this paper,we propose simple Rank/Select directories.Advantages of them are:(1)the size of the
data structure is small if the number of elements in S is small,(2)the data structure is simple,thus the performance
for real data is superior in terms of size and query time.Experimental results show our data structure is superior to
existing implementations in both size and query time.
Keyword (in Japanese) (See Japanese page) 
(in English) succinct data structures / rank / select / implementation / / / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 128, COMP2006-23, pp. 43-48, June 2006.
Paper # COMP2006-23 
Date of Issue 2006-06-16 (COMP) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee COMP  
Conference Date 2006-06-23 - 2006-06-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Saitama Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To COMP 
Conference Code 2006-06-COMP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Simple Rank/Select Dictionaries 
Sub Title (in English)  
Keyword(1) succinct data structures  
Keyword(2) rank  
Keyword(3) select  
Keyword(4) implementation  
1st Author's Name Kunihiko Sadakane  
1st Author's Affiliation Kyushu University (Kyushu U)
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Speaker Author-1 
Date Time 2006-06-23 15:00:00 
Presentation Time 35 minutes 
Registration for COMP 
Paper # COMP2006-23 
Volume (vol) vol.106 
Number (no) no.128 
Page pp.43-48 
Date of Issue 2006-06-16 (COMP) 

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