From: Diego Olivier Fernandez Pons <Diego-Olivier.FERNANDEZ-PONS@cicrp.jussieu.fr>
To: Mattias Waldau <mattias.waldau@abc.se>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Two types of efficiency (Was Efficiency of 'a list)
Date: Mon, 5 May 2003 09:31:29 +0200 (DST) [thread overview]
Message-ID: <Pine.A41.4.44.0305050916210.1843274-100000@ibm1.cicrp.jussieu.fr> (raw)
In-Reply-To: <041d01c31208$f02327e0$0200a8c0@gateway>
Bonjour,
> Languages like PHP have more advanced built-in datastructures with
> language syntax to support them. In Ocaml, we can create the same
> program, however, there is no syntax support, and we have to add
> declarations like
>
> module StringSet = Set.Make(struct
> type t = string
> let compare = compare
> end) ;;
>
You should not use a set of strings but a trie. There are of course a
lot of ways to implement tries :
- trees of lists
- trees of arrays (or an optimized version with strings)
- ternary trees (balanced or not)
You may even minimize your acyclic automaton using any of the
following algorithms :
- 2 phases algorithm (cf Dominique Revuz PhD thesis)
- Incremental minimization (Incremental construction of a minimal
acyclic finite state automata, Daciuk, Milhov, B. Watson, R. Watson,
Computer linguistics volume 26 number 1 mars 2000)
- minimization by Brzozowki's algorithm
- minimization by Hopcroft's algorithm
For which one of these versions should Caml provide build-in support ?
Diego Olivier
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next prev parent reply other threads:[~2003-05-05 7:32 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-02 19:27 [Caml-list] Efficiency of 'a list Eray Ozkural
2003-05-03 5:43 ` Mattias Waldau
2003-05-03 8:16 ` Ville-Pertti Keinonen
2003-05-03 14:12 ` Vitaly Lugovsky
2003-05-03 18:43 ` Mattias Waldau
2003-05-03 20:01 ` Eray Ozkural
2003-05-03 23:17 ` Eray Ozkural
2003-05-04 2:08 ` cashin
2003-05-04 4:08 ` alc
2003-05-04 5:32 ` Ed L Cashin
2003-05-04 6:46 ` [Caml-list] Two types of efficiency (Was Efficiency of 'a list) Mattias Waldau
2003-05-04 7:35 ` John Max Skaller
2003-05-04 11:52 ` Olivier Andrieu
2003-05-05 11:04 ` John Max Skaller
2003-05-04 16:48 ` brogoff
2003-05-04 7:43 ` Ville-Pertti Keinonen
2003-05-04 12:50 ` Eray Ozkural
2003-05-04 12:48 ` Eray Ozkural
2003-05-05 7:31 ` Diego Olivier Fernandez Pons [this message]
2003-05-05 11:11 ` Mattias Waldau
2003-05-05 13:17 ` John Max Skaller
2003-05-05 11:49 ` Eray Ozkural
2003-05-05 11:57 ` Yaron M. Minsky
2003-05-05 13:32 ` John Max Skaller
2003-05-06 2:49 ` Nicolas Cannasse
2003-05-06 12:30 ` Diego Olivier Fernandez Pons
2003-05-07 2:05 ` Nicolas Cannasse
2003-05-05 16:38 ` Diego Olivier Fernandez Pons
2003-05-05 18:05 ` Eray Ozkural
2003-05-06 13:28 ` Diego Olivier Fernandez Pons
2003-05-13 11:35 ` [Caml-list] Data Structure Libraries (was: Two types of efficiency) Oleg Trott
2003-05-04 7:55 ` [Caml-list] Efficiency of 'a list Ville-Pertti Keinonen
2003-05-04 10:56 ` Neel Krishnaswami
2003-05-04 12:56 ` Eray Ozkural
2003-05-04 13:35 ` Falk Hueffner
2003-05-04 12:38 ` Eray Ozkural
2003-05-04 8:07 ` Ville-Pertti Keinonen
2003-05-04 15:54 ` Ed L Cashin
2003-05-05 23:52 ` Garry Hodgson
2003-05-03 20:03 ` Eray Ozkural
2003-05-03 21:13 ` Lauri Alanko
2003-05-03 22:03 ` Eray Ozkural
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