Mailing list for all users of the OCaml language and system.
 help / color / mirror / Atom feed
From: Anthony Tavener <anthony.tavener@gmail.com>
To: Yoriyuki Yamagata <yoriyuki.y@gmail.com>
Cc: Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] Succinct data structures
Date: Thu, 25 Sep 2014 09:57:57 -0600	[thread overview]
Message-ID: <CAN=ouMRLuWWhT4XHSoNX1dzC99_wZVFq6A4fEm0Yappyiv391Q@mail.gmail.com> (raw)
In-Reply-To: <CALdQWQ4we0DKwu9DghSbNJeQ8o+dhwoEd6ke6WDCsTy0OCADoA@mail.gmail.com>

[-- Attachment #1: Type: text/plain, Size: 1584 bytes --]

I'd never heard of these terms before. After some searching and finding
papers
which describe what LOUDS (level order unary degree sequence) is, I realize
I
use these (in a trivial form). I used the term "hierarchical bitfield", and
over the years I've tried searching for the technique using various terms --
with no success. I must say I never would have guessed "level order unary
degree sequence". :)

So, thank you for finally providing a name, and a means to find other work
using this structure. My uses are in games: succinctly representing
hierarchical data in a manner which I can do fast bitmatches.
Unfortunately, I
don't have a nice library for building and working with these
datastructures,
as my uses are fairly limited: trees that can be encoded within 64 bits.

Hopefully someone out there knows of a library in OCaml, but if not, the
"bitstring" library might be a useful building block... or, of course, the
option of binding to a C library.

Good luck! Sorry I couldn't be more helpful, while you've helped me by
asking
a question.


On Thu, Sep 25, 2014 at 6:48 AM, Yoriyuki Yamagata <yoriyuki.y@gmail.com>
wrote:

> Hi, list,
>
> Does anyone try to implement succinct data structures, such as
> compressed suffix array or LOUDS in OCaml?  The search does not show
> anything.
>
> --
> Yoriyuki Yamagata
> http://yoriyuki.info/
>
> --
> Caml-list mailing list.  Subscription management and archives:
> https://sympa.inria.fr/sympa/arc/caml-list
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>

[-- Attachment #2: Type: text/html, Size: 2521 bytes --]

      reply	other threads:[~2014-09-25 15:57 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-25 12:48 Yoriyuki Yamagata
2014-09-25 15:57 ` Anthony Tavener [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAN=ouMRLuWWhT4XHSoNX1dzC99_wZVFq6A4fEm0Yappyiv391Q@mail.gmail.com' \
    --to=anthony.tavener@gmail.com \
    --cc=caml-list@inria.fr \
    --cc=yoriyuki.y@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox