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From: Pieter Wuille <pieter.wuille@gmail.com>
To: Jeff Garzik <jgarzik@bitpay.com>
Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Combining bloom filters?
Date: Sat, 17 Aug 2013 16:15:31 +0200	[thread overview]
Message-ID: <CAPg+sBhHmXx_qV7i-9rSBHsV7U7AET7b+FXecRuROMF=R2UJhA@mail.gmail.com> (raw)
In-Reply-To: <CAJHLa0PfHa9Xinv0rdGUK8PRxR5NMC6h2an2ZGgCaTi_DpFrfQ@mail.gmail.com>

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If both constructed bloom filters use the same seed and the same number of
hash functions, yes. Assuming the input filters were optimal for a given FP
rate, the resulting filter will be worse.

-- 
Pieter
 On 17 Aug 2013 16:01, "Jeff Garzik" <jgarzik@bitpay.com> wrote:

> Consider wallet A builds bloom filter A' and wallet B builds bloom
> filter B'.  Can A' and B' be or'd together to form a single bloom
> filter C' ?
>
> --
> Jeff Garzik
> Senior Software Engineer and open source evangelist
> BitPay, Inc.      https://bitpay.com/
>
>
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      parent reply	other threads:[~2013-08-17 14:15 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-17 14:00 [Bitcoin-development] Combining bloom filters? Jeff Garzik
2013-08-17 14:03 ` bitcoin-list
2013-08-17 14:15 ` Pieter Wuille [this message]

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