similar to: floating-point issues with set_sort_by_relevance_then_value? (1.2.3, BM25 k1=0)

I was adding the calculations for a lower bound to get_sumpart() (DLH has no term independent component) when I realized that the same lower bound will be calculated for each term-docment pair that get_sumpart is called pair which basically reduces efficiency. How do I calculate the lower bound for a term only once and then use it ? -Regards -Aarsh On Fri, Jun 21, 2013 at 4:41 PM, Olly Betts

Steps to reproduce: - Enable CLucene FTS in Dovecot; - Open mailbox with MUA; - Search for message with any text; - IMAP session crash. OS: Gentoo Base System release 2.6 Version: FTS: dev-cpp/clucene-2.3.3.4-r6 IMAP: net-mail/dovecot-2.3.2.1 LIBC: sys-libs/musl-1.1.21 Dovecot FTS config: plugin { fts = lucene fts_lucene = whitespace_chars=@. normalize no_snowball fts_autoindex=yes

I am suffering for slow searching performance on Xapian. I am using Xapian for indexing about 150,000,000 documents. It was implemented in C++; The performance of searching was not that fast. e.g. Searching a query, which includes about 20 terms, needs 2 secs avg. For searching, I followed such steps: 1. construct a QueryParser for certain string 2. parse the query to get a Xapian::Query

Hi, I'm trying to use custom weight with python binding. My test code is like this. class TinkerWeight(xapian.Weight): def __init__(self): pass def name(self): return "Tinker" def serialize(self): return "" def get_sumpart(*args): return 1 def get_maxpart(*args): return 1 def get_sumextra(*args):

Hi guys, I'm trying to improve the search results of our collection by tuning the parameters in the BM25 weighting schema. Since our collection includes several databases, such as for pictures, websites, etc., I would like to use different values of the same schema to calculate the weights. Yet, rebuilding each time after the change was done to the head file seems not an optimal approach and

Hello guys, as discussed on IRC, I have written some code for better parsing of BM25 parameters in Omega. If no parameters are specified ,it defaults all of them. However, if there some are specified and some are not or if the invalid values are given for any of them,it throws an error. https://github.com/aarshkshah1992/xapian/commit/ac0a11f5d8ff975fad1e96e63764eab9b04dfcfb -Regards -Aarsh

Hi Alexandre, On Fri, Jan 31, 2014 at 10:16 PM, Alexandre Courbot <acourbot at nvidia.com> wrote: > I guess my email address might surprise some of you, so let me anticipate some > questions you might have. :P Yes, this work is endorsed by NVIDIA. Several other > NVIDIAns (CC'd), including core GPU experts, have provided significant technical > guidance and will continue

On Sun, Feb 2, 2014 at 9:44 PM, Alexandre Courbot <acourbot at nvidia.com> wrote: > One beginner question: is it appropriate to send kernel patches to the > nouveau list in addition to dri-devel? The moderation messages I receive > make me think that this list might rather be intended for general > discussion. I usually do. The main thing is to make sure that they're To:

Hi [..snip..] > Finally, support for probing GK20A is added in the last 2 patches. It should be > noted that contrary to what Nouveau currently expects, GK20A does not embed any > display hardware (that part being handled by tegradrm). So this driver should > really be only used through DRM render-nodes and collaborate with the display > driver using PRIME. I have not yet figured

On Sat, Feb 1, 2014 at 1:16 PM, Alexandre Courbot <acourbot at nvidia.com> wrote: > Hello everyone, Hey Alex, The series looks pretty good to me. I'll reply to the relevant patches with any minor nit-picks on top of what's already been said by others. Thank you, and welcome to Nouveau :) Ben. > > GK20A is the Kepler-based GPU used in the upcoming Tegra K1 chips. The

On 02/03/2014 04:10 AM, Ilia Mirkin wrote: > Hi Alexandre, > > On Fri, Jan 31, 2014 at 10:16 PM, Alexandre Courbot <acourbot at nvidia.com> wrote: >> I guess my email address might surprise some of you, so let me anticipate some >> questions you might have. :P Yes, this work is endorsed by NVIDIA. Several other >> NVIDIAns (CC'd), including core GPU experts,

Hello, I'm Shivang Bansal, a 3rd year Computer Science Engineering undergraduate at Institute of Engineering & Technology in Lucknow, India. This mail is an expression of my interest for Google Summer of Code program of this year. I want to apologize for getting in so late. Actually I would have contacted earlier, but sudden demise of my Grandfather disabled me in doing so. I am

Dear xapian developers, I've added a function named "set_sort_by_relevance_then_value()". Now I want to rebuild python-bindings to include the new function and test if it works or not. I guess there is a way to rebuild all of the binding modules include the new function. I am not used to SWIG. I want to which files I need to change and how to build it. Thanks! Sungsoo Kim

The following 2 patches make it possible to run Mesa programs on GK20A (Tegra K1). GK20A is very similar to GK104, but uses a new (backward-compatible) 3D class as well as the same ISA as GK110 (SM35). Taking these differences into account is sufficient to successfully render simple off-screen buffers. Alexandre Courbot (2): nvc0: add GK20A 3D class nvc0: use SM35 ISA with GK20A

Hello guys. I am currently working on the DLH weighting scheme .The formula for DLH is very complex and it ends up giving negative weights to some documents because of the formula.Due to this,inspite of having occurence/occurences of the keyword, the documents with negative weights don't show up in the results at all. Please can I get some help on how to deal with this ? Or should I just leave

Hi all, I found that the figure returned by MSet::get_matches_estimated() varies depending on how results are to be sorted. For instance, in my index, value 4 contains date and time in the format "yyyymmddhhmmss". For the same query, the number of results will be estimated to 20000+ when results are first sorted by date and time with set_sort_by_value_then_relevance(4) and to only 100

Olly Betts <olly at survex.com> wrote: > On Fri, Aug 21, 2020 at 09:06:59AM +0000, Eric Wong wrote: > > Going back to the "prioritizing aggregated DBs" thread from > > February 2020, I've got 390 Xapian shards for 130 public inboxes > > I want to search against(*). There's more on the horizon (we're > > expecting tens of thousands of public

Hi, I'm using xapian with c# and mono and i'm having a segfault in get_weight. When i print the index variable, the value is clearly too high. I think something write over it. Do you have any idea on how i could trace the beginning of the segmentation fault ? Thanks, -- Yann

Posting recent offline discussion... On Fri, Apr 27, 2012 at 10:55 AM, Marius Tibeica <mtibeica at gmail.com> wrote: > Hi Liam, > > I've added the Enquire class and designed a query spec structured as a JS > object. Hope you like it :) > I'll probably be off a few days (there is a national holiday Tuesday which > means i have a long weekend :D) but maybe I'll

Hello everyone, GK20A is the Kepler-based GPU used in the upcoming Tegra K1 chips. The following patches perform architectural changes to Nouveau that are necessary to support non-PCI GPUs and add initial support for GK20A. Although the support is still very basic and more user-space changes will be needed to make the full graphics stack run on top of it, we were able to successfully open