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Search Results Question #198792
10/07/07 11:27 PM
10/07/07 11:27 PM
Mitch P.  Offline
OP
old hand
Joined: Jun 2006
Posts: 885
If I do a search going back one year, across all forums on my board with this string (including quotes) I get a hit:
"I've never heard of that"

However, if I do a search with this string, I get no hit:
"I've never"

Anyone know why? Thanks.

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Re: Search Results Question [Re: Mitch P.] #198795
10/08/07 12:20 AM
10/08/07 12:20 AM
SD  Offline
Former Developer
Joined: Apr 2007
Posts: 4,313
SoCal, USA
yes, Mysql's Full Text index (FTI) will throw away the more common words as it builds the index over time. I believe there's a 50% limit that it imposes by default.

In other words, FTI tends to only save the less common words in the index over time.

Evidently 'Never' and "I've" are too common and that is why you are forced to add more specifics to get hits.

This is off the top of my head and i can look into it deeper, but i think that it boils down to a word ranking algorithm that is in place.

2c

Re: Search Results Question [Re: SD] #198798
10/08/07 01:32 AM
10/08/07 01:32 AM
ntdoc  Offline
Carpal Tunnel
Joined: Nov 2006
Posts: 3,390
There are also common words that it won't search for either.

I've posted a list here but don't feel like searching for it right now, but that too could be the issue.

Re: Search Results Question [Re: ntdoc] #198802
10/08/07 02:02 AM
10/08/07 02:02 AM
Gizmo  Offline
UBB.threads Developer
Joined: Jun 2006
Posts: 16,983
Portland, OR; USA


I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums. Need to Upgrade?
Forums: A Gardeners Forum Scouters World
UBB.threads: UBBWiki, UBB Styles, UBB.Sitemaps
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Re: Search Results Question [Re: Gizmo] #198804
10/08/07 03:06 AM
10/08/07 03:06 AM
ntdoc  Offline
Carpal Tunnel
Joined: Nov 2006
Posts: 3,390

Re: Search Results Question [Re: ntdoc] #198808
10/08/07 03:50 AM
10/08/07 03:50 AM
Gizmo  Offline
UBB.threads Developer
Joined: Jun 2006
Posts: 16,983
Portland, OR; USA
np; I generally referance the manual when I get bored and run into a stump wink hehe


I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums. Need to Upgrade?
Forums: A Gardeners Forum Scouters World
UBB.threads: UBBWiki, UBB Styles, UBB.Sitemaps
Longtime Supporter & Resident Post-A-Holic
VNC Web Services: Code Modifications, Upgrades, Styling, Coding Services, Disaster Recovery, and more!
Re: Search Results Question [Re: Gizmo] #198818
10/08/07 10:55 AM
10/08/07 10:55 AM
R
Rick  Offline
Former Developer
Joined: Jun 2006
Posts: 10,177
Aberdeen, WA
I'm hoping to get the time to put in the option to use the old search engine in 7.3. Basically where it uses "LIKE" instead of fulltext searches. It still performs well on a moderate sized board and is much more flexible that fulltext searching.

Re: Search Results Question [Re: Rick] #198858
10/08/07 07:43 PM
10/08/07 07:43 PM
Mitch P.  Offline
OP
old hand
Joined: Jun 2006
Posts: 885
Thanks for the explanation.


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