the Power of Search

Stuff about the website, the forum and club administration.

Moderator: Ian

User avatar
mikeonb4c
Supreme Being
Posts: 21707
Joined: Sun Nov 05, 2006 10:49 pm
Location: Living with Mango Bongo in the North West but with a tendency to roam
Contact:

Re: the Power of Search

Post by mikeonb4c » Wed Jul 22, 2015 3:08 pm

sotal wrote:
TheStinkyHippy wrote:Excellent tip. I often struggle on searches,
e.g. if you search for engine AND oil
many results don't have oil in the thread at all.. never understood why
The forum search ignores words that are 3 characters or less.

If you search for oil on it's own then you get no results.

If you search for oil leak even with all terms selected it will ignore oil and just search for leak

If you search for oil AND leak again it will ignore oil.

The only way I have found is to search for "oil leak" but then it needs to find the phrase.

Would be handy if there is a forum setting which could allow 3 letter searches. There are quite a lot of 3 letter words related to cars which you just can't search for:

oil
car
air
fan
ecu

etc
I agree. This characteristic of the BF Search engine has irritated me more than once :evil:
I Bongo, therefore I am...
Bongoing, BonGoing, BonGone
User avatar
g8dhe
Supreme Being
Posts: 7011
Joined: Sun Apr 13, 2008 10:06 pm
Location: Worthing, West Sussex.
Contact:

Re: the Power of Search

Post by g8dhe » Wed Jul 22, 2015 3:21 pm

Both the minimum and the maximum character count can be changed, however, the index has to then be re-created .....
this can take a long time...
a board with 350 posts took 30seconds this board currently has 270131 so about 6 hours as a minimum I suspect, possibly 12-18 hours more likely!
Geoff
97 V6, AFT, full side conversion.
Image Spherical Visions
User avatar
mikeonb4c
Supreme Being
Posts: 21707
Joined: Sun Nov 05, 2006 10:49 pm
Location: Living with Mango Bongo in the North West but with a tendency to roam
Contact:

Re: the Power of Search

Post by mikeonb4c » Wed Jul 22, 2015 3:27 pm

g8dhe wrote:Both the minimum and the maximum character count can be changed, however, the index has to then be re-created .....
this can take a long time...
a board with 350 posts took 30seconds this board currently has 270131 so about 6 hours as a minimum I suspect, possibly 12-18 hours more likely!
Jeebers what technology are we using! Useful facts and figures mind you!
I Bongo, therefore I am...
Bongoing, BonGoing, BonGone
User avatar
g8dhe
Supreme Being
Posts: 7011
Joined: Sun Apr 13, 2008 10:06 pm
Location: Worthing, West Sussex.
Contact:

Re: the Power of Search

Post by g8dhe » Wed Jul 22, 2015 3:34 pm

Re-indexing databases is not done lightly on any technology when the database is of any size!
Geoff
97 V6, AFT, full side conversion.
Image Spherical Visions
Snail921
Bongonaut
Posts: 65
Joined: Tue May 06, 2014 7:47 pm
Location: Whitehaven

Re: the Power of Search

Post by Snail921 » Wed Jul 22, 2015 3:46 pm

oil+leak (rather than oil and leak) works
Regards,
Brian.
User avatar
g8dhe
Supreme Being
Posts: 7011
Joined: Sun Apr 13, 2008 10:06 pm
Location: Worthing, West Sussex.
Contact:

Re: the Power of Search

Post by g8dhe » Wed Jul 22, 2015 3:50 pm

Now count the items (or pages of items) and repeat with just "leak" count again ....
Geoff
97 V6, AFT, full side conversion.
Image Spherical Visions
User avatar
mikeonb4c
Supreme Being
Posts: 21707
Joined: Sun Nov 05, 2006 10:49 pm
Location: Living with Mango Bongo in the North West but with a tendency to roam
Contact:

Re: the Power of Search

Post by mikeonb4c » Wed Jul 22, 2015 3:57 pm

g8dhe wrote:Re-indexing databases is not done lightly on any technology when the database is of any size!
Takes me back to the old days when I designed database apps and was always looking for the best b-tree indexing engine. But of course search engines of the sort used on here must I guess be doing clever indexing of all words and their location in posts, which is a HUGELY more demanding exercise than the simple A-Z 0-999999 etc indexing of date fields like wot I wuz doing.
I Bongo, therefore I am...
Bongoing, BonGoing, BonGone
Snail921
Bongonaut
Posts: 65
Joined: Tue May 06, 2014 7:47 pm
Location: Whitehaven

Re: the Power of Search

Post by Snail921 » Thu Jul 23, 2015 10:30 am

My point was, Geoff, that it recognized oil despite the three character limit
Regards,
Brian.
User avatar
g8dhe
Supreme Being
Posts: 7011
Joined: Sun Apr 13, 2008 10:06 pm
Location: Worthing, West Sussex.
Contact:

Re: the Power of Search

Post by g8dhe » Thu Jul 23, 2015 10:58 am

Well not quite, what it does is search for "filter" but highlights both "oil" and "filter" so it will miss messages with just "oil" in them, but any that happen to have "oil" will be highlighted - hope that makes sense!
Geoff
97 V6, AFT, full side conversion.
Image Spherical Visions
User avatar
mikeonb4c
Supreme Being
Posts: 21707
Joined: Sun Nov 05, 2006 10:49 pm
Location: Living with Mango Bongo in the North West but with a tendency to roam
Contact:

Re: the Power of Search

Post by mikeonb4c » Thu Jul 23, 2015 1:57 pm

g8dhe wrote:Well not quite, what it does is search for "filter" but highlights both "oil" and "filter" so it will miss messages with just "oil" in them, but any that happen to have "oil" will be highlighted - hope that makes sense!
for 'filter' read 'leak'?
I Bongo, therefore I am...
Bongoing, BonGoing, BonGone
User avatar
g8dhe
Supreme Being
Posts: 7011
Joined: Sun Apr 13, 2008 10:06 pm
Location: Worthing, West Sussex.
Contact:

Re: the Power of Search

Post by g8dhe » Thu Jul 23, 2015 2:38 pm

Yes!
Geoff
97 V6, AFT, full side conversion.
Image Spherical Visions
Post Reply