[NEW] Best Continuation algorithm has been changed

The place to get information and ask questions about everything to do with properly and successfully editing the Waze Map.

Use this forum for all general editing questions, and the sub-forums for specific types of Waze Map Editor features.

Moderators: Unholy, bextein

Re: [NEW] Best Continuation algorithm has been changed

Postby PesachZ » Sun Sep 21, 2014 8:59 am

Further tests confirm;

When all segments have the same primary name, an alt match on one side does not make it BC, but a type match on one side does make it BC. This works even when one side has the alt match, and the other has the type match, type match becomes BC.

This leads us to believe the old rules are still in effect unless the new rules override them.

The new rules can override when any of the following are present:
  • A type + alt match
  • alt name cross match
  • No primary name match, but yes alt match
PesachZ
Wiki Master
Wiki Master
 
Posts: 4507
Joined: Mon Jul 01, 2013 12:51 am
Location: NY, USA (also NJ sometimes) {GC}
Has thanked: 1997 times
Been thanked: 2353 times

Re: [NEW] Best Continuation algorithm has been changed

Postby Fredo-p » Sun Sep 21, 2014 10:01 pm

If the algorithm has been changed, instead of doing all of this investigative work just to confirm it, couldn't a Global Champ contact the devs to confirm if the change has been made and find out what the changes were?

Is the communication between the Devs and the GC "liaisons" always that "in the dark"? I know asking to include change logs is not going to happen anytime soon, but it would be nice if the devs would at least pick one GC to notify them of what changes have been made in a certain code and what the changes are so they could advise us of what to expect.
Fredo-p
Beta tester
Beta tester
 
Posts: 1998
Joined: Mon Aug 05, 2013 4:35 am
Location: AZ, NJ, NY, ND, CA
Has thanked: 269 times
Been thanked: 640 times

Re: [NEW] Best Continuation algorithm has been changed

Postby dckj » Mon Sep 22, 2014 5:21 am

hmm... the problem in my area seems to be gone now since we removed the Alt Names from all the WF segments.
State Manager - Selangor | WP Kuala Lumpur | WP Putrajaya

Click here to join our Waze Malaysia community!
dckj
Beta tester
Beta tester
 
Posts: 38
Joined: Sun Nov 10, 2013 9:01 am
Has thanked: 10 times
Been thanked: 17 times

Re: [NEW] Best Continuation algorithm has been changed

Postby sketch » Mon Sep 22, 2014 6:40 pm

Fredo-p wrote:If the algorithm has been changed, instead of doing all of this investigative work just to confirm it, couldn't a Global Champ contact the devs to confirm if the change has been made and find out what the changes were?

Is the communication between the Devs and the GC "liaisons" always that "in the dark"? I know asking to include change logs is not going to happen anytime soon, but it would be nice if the devs would at least pick one GC to notify them of what changes have been made in a certain code and what the changes are so they could advise us of what to expect.

You would think.

You would hope.
ALL US EDITORS READ: New USA road type guidance
assistant regional coordinator • south central region • usa
waze global champ • beta leader • tier one • new orleans
2017 chevrolet ss sedan 6mt • slipstream blue metallic
[ img ] [ img ]
sketch
Waze Global Champs
Waze Global Champs
 
Posts: 6422
Joined: Sat Aug 08, 2009 6:13 pm
Location: Nouvelle-Orléans, Louisiane, États-Unis
Has thanked: 2012 times
Been thanked: 2516 times

Re: [NEW] Best Continuation algorithm has been changed

Postby Fredo-p » Mon Sep 22, 2014 10:38 pm

sketch wrote:
Fredo-p wrote:If the algorithm has been changed, instead of doing all of this investigative work just to confirm it, couldn't a Global Champ contact the devs to confirm if the change has been made and find out what the changes were?

Is the communication between the Devs and the GC "liaisons" always that "in the dark"? I know asking to include change logs is not going to happen anytime soon, but it would be nice if the devs would at least pick one GC to notify them of what changes have been made in a certain code and what the changes are so they could advise us of what to expect.

You would think.

You would hope.


That's not promising :?. Well, here's to thinking and hoping.
Fredo-p
Beta tester
Beta tester
 
Posts: 1998
Joined: Mon Aug 05, 2013 4:35 am
Location: AZ, NJ, NY, ND, CA
Has thanked: 269 times
Been thanked: 640 times

Re: [NEW] Best Continuation algorithm has been changed

Postby PesachZ » Tue Sep 23, 2014 7:34 pm

I believe testing is complete, the summary findings are:

The old algorithm is still in place with a few modifications (in bold) . The order of preference for BC is;
  • Primary name + Type match
  • Alt name + Type match
  • Primary name match, OR Primary name <> Alt name Cross-match
  • Alt name match
  • Type match

City names have no affect on matches.

A Cross-match is when the primary name of one segment is identical to the alternate name of an adjacent segment. It had the same priory as a Primary name match.
In order for a Cross match to work there must be at least one alt name on both involved segments (even though they don't necessarily match each other).
It will work even if the are no Primary names on those segments.
It will not work if all three segments at a split have a matching Primary name or a matching Alternate name.

An Alt match is when two adjacent segments have an identical alternate name (regardless of city name).
It will not work if all three segments at a split have a matching Primary name.
It will work even the OUT segment (the one leaving the split) has no Primary name.


Sent using Tapatalk for Android 4.4.2
PesachZ
Wiki Master
Wiki Master
 
Posts: 4507
Joined: Mon Jul 01, 2013 12:51 am
Location: NY, USA (also NJ sometimes) {GC}
Has thanked: 1997 times
Been thanked: 2353 times

Re: [NEW] Best Continuation algorithm has been changed

Postby taco909 » Tue Sep 23, 2014 8:11 pm

Therefore, for a frontage road with the same name as the MH/mH, properly configured as "Street" or "Primary", the MH/mH type would produce the match and one would only receive "Stay to the right" if the route required use of the frontage road and there would be no "Stay to the left" instruction.

IE: Main St Minor Highway, with Main St Primary at a 30 degree junction then parallel for 2 miles before rejoining.


Hypothetical: Main St Major Highway. Reaches a 5-points junction with First and Division.
First is a 40 degree right off of Main. Division is straight through. Main continues as a MH 40 degrees to the left (inverted peace sign). First and Division are both Primary.

Both the name and type match would dictate that BC is to the left, but:
First would be "Stay to the right"
What would be the instruction for Division?
Wayfinder to force "Stay to the left to Main"... but with the type matching, we would still need a stub downgraded to minor, or if there is no name match is the type match ignored?
-- Rich
taco909
Map Editor - Level 4
Map Editor - Level 4
 
Posts: 2230
Joined: Sun Jun 01, 2014 4:05 am
Location: Los Angeles Area
Has thanked: 716 times
Been thanked: 645 times

Re: [NEW] Best Continuation algorithm has been changed

Postby PesachZ » Tue Sep 23, 2014 8:17 pm

Taco909 wrote:Therefore, for a frontage road with the same name as the MH/mH, properly configured as "Street" or "Primary", the MH/mH type would produce the match and one would only receive "Stay to the right" if the route required use of the frontage road and there would be no "Stay to the left" instruction.

IE: Main St Minor Highway, with Main St Primary at a 30 degree junction then parallel for 2 miles before rejoining.


Hypothetical: Main St Major Highway. Reaches a 5-points junction with First and Division.
First is a 40 degree right off of Main. Division is straight through. Main continues as a MH 40 degrees to the left (inverted peace sign). First and Division are both Primary.

Both the name and type match would dictate that BC is to the left, but:
First would be "Stay to the right"
What would be the instruction for Division?
Wayfinder to force "Stay to the left to Main"... but with the type matching, we would still need a stub downgraded to minor, or if there is no name match is the type match ignored?

Are there any alt names involved here?


EDIT: Assuming they're are no alt names involved, and you didn't mention any, you can use the interactive algorithm on the wiki to determine these instructions.

In your first example with a frontage road, if I'm understanding correctly, will end up with a split that is;
IN: mH Main St
OUT 15°right: mH Main St
OUT 15°left: PS/Street Main St
In this setup continuing on the mH to the left will give no instruction, taking the frontage will give an "exit right" instruction. If you want to force an instruction to both sides you will need a 5 meter mH wayfinder stub as the beginning of the frontage road, so both sides become an equal name+type match, and will then both get an instruction.

Your second example is more problematic as it is a 3-way split, which should always try to be avoided. One problem with a 3-way split is that the middle road gets a keep right instruction if it gets an instruction.

Sent using Tapatalk for Android 4.4.2
PesachZ
Wiki Master
Wiki Master
 
Posts: 4507
Joined: Mon Jul 01, 2013 12:51 am
Location: NY, USA (also NJ sometimes) {GC}
Has thanked: 1997 times
Been thanked: 2353 times

Re: [NEW] Best Continuation algorithm has been changed

Postby bz2012 » Wed Sep 24, 2014 12:34 am

Is this a victim of the change?

https://www.waze.com/editor/?zoom=5&lat ... 24&zoom=0#
Problem: there is a split here. need keep right / keep left instruction
Reported on: September 10


I have no idea if it was working before, but hope/assume it was as last change were in late July.

s-in US-59 HOV, Houston, Texas; mH
s-out 1 US-59 HOV, Houston, Texas; mH 164 deg
s-out 2 <no name> ; ramp 187 deg
no alt names involved.

Suggestions for fixing?
State Manager, Louisiana
bz2012
Map Raider
Map Raider
 
Posts: 1593
Joined: Wed Nov 23, 2011 4:32 pm
Location: Baton Rouge, La
Has thanked: 1904 times
Been thanked: 310 times

Re: [NEW] Best Continuation algorithm has been changed

Postby PesachZ » Wed Sep 24, 2014 12:44 am

bz2012 wrote:Is this a victim of the change?

https://www.waze.com/editor/?zoom=5&lat ... 24&zoom=0#
Problem: there is a split here. need keep right / keep left instruction
Reported on: September 10


I have no idea if it was working before, but hope/assume it was as last change were in late July.

s-in US-59 HOV, Houston, Texas; mH
s-out 1 US-59 HOV, Houston, Texas; mH 164 deg
s-out 2 <no name> ; ramp 187 deg
no alt names involved.

Suggestions for fixing?


If there are no alt names involved, it is not a victim of the new algorithm.

I assume you meant the turn angles are
S-out 1 16° left
S-out 2 7° right
If this is correct then it never worked and likely only instructed to "exit right to..." for s-out 2.

To fix this make the first 5 meters of s-out 1a no-name as well, type: ramp.

Sent using Tapatalk for Android 4.4.2
PesachZ
Wiki Master
Wiki Master
 
Posts: 4507
Joined: Mon Jul 01, 2013 12:51 am
Location: NY, USA (also NJ sometimes) {GC}
Has thanked: 1997 times
Been thanked: 2353 times

PreviousNext

Return to Waze Map Editor

Who is online

Users browsing this forum: Google [Bot]