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Any math wizards here? Redoing UHH contests.
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Apr 20, 2012 15:59:20   #
Admin
 
Quote:
Why won't tha avg. system work. 1 vote per person. The one pic get 10 votes at four stars and the one gets 1 vote of five stars. The avg is based on total votes period. Meaning by 11 total votes in your example. So the first gets 3.6 avg. the five star with one vote has a .45 avg.


So if there is one pic with 10 votes of 4 points each and another pic with 6 votes of 5 points each we would get:

1) (4x10)/16=2.5
2) (5x6)/16=1.875

Pic #1 would win. But it's obvious that the pic #2 is the better one. It just happened to get rated by fewer people.

Besides, please check my post about voter to pic ratio. That's the main problem to be addressed.

Quote:
1a + 2b + 3c + 4d + 5e = total score, where the letters “a through e” are the number of people who voted for a photo at that level of scoring.


This is interesting. Do you know if there is a tested theory behind this method that could be read/looked at somewhere?

Reply
Apr 20, 2012 16:04:50   #
alienmurphy Loc: Alaska
 
Admin wrote:
Quote:
Why won't tha avg. system work. 1 vote per person. The one pic get 10 votes at four stars and the one gets 1 vote of five stars. The avg is based on total votes period. Meaning by 11 total votes in your example. So the first gets 3.6 avg. the five star with one vote has a .45 avg.


So if there is one pic with 10 votes of 4 points each and another pic with 6 votes of 5 points each we would get:

1) (4x10)/16=2.5
2) (5x6)/16=1.875

Pic #1 would win. But it's obvious that the pic #2 is the better one. It just happened to get rated by fewer people.

Besides, please check my post about voter to pic ratio. That's the main problem to be addressed.

Quote:
1a + 2b + 3c + 4d + 5e = total score, where the letters “a through e” are the number of people who voted for a photo at that level of scoring.


This is interesting. Do you know if there is a tested theory behind this method that could be read/looked at somewhere?
quote Why won't tha avg. system work. 1 vote per ... (show quote)

At the end of a contest with any of the suggested scenarios who's going to do the math or pay for programming to do this in the background on the website?

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Apr 20, 2012 16:42:41   #
rob s Loc: La Mesa, CA
 
Of course everyone could get five votes but assign these as places 1 - 5.
Just another way to refine which pictures are ranked highest.

Reply
 
 
Apr 20, 2012 17:24:34   #
Ragarm
 
Admin wrote:
I'm thinking another option is to dilute the voting power of a user based on how many votes he/she placed.

For example:

For any given contest a user has one point to share.

So if he/she only places one vote for some picture, that picture gets a score bump by one point.

If later on, that same user votes for another picture, the point is split. At this time, two pictures would get 0.5 point each from this user.

If he/she votes for 10 different pictures in the contest, each of the pictures would get 0.10 points from this user.

And the winner would be decided by the raw sum of all points from all users' votes.

So if you really like one picture, only vote for this picture and nothing else. But if like multiple pictures, you can vote for as many as you like provided your voting power gets split among them.

Users would also have an option of revoking a vote. So if you vote for some pictures and later on decide to concentrate your voting "juice" on fewer pictures you like the most, then you'll be able to revoke your earlier votes for the pictures you liked least of all.

What do you think?
I'm thinking another option is to dilute the votin... (show quote)


If you do this, nix the revoking option. From an economic theory standpoint, the justification for you splitting the votes is sound. We each have a limited resource, our vote of 1, or 5, or 117, or whatever as longe as we all get the same amount of resources. Now, we each decide how to distribute our resources.

Why nix the revoke option? Because as has been noted, early high vote getters tend to draw even more votes based on their early lead. That's a dynamic bias that is propagated by the revoke option.

Reply
Apr 20, 2012 17:28:22   #
Ragarm
 
birdpix wrote:
Joyfullee wrote:
I think the contest should be that entries are received for x number of days and/or set limited number of entries, whichever comes first.

No voting until all entries have been received.

Each person gets to place a vote for 5 photos. (There are excellent photos and sometimes it's very hard to choose just one from the many entries.) The tally of votes is not to be shown to the voters. Voting should have a time limit, such as votes will be received for 3 days after the contest (submissions have been received) has ended.

After the 3 days of voting, post the top five winners and then allow 1 vote per person for one of the top five.

This voting will announce the winner of the contest.

My thoughts.
I think the contest should be that entries are rec... (show quote)


This sounds like a reasonable compromise.
quote=Joyfullee I think the contest should be tha... (show quote)


This is fair. I like the time limit on submissions and the limited number of votes over a fairly short period of time.

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Apr 20, 2012 17:48:57   #
Nikon13 Loc: North Carolina
 
I have an idea and if it has already been suggested....my apologies. Why don't we ditch the voting and go with judges selected from the UHH ranks. A professional, an amateur and a newbie. Members could volunteer to be contest judges and be randomly selected with each contest to participate. Voting is messy....ask anyone from Florida.

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Apr 20, 2012 18:05:19   #
Linden
 
It wont be fair no matter how many points you assign...... because people don't use the same criteria to judge. People will vote for the one they like, not necessarily the one with best technical merits or drama displayed. If it were judged with rules then points split for each criteria would make sense.

So one point, or the ability to pick a first, and second place. This way, those who automatically vote for their own will also be placing a vote for someone else!

You could make it even more fair by with holding the vote count until the end.

And I still think a wall of shame to permanently display all the contest winners would be good!

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Apr 20, 2012 18:20:40   #
Wahawk Loc: NE IA
 
Admin wrote:
I'm thinking about changing the way the contest system works.

Instead of allowing only one vote per user, I would like to allow unlimited votes with a 5-point system.

Any user would be able grade as many pictures as he/she wants and assign a value from 1 to 5 points/stars/etc. to any picture.

Now the question is how to determine the winner?

Going by the average score won't work. For example, one picture might get 10 votes of 4 points, and have the average score of 4. While another picture might get one vote of 5 points and get the average score of 5. Obviously, the latter isn't necessarily a better picture.

Going by the product won't work either. One picture might get three votes of 4 points for a 12-point product. While another one might get two votes of 5 points for a 10-point product. The former picture would win with such scoring system, while it would be apparent that the latter picture is the better one.

Any suggestions?
I'm thinking about changing the way the contest sy... (show quote)


I like the idea of unlimited votes, on a scale of 1-5. But then somehow factor in the number of views so that pics with more views get slightly higher results than pics with only a few views. If a pic gets 10,000 views and an average vote of 3, it is probably still better than a pic with only 100 views and an avg vote of 4.

Reply
Apr 20, 2012 19:18:55   #
JimMullinaux Loc: Austin, Texas
 
I seriously doubt most folks will take time to look at all 200 entries in a contest. They probably will look at the first ten or twenty, cast their vote(s), and skip the remaining 180 pictures. It then becomes a contest based on how quickly you can enter your picture.

Not only should contests be easy to enter, they also should be easy to judge (especially if you're going by popular vote). With a two-tier system, a panel would select ten or twenty finalists, and only those ten or twenty would be put up for member voting. More than likely, most people would be willing to look through ten or twenty pictures before casting their vote(s).

The main point is to keep our focus on the pictures -- and not how quickly they were entered. It's also important to get as many members as possible to look at the pictures and to cast their votes. They won't look through 200 pictures, but they might look at ten or twenty.

I think the main concern against a two-tier system is having to trust a panel. This could be softened somewhat by having panelists selected from volunteer members and by having the panelists' names remain anonymous. Also, different panelists would be selected for different contests.

Again, all this is aimed at making it easy for the general membership to vote. Also, asking members to serve as panelists helps to get them more involved with the UHH family.

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Apr 20, 2012 21:01:51   #
Ragarm
 
Nikon13 wrote:
I have an idea and if it has already been suggested....my apologies. Why don't we ditch the voting and go with judges selected from the UHH ranks. A professional, an amateur and a newbie. Members could volunteer to be contest judges and be randomly selected with each contest to participate. Voting is messy....ask anyone from Florida.


I like the idea of a newbie. The different combination of judges could generate lots of interest, in and of itself. Another benefit would be the different views, criteria, and biases brought to each contest. The more I think about this, the more I like this idea.

Reply
Apr 20, 2012 21:03:48   #
russelray Loc: La Mesa CA
 
Admin wrote:
I'm thinking about changing the way the contest system works.

Instead of allowing only one vote per user, I would like to allow unlimited votes with a 5-point system.

Any user would be able grade as many pictures as he/she wants and assign a value from 1 to 5 points/stars/etc. to any picture.

Now the question is how to determine the winner?

Going by the average score won't work. For example, one picture might get 10 votes of 4 points, and have the average score of 4. While another picture might get one vote of 5 points and get the average score of 5. Obviously, the latter isn't necessarily a better picture.

Going by the product won't work either. One picture might get three votes of 4 points for a 12-point product. While another one might get two votes of 5 points for a 10-point product. The former picture would win with such scoring system, while it would be apparent that the latter picture is the better one.

Any suggestions?
I'm thinking about changing the way the contest sy... (show quote)

Why do you think that the picture that got two votes of 5 points is better than the one that got three votes of 4 points.

I think that if one picture gets 10 votes but each vote is only one point is a winner over one picture that gets one vote for five points. More people voting for the people in any form means more people like the picture.

You could always use a similar point system as the college football bowls, but we all know where that leaves us. lol

Reply
 
 
Apr 20, 2012 21:16:32   #
Dback4430 Loc: Lockport Il
 
Admin wrote:
Quote:
Why won't tha avg. system work. 1 vote per person. The one pic get 10 votes at four stars and the one gets 1 vote of five stars. The avg is based on total votes period. Meaning by 11 total votes in your example. So the first gets 3.6 avg. the five star with one vote has a .45 avg.


So if there is one pic with 10 votes of 4 points each and another pic with 6 votes of 5 points each we would get:

1) (4x10)/16=2.5
2) (5x6)/16=1.875

Pic #1 would win. But it's obvious that the pic #2 is the better one. It just happened to get rated by fewer people.

Besides, please check my post about voter to pic ratio. That's the main problem to be addressed.

Quote:
1a + 2b + 3c + 4d + 5e = total score, where the letters “a through e” are the number of people who voted for a photo at that level of scoring.


This is interesting. Do you know if there is a tested theory behind this method that could be read/looked at somewhere?
quote Why won't tha avg. system work. 1 vote per ... (show quote)

I don't know at all about the theory . IT was the first thing that jumped into my mind .
To simplify this , use the General public to narrow it down to say 3 or 5 photos . Then repost them and the games begin lol. I was trying to help . I really don't think that there are going to be many people to lok at all the pics till there is a way to just do the pictures as thumbnail size @ 100 per page , then they may investigate further . Just a guess , butt ....

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Apr 20, 2012 21:27:22   #
artfuldiver Loc: Clearwater, Florida
 
I agree with f22 just don't show the vpotes till the end and don't change the order in which they are displayed

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Apr 20, 2012 22:14:36   #
TomJ Loc: Kansas
 
A modified version of Joyfullee's suggestion is to allow 3 votes with numeric values 5, 3 and 1. Winner is photo with highest sum after all votes are counted. Using weights greater than 1 should create greater dispersion of total votes.

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Apr 20, 2012 22:22:46   #
texaseve Loc: TX, NC and NH
 
I like the idea of not voting until all entries are in and not showing scores until the end. How much they are scored or how many votes we get is not important to me. I have belonged to another site where the same people always get all the votes because of who they are and how long they have been there so after a long time, I left.

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