11-30-2009, 07:57 AM
Well, now I am working on the redesign of the Runedex system. And for the most part it will be plugged into the new GEC 2.0 templates, so it will have a uniform look and feed to the home page. I decided to do the Runedexes next as the individual item pages are going to be fairly complex and I am holding off a little to plug them into the templates.
Anyway, with the redesign Runedexes you will also notice that the Runedex values will have changed. You may have already noticed this with the Full Eco Runedex listed in the sidebar of the home page. I have decided to go for an indexing style that more closely matches real world stock indexes.
So for those of you interested in the math and my logic, here is a technical review of how the GEC Runedexes are calculated. I hope that this method will be able to provide visitors with logical and at-a-glance performance information about each Runedex we provide.
So the first thing we need is the total value of the runedex itself. For this post I'll use the Cape Runedex which is valued right now at 4,558,039 gp. The average value of each item in the Runedex turns out to be 60,773. Now those are some widly large numbers. So I wanted to bring things down to something a little more manageable. Like the 1000s. But before we do that I needed something to compare todays numbers with. So I find out the weekly average value of the runedex from 90 days ago and from that find out the average value of each item in the Runedex. In our case that is 42,171. From that I find out the number that magically turns that average into 1000. This divisior is 0.02371. Now I go back to todays average item value, remember 60,773. Using the divisor from the weekly average 90 days ago we get a more manageable 1440. Which means the Cape Index has increased in value by 440 points since 90 days ago.
I'm sure that all sounds haphazard. And in truth I think it is kind of wonky. First of all, it causes the index to be weighted (or effected more by changes in high value items). But for now I think it is the best simplication of Runedex values. I have thought about ways to do an unweighted Runedex for over a year and I have yet to come up with something that feels right. Until then, we'll go with this system. Also don't fear for those of you who like the current system. You will still be able to see the average item change for the Runedex, which gives an unweighted view of the Runedex performance.
Anyway, with the redesign Runedexes you will also notice that the Runedex values will have changed. You may have already noticed this with the Full Eco Runedex listed in the sidebar of the home page. I have decided to go for an indexing style that more closely matches real world stock indexes.
So for those of you interested in the math and my logic, here is a technical review of how the GEC Runedexes are calculated. I hope that this method will be able to provide visitors with logical and at-a-glance performance information about each Runedex we provide.
So the first thing we need is the total value of the runedex itself. For this post I'll use the Cape Runedex which is valued right now at 4,558,039 gp. The average value of each item in the Runedex turns out to be 60,773. Now those are some widly large numbers. So I wanted to bring things down to something a little more manageable. Like the 1000s. But before we do that I needed something to compare todays numbers with. So I find out the weekly average value of the runedex from 90 days ago and from that find out the average value of each item in the Runedex. In our case that is 42,171. From that I find out the number that magically turns that average into 1000. This divisior is 0.02371. Now I go back to todays average item value, remember 60,773. Using the divisor from the weekly average 90 days ago we get a more manageable 1440. Which means the Cape Index has increased in value by 440 points since 90 days ago.
I'm sure that all sounds haphazard. And in truth I think it is kind of wonky. First of all, it causes the index to be weighted (or effected more by changes in high value items). But for now I think it is the best simplication of Runedex values. I have thought about ways to do an unweighted Runedex for over a year and I have yet to come up with something that feels right. Until then, we'll go with this system. Also don't fear for those of you who like the current system. You will still be able to see the average item change for the Runedex, which gives an unweighted view of the Runedex performance.