Reply to thread

Message

<blockquote data-quote="Psionicist" data-source="post: 29644" data-attributes="member: 1874">The final equation will then beV x (T / V - 1) ^ 2 Using the standard and KDLagade equationsV = Number of votesT = Total pool of ranksTo describe how it works1) First of all, unless Liquide used some weird method when creating the reviews system, every products have 2 fields in the database, &quot;total number of votes&quot;, and the &quot;total value of all votes&quot;. Lets say I vote a 5 on Manual of the Planes, then the system adds 1 to total &quot;total number of votes&quot;, and 5 to the &quot;total value of all votes&quot;.So, after a while, a product may have 12 votes and a total value of 48. If 12 people have voted the &quot;total number of votes&quot; will ALWAYS be 12, while the &quot;total value of votes&quot; will wary from 12 (if all voted 1) and 60 (if all voted 5).Now we have two values. If we divide the total value of all votes with the total number of votes, we have the average rank of the product (eg 48/12 = 4)2) Now, when we know the average, lets do as KDLadage described: &quot;In other words, multiply the number of votes that the product has received by the square of the average vote minus 1. &quot;This means, simply put, that a product with a whole lots of reviews may be equally worth as a product with a few but high ranks.As an example, look at this. We have book 1 where 4 people voted 5, and we have book 2 where 20 people voted 4.book 1: 4 x (5-1) ^ 2 = 64???ehh...KD.. Have I missed something here?</blockquote>

[QUOTE="Psionicist, post: 29644, member: 1874"] The final equation will then be V x (T / V - 1) ^ 2 Using the standard and KDLagade equations V = Number of votes T = Total pool of ranks To describe how it works 1) First of all, unless Liquide used some weird method when creating the reviews system, every products have 2 fields in the database, "total number of votes", and the "total value of all votes". Lets say I vote a 5 on Manual of the Planes, then the system adds 1 to total "total number of votes", and 5 to the "total value of all votes". So, after a while, a product may have 12 votes and a total value of 48. If 12 people have voted the "total number of votes" will ALWAYS be 12, while the "total value of votes" will wary from 12 (if all voted 1) and 60 (if all voted 5). Now we have two values. If we divide the total value of all votes with the total number of votes, we have the average rank of the product (eg 48/12 = 4) 2) Now, when we know the average, lets do as KDLadage described: "In other words, multiply the number of votes that the product has received by the square of the average vote minus 1. " This means, simply put, that a product with a whole lots of reviews may be equally worth as a product with a few but high ranks. As an example, look at this. We have book 1 where 4 people voted 5, and we have book 2 where 20 people voted 4. book 1: 4 x (5-1) ^ 2 = 64??? ehh... KD.. Have I missed something here? [/QUOTE]

Verification