Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Comparing Domain Authority Scores
-
Since your scale (like PageRank) is a logarithmic scale, it makes it hard to judge the distance between 2 scores. Can you give me a rule of thumb. For PageRank, each jump is an exponential jump - so that a PR6 is perhaps 10 times stronger than a PR5.
What is the log base that SEOMoz uses. Should I assume that a 60 is 10 times stronger than a 50?
This is important when it comes to measuring progress because growth is going to get more difficult as you move up the scale and I need to communicate the distance between our current Authority score and our goal.
Thank You!
-
Talked to Dr. Matt, and he said that, if you just want an estimate, take the log (base 10). You'll get a value from zero to two that will be roughly linear, and then you can scale it up to whatever range you need.
-
Hi Peter,
I have a follow up question to your reply; I want to try and use DA together with other linear metrics to create my own value that I can use for different purposes.
Considering your answer above it seems to me, and I have very little mathematical knowledge, that there is no exact log base I can use to get an "exact" representation of what a DA value is trying to express. Does that seem like a correct understanding?
Then, from a practical point of view, how would you recommend I convert DA values to a linear scale? Close enough is good enough i guess.
Thanks //David
- topic:timeago_earlier,6 months
-
I'm afraid the answer is "it's complicated" - here's the longer version, from Dr. Matt Peters, our head of Data Science:
"PA and DA are the output from a machine learning model that we then rescale to values between 1-100. The raw output from the model is dimensionless and doesn't have any interesting meaning. The rescaling is linear, but the inputs to the model are rescaled logarithmically before being used in the model. We use the natural log (base e) but the base is pretty arbitrary since one can transform from one base to another by changing coefficients, and the coefficients themselves are set in a regression. The key point is that since the inputs have a log applied to them it is much harder to increase DA from say 70 to 80 then it is from 30 to 40."
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Domain Audit
Hi What is the best tool out there to doing a full brand audit for company. They've created at least 15 websites and have possibly many domain names which have been ordered by different people over many years. I need to find the quickest and best tool to do this with. Any suggestions would be great.
Moz Pro | Nov 13, 2015, 3:06 PM | Cocoonfxmedia0 -
Compare sites?
I'm frustrated, so want to ask a stupid question....My site.. www.seadwellers.com outranks my biggest competitor in most Moz catagories... www.rainbowreef.us ...EXCEPT Facebook likes...(he has a ton) **And yet, rainbowreef.us outranks me in most keywords on
Moz Pro | Apr 16, 2015, 1:45 PM | sdwellers
Google?! I know it's not simple...but Can anyone take a quick peek and give me any insight as to why??? ** Example "Dive Key Largo" keyword...he is #1 and I am #5...typical in the most important keywords!0 -
Automatically Check List of Sites For Links To Specific Domain
Hi all, Can anyone recommend a tool that will allow me to put in a list of about 200 domains that are then checked for a link back to a specific domain? I know I can do various link searches and use Google site: command on a site by site basis, but it would be much quicker if there was a tool that could take the list of domains I am expecting a link on and then find if that link exists and if so on what page etc. Hope this makes sense otherwise I have to spend a day doing it by hand - not fun! Thanks,
Moz Pro | Jun 6, 2014, 8:27 AM | MrFrisbee
charles.0 -
How to track all domain keywords?
Hello, lets say I have domain www.example.com I want to track rankings of www.example.com/product and www.example.com/anotherproduct with different keywords, so do I have to set up 2 different campaigns? Or is it possilble to track whole root domain with paths? Thanks!
Moz Pro | Jan 7, 2013, 12:19 AM | Rokas0 -
How is domain authority related to country top level domains?
I've noticed that for some country top level domains (tld) the domain authority returned by open site explorer is based on the domain that has been registered within the tld. For example, domainname.co.uk provides a domain authority specific to the domain. However, for some other country top level domains, this does not appear to be the case. Examples I have found include: domainname.co.nr domainname.co.pt domainname.co.ee For these top level domains the domain authority seems to be the same for every domainname, seemingly implying the domain authority is for the top level domain itself rather than for the domain. Is this a common situation for many country top level domains, so that what I see going in here is the tip of a large iceberg, or does this situation just apply to a very isolated set of country top level domains?
Moz Pro | Nov 16, 2012, 7:30 PM | MichaelCorfman0 -
Keyword Difficulty Score Not Available
What exactly does this mean? That the service is down? Or the score will never be available? It seems like I get that and then the tool gets stuck and I get no other data.
Moz Pro | Sep 7, 2012, 6:03 PM | endlessrange0 -
Why are my sub-domains ranking higher than my Root Domains?
I have just noticed that my sub-domains are ranking higher in Mozrank and Moztrust than the root domain - that seems nuts. Am I doing something wrong?
Moz Pro | Apr 14, 2012, 7:44 PM | simonberenyi0