PageRank solves the problem with flying colors. There is nothing wrong about having hidden constants that you tweak until you get the results you want. The alternative would be to, instead of coding what has become Google, attempt to find a more general solution. Maybe you'll find it. Maybe. And if you do, by the time you have, someone else will have come and made Google instead of you. And for what? Mathematical purity? Phobia of constants?
I suppose the author also feels much of physics is also bad, since it's riddled with constants upon constants, all of which are "ticking time bombs": http://en.wikipedia.org/wiki/Physical_constant
Now, if you accept that it can be improved, the author has a great point: trying to understand the role that this made up constant plays in the algorithm (and getting rid of it if possible) is a clear path to what might be an improvement.
Oh, and "physical constants" are not even remotely similar to using a made-up constant. Physical constants are measured experimentally, meaning that they "exist" in the object that the mathematical model tries to explain. Now tell me how do you measure ".85" being an "existing" constant in the "ranking of website importance" object that pagerank tries to model...
I did not say the author said PageRank was bad. I merely said that it being "bad math" was irrelevant to the real world.
> Oh, and "physical constants" are not even remotely similar to using a made-up constant. Physical constants are measured experimentally, meaning that they "exist" in the object that the mathematical model tries to explain. Now tell me how do you measure ".85" being an "existing" constant in the "ranking of website importance" object that pagerank tries to model...
I was just showing how flawed his π analogy (he was comparing π to PageRank constants), and his reasoning how π is a time-bomb are.
I don’t think physical constants are made up and they certainly aren’t hidden.
Besides, the paper you're referring to is 13 years old. Why drag it up now?
Surely a fully automated, self correcting algorithm exists to penalize spam sites and shitty content farms, and whoever comes up with it will be heavily rewarded financially for doing so, either because they will make major inroads in the search space, or because there will be a bidding war for the technology. That nobody has come up with it outside of Google either says it likely is outside of the engineering ability of humans to do it at the moment.
If you know the exact diameter of the sun, and calculate the circumference with 3.14159265358979 as an estimate for pi, then your error will be about 10 microns. Using a 14 digit estimate of pi, is never going to be a timebomb for any practical task. If the earth was round to 14 significant digits the highest mountains would tower 10 nanometers above the deepest valley.
Well, actually for almost everything humans do, this will never, ever fail you. In fact, I can't think of a single thing this will fail for outside of physics research or formal mathematics.
