Comment on Reddit, Stumbleupon, Del.icio.us and Hacker News Algorithms ExposedComments−gojomo18yUse of true clock time in these formulas penalizes posts that are submitted at low-traffic times.Using a virtual clock, such as a tick count based on traffic (number of other submissions, votes, pageviews, etc.), could adjust for this.−brent18yGood observation. I believe a similar concept is used in high frequency trading (in markets such as foreign exchange). So derivatives are not dt, but du where u is a surrogate for time in ticks.−bluelu18ythat's an interesting idea!
Comments
Use of true clock time in these formulas penalizes posts that are submitted at low-traffic times.
Using a virtual clock, such as a tick count based on traffic (number of other submissions, votes, pageviews, etc.), could adjust for this.
Good observation. I believe a similar concept is used in high frequency trading (in markets such as foreign exchange). So derivatives are not dt, but du where u is a surrogate for time in ticks.
that's an interesting idea!