3 ms·
Based on this other URL: http://www.indeed.com/jobtrends?q=ruby%2C+drupal&l= http://www.indeed.com/jobtrends?q=ruby%2C+drupal&l= and some clicking back and fo
by mechanical_fish 17y ago
Based on this other URL:
http://www.indeed.com/jobtrends?q=ruby%2C+drupal&l= http://www.indeed.com/jobtrends?q=ruby%2C+drupal&l=
and some clicking back and forth between the "Absolute" and "Relative" scales... I don't know what to think. The "Relative" numbers make no sense, so I wouldn't trust them for any purpose whatsoever. "Percentage growth: 375000?" I wish I could erase those graphs from my mind lest my subconscious be tainted by the memory of a single pixel.
Someone needs some unit tests, or perhaps a math teacher.
- tamersalama 17y ago:) well spotted
- lunchbox 17y agoExample: at the beginning of the time period there was 1 Drupal posting, and now there are 3751. Each increase of 1 represents an additional 100% growth over the original, so you have 3750 * 100% = 375,000% growth. A poor way to measure rapid growth, but that seems to be their system.
- mechanical_fish 17y agoI think you're probably correct, but "poor" is much too generous a description of such a methodology. It rates at least an "awful", and "garbage" is not unwarranted. Consider that it is only an accident of fate that there was merely 1 Drupal posting at time 0. If there had been two, I guess the entire trendline would be half as big. Or consider this even wackier example: http://www.indeed.com/jobtrends?q=ruby%2C+mongodb&l=&relative=1 http://www.indeed.com/jobtrends?q=ruby%2C+mongodb&l=&... This goes to show that the algorithm is at least smart enough not to explode when dividing by zero. (There were, I'm pretty sure, zero mentions of "MongoDB" in job postings in 2005.) But, then, what does this graph measure? What are we dividing by for MongoDB? The number of postings at some arbitrary later time?
- xanderhud 17y agoWhat's the proper way to do this?
- tamersalama 17y agoHow are fluctuations calculated if the reference is the start point? Could these be 'deleted' posts?
- fauigerzigerk 17y agoExactly. It would be useful if you could set the starting point of the period you're interested in.
- tvon 17y agoand why does Django look massive here: http://www.indeed.com/jobtrends?q=ruby%2C+java%2C+python%2C+perl%2C+django%2C+rails&l=&relative=1 http://www.indeed.com/jobtrends?q=ruby%2C+java%2C+python%2C+... but not here: http://www.indeed.com/jobtrends?q=ruby%2C+django&l= http://www.indeed.com/jobtrends?q=ruby%2C+django&l= ?