Archive for March 2011


Evan Talking Jobs

March 28th, 2011 — 8:00pm

Evan is a smart dude, and occasionally he blogs. Sometimes it’s about playing jokes on Canadians who confuse his twitter handle with a famous Canuck, but sometimes it’s gold. His post yesterday deconstructing the way people go about choosing a job is one of the latter.

I think every college student would be well-served to have some guidance on how to choose a job or a career. And the problem starts way before college; high school students pick colleges, which are long term expensive decisions, basically on a whim. It all seems kind of insane looking back.

Company cultures, hierarchies, job roles, products, businesses and dozens of other factors that will impact your daily life, probably making the difference between being happy and miserable at work, at never formally taught or even discussed. I think it’s one of the reasons that startups seem so magical to so many, because they appear to break rules when in reality they just do things differently and the rules were never there in the first place.

This is remarkably true for me. My first job out of undergrad was pretty underwhelming from a culture standpoint. While that alone didn’t drive me to smaller, younger companies (I had been interested in them for a good while) it certainly accelerated my path to working at them.

And I don’t disagree that there is a problem. The paradigm at Tech (for IEs) seemed to be: interview with Coke/Home Depot if you kinda like supply chains, otherwise one of the various consulting firms. Take whichever one offers you the most money. I managed to stay out of that cycle, but still didn’t get it right.

So I’m not sure how you go about teaching these ideas. I knew I didn’t want to be an electrical engineer after doing a co-op semester. I knew I didn’t want to work for a 100,000 person company after 6 months of politics blocking our projects that had a proven ROI and tons of operational support. Could I really learn those things without being truly exposed to them?

Maybe that means the answer is more internships. Work for whoever you can when it’s still early enough that no one thinks your just bouncing around jobs. I did 3 internships during my 2 years of grad school, plus other little projects on the side.

That’s the only way I was able to figure out what I was passionate about and know the kind of workplace I wanted to be a part of.

3 comments » | Startup

Differences in the Two Elo Systems

March 23rd, 2011 — 7:23pm

Assuming that you read my last post about updating the MLS Elo Rating system, you’ve probably been on the edge of your seat waiting for the revised end-of-season ratings. Well, here you go!

The big difference is that, in my opinion, game results (win/tie/loss) were being heavily overvalued against goal differential, especially for playoff games. 10-15% of the games were having way too much effect on the overall end-of-season ratings that should be based, at least somewhat, on all 30-something games.

I’m much happier with the balance between the two now.

Comments Off | Sports, Sports Stats

Serious Updates to the Elo Ratings

March 21st, 2011 — 9:53pm

For the first time in recorded history, I’ve changed my mind on something.

After some input from a few people (including one of the guys from http://www.smartfootballrankings.com/) and a bit of experimenting I’ve made some very significant changes to how the Elo Ratings are calculated. As of right now I haven’t updated the original pdf, so you can still check out the basics for the original calculations. I expect to have the new version up with all the changes spelled out by the end of the week.

Or you can just read on!

The first and biggest change is that the ratings are now iterative. What does that mean exactly? Well it means that I run through the whole season 15 times in a row, recalculating after each game, in order to get the final ratings. I got to 15 loops because that’s the number of iterations I found to be necessary for the ratings to change less than 1/100 of 1% on each additional go around.

The two big pros I see from this method:

1) It makes sure that teams are accurately rated for each match earlier in the season. If Real Salt Lake turns out to be terrible this year (they won’t) we don’t want to give opponents too much credit for beating them early in the season when we thought they were the best team in the league.

2) It gives games more meaning. Each game is calculated in there 15 times now rather than just once. In a league that will only play 34 games this year, that means I should be able to get reliable ratings a little earlier in the year than halfway through this time, and hopefully have a better sense of what the results mean rather than just where the team started the season.

The biggest con:
I could not find one single example of anyone else doing this, so I kinda just played around with stuff until I was happy with how the numbers were coming out.

So with that gigantic looming potential negative in mind, allow me to explain some of the other changes.

K-factors, the values that change based on the game’s setting, have been drastically reduced. Last time it was 15 for a regular season game, 30 for a playoff game, and 45 for the MLS Cup Final. Now those numbers are 1, 1.25, and 1.5 respectively. This was done mostly for cosmetic reasons. When I kept the numbers at 15/30/45 for 15 iterations the ratings tended to span from 1200-1700 rather than the 1350-1625 that we’re used to and seemed to drastically overvalue the MLS Cup Final as a rating point. 1/1.25/1.5 got the numbers in line with where they were previously.

What I really should do is go back through the ratings with a few different variations, and then see how the real results match up to the expected to results given each matchups rankings. For instance, a team with a 100 point advantage playing at a neutral site should win 64% of the time. That would give us the most accurate model, but it’s a lot of work I haven’t put in yet.

As for the calculations, I still set all beginning-of-season ratings by halving the difference between the previous year’s end-of-season rating and the 1500 base. So if Philadelphia Union ended at 1450, they would start the next season at 1475. I will re-run the entire season’s results off of those base values after each match day, incorporating all new results from that day at the same time. One other idea I played with was changing the home field advantage in the calculations by team, but couldn’t decide if that was a good idea so I held off.

I’ll do a follow up post either tomorrow or Wednesday with the end of year rankings under each method. Suffice to say that I really like the newer versions output a lot more. I think the previous method gave too much weight to results and not enough to goal differential.

And one final note, if you’ve actually made it this far, I caution you to remember what the MLS Elo Ratings are and what they are not. They do have a large proponent of saying which team is the best in MLS, but it is not strictly a power ranking. It looks at the sum of a team’s results on the season, and rates them by most to least impressive.

Phew, that was a lot of words for a lot of work.

Comments Off | Sports, Sports Stats

A Great Interview with Bill Gross

March 13th, 2011 — 9:28pm

First, let me be very open about one thing: I think Bill Gross is a top-5 entrepreneur of all time. First guy to do paid search, has started 5 billion dollar companies, and always seems to be out front of the next big idea. He’s brilliant, has accomplished a TON, and has given great insight every time I’ve heard him talk.

I am unabashedly proud of the fact that I’m one of the only 266 people on Twitter that he’s deemed worthy enough to follow. Bill Gates, Steve Case, Arnold Schwarzenegger, me, Jack Welch, etc. It doesn’t quite make sense, and must be entirely due to me tweeting about his talk at the GreenNet conference last spring, but I’m running with it.

This week he was Mark Suster’s guest on This Week in Venture Capital. It’s 80 minutes packed full of great stories and advice for anyone involved with running a business and eclipses the episode with rapper/entrepreneur Chamillionaire as my all time favorite.

Take some time, throw on some headphones, and give it a listen.

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Do Want!

March 2nd, 2011 — 8:36pm

And, let’s just say, there’s a little bit of money coming in soon that may let me justify one of these newfangled iPad 2‘s.

Comments Off | Random

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