Auto-grading decade-old Hacker News discussions with hindsight

It's fun to read some of these historic comments! A while back I wrote a replay system to better capture how discussions evolved at the time of these historic threads. Here's Karpathy's list from his graded articles, in the replay visualizer:

Swift is Open Source https://hn.unlurker.com/replay?item=10669891

Launch of Figma, a collaborative interface design tool https://hn.unlurker.com/replay?item=10685407

Introducing OpenAI https://hn.unlurker.com/replay?item=10720176

The first person to hack the iPhone is building a self-driving car https://hn.unlurker.com/replay?item=10744206

SpaceX launch webcast: Orbcomm-2 Mission [video] https://hn.unlurker.com/replay?item=10774865

At Theranos, Many Strategies and Snags https://hn.unlurker.com/replay?item=10799261

Okay, your site is a ton of fun. Thank you! :)

I'd love to see sentiment analysis done based on time of day. I'm sure it's largely time zone differences, but I see a large variance in the types of opinions posted to hn in the morning versus the evening and I'd be curious to see it quantified.

Yeah, I see this constantly any time Europe is mentioned in a submission. Early European morning/day, regular discussions, but as the European afternoon/evening comes around, you start noticing a lot anti-union sentiment, discussions start to shift into over-regulation, and the typical boring anti-Europe/EU talking points.

“Regular” to who? Pro EU sentiment almost only comes from the EU, which is what you’re observing. Pro-US sentiment is relatively mixed (as is anti-US sentiment) in distribution.

Comment dates on hn frontend are sometimes altered when submissions are merged, do you handle this case properly?

I like the "past" functionality here, maybe wished there was one for week/month I could scroll back as well.

Miss it for reddit as well. Top day/week/month/alltime makes it hard to find top a month in 2018.

> Pro EU sentiment almost only comes from the EU

Says who? But also, it doesn’t suggest what you imply. I could as easily conclude: “Oh wow, the people who actually experience the system like it that much? Awesome!”

It is handled on the Unlurker front page (you will see a little note that says “time adjusted for second chance”). The replay doesn’t do any adjustment for it, but I think that makes it reflect the reality of when the comments came in since the adjustments are like a temporary bump

e.g. how many are cali tech bros vs nyc fintec vs 10am moscow shillbot time