Viewing profile — bfrink
bfrink
HN member- Joined
- Mon, Dec 28, 2015, 8:26 PM UTC
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- 40
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- 21 items
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About bfrink
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Recent public activity
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Comment #45353266
Seems that something's been broken. The normal way to look up ticket images manually at https://wmq.etimspayments.com/ no longer works, returning "Unauthorized" even after properly…
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Comment #43705379
Indirect rates are negotiated. What are the incentives for the government negotiators to get the lowest possible rate? I honestly don't know; I'd like to understand more about the …
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Comment #42200083
Programs like Stars College Network ( https://starscollegenetwork.org/ ) and Questbridge ( https://www.questbridge.org/ ) help to bridge this gap in knowledge. They are really good…
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Comment #41703335
Interesting - I have a contact in the CTLO (the real teaching-oriented group) and they have said they have no contact with the CTME and are discouraged from interacting with them. …
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Comment #41700567
Agree on the sensitivity wrt traditional (East Coast) media. Imagine what it takes for the president (and provost, and general counsel, and chief communications officer, and ...) o…
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Comment #41380634
32% of 2023 graduates had any debt at all; the average total indebtedness (over all four (or more) years) of that 32% was $15,896[0]. Not bad for a school that costs $86,886 _per y…
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Comment #41380328
Caltech accepts a tiny, tiny amount of transfers in total; less than ten per year. The imbalance in transfer admissions is not significant.
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Comment #41305738
This (seemingly elegant) Virginia-class implementation feels like an inheritance of the Rickover and SUBSAFE philosophy. Not sure how the surface Navy would accept anything less.
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Comment #39948266
At Caltech, students from families making $90K or below, will receive a no loan financial aid package (package will consist of grants and work-study).[0] [0] https://www.admissions…
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Comment #35433488
A large Great Lakes cargo vessel was recently completed by Fincantieri Bay Shipbuilding ( https://en.wikipedia.org/wiki/MV_Mark_W._Barker ). Great Lakes vessels need to be built in…
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Comment #27668483
You mean like this billionaire philanthropist? https://chanzuckerberg.com/science/programs-resources/open-s...
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Comment #26347134
Value investing like Fama French HML? Value like the factor that's gotten trounced over the last decade?
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Comment #25838453
Agree - real world discrete things should be modeled as such. If MPV was $0.23, then model $0.23 increments - whether you use fixed point, or the cardinality of increments, who car…
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Comment #25837699
In your example, you're only a penny off if you truncate 0.199999999999999996, rather than rounding (which is described in IEEE 754!). Here's a real simple example. Let's say your …
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Comment #25835270
This is a common misapprehension. Yes, fixed precision is great for accounting (like your bank statement) but when you're making a predictive model of asset prices (or higher momen…
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Comment #25443918
Calcbench ( https://www.calcbench.com/ ) does this, but as others point out, XBRL is a bit of a mess
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Comment #15881711
There are about 30,000 institutionally-investable stocks in the world. They have ~252 closing prices per year. This is the thing you're trying to predict, so it forms the outputs o…
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Comment #13776064
I think there are other wealth management-related startups that are actually changing the paradigm, e.g., Wealthfront, whereas (to the extent of my knowledge) Addepar is helping th…
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Comment #13756337
I think perhaps the worst thing about Addepar is the way it sells itself to prospective (inevitably young) employees: that's it's on a mission to "fix finance." While there are som…
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Comment #12175026
Kaiser Permanente has just such a project: http://digitalrepository.aurorahealthcare.org/jpcrr/vol2/iss...
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