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vicenobelium

Re:Quantopian for Sports Betting on Friday January 05, 2024 @08:26AM (#38878800)
Hi HN,

I recently ran data analysis on NBA players/games, but realized I had no way to test different algos without using real money.

I developed an app to help me track the performance of my algos on real games and odds data.

I’d love to get feedback from alpha testers on the platform before building additional features like back testing against several years worth of data.

Send as much feedback as you like to the Contact Us email (it’s very much function over form at this point.)

P.S. For those who don’t know Quantopian, it was a product that allowed you to back test stock trading algos against years of market data.

My main concern about the SQL approach is that it seems unruly to have 30+ columns for revenue, profit, cash etc...though certainly makes sense from a performance standpoint.

Ask HN: What database is best for storing financial statements?

I want to store financial statements (income statement, balance sheet, cash flow) and run comparative operations on those statements. Ex: Find percentage increase in revenue for company A between year 1 and year 5. Find all companies that increased debt over past 5 years.I'm deciding between SQL or document-oriented db like Mongo (AWS DocumentDB). In SQL I would plan for each company-time...

( Read More... | 3 comments | 2 points | on HN )
Re:Ask HN: What data stores do stock exchanges use? on Wednesday March 11, 2020 @07:28PM (#22551915)
Thanks, that write-up was very helpful.
Re:Software Engineer Interview Guide on Wednesday March 11, 2020 @02:26PM (#22548698)
They can be, though aren't always, easier for two reasons. The first is that companies use the phone screen as a way to ensure a candidate reaches a basic threshold before spending the time and money to bring them onsite. So, in that vain it's more preponderance of the evidence that the candidate is good rather than beyond a reasonable doubt (which is the standard of the onsite).

The second is that the phone screen format isn't ideal for either the interviewer or interviewee and the questions themselves are sometimes a bit easier as a result.

Re:Ask HN: What data stores do stock exchanges use? on Wednesday March 11, 2020 @12:39PM (#22547199)
Thanks!

Ask HN: What data stores do stock exchanges use?

I'm interested in building a stock market-like application with orders, quotes, bid/ask prices etc...I can easily see this being represented in a relational database (and for my volume SQL would suffice), but I can't imagine real exchanges use SQL processing billions of order per day? What does their stack look like?

( Read More... | 6 comments | 29 points | on HN )