Comments URL: https://news.ycombinator.com/item?id=46904496

Points: 2

# Comments: 1

Background: px dynamics was founded by me less than half a year ago, I have 15 years experience in short term power trading in European markets, esp. algo trading. I do some consulting to bootstrap the company with and build customer relations. Simultaenously, we're starting to build a product business. For that we have strengthened the team with a Senior ML Engineer (ex google) and a Head of Data with prior experience in setting up data pipelines in this domain. The products we build are in a broad sense trading signals, e.g. to help traders of renewable or flexible assets trade their positions better.

Role: So given that it is pretty early days, we're of course looking for a broader skillset to lead the development especially of the cloud and backend infrastructure (hetzner), but eventually also frontend applications. Techstack so far is obviously minimal (linux, python, bash, postgres/timescale), so there is plenty of room to also shape this. What we as a team value is simplicity, really clean code/architectures, excellent documentations and quality over speed. So we're not trying to glue together the next venture to scam a bunch of VCs, but to really build something excellent.

if that resonates with you, please reach out to me directly via the email address you'll find on our website.

you'll see the following prices for trading day 2021-12-29: Year 2022 settled at 225EUR/MWh or 22.5c/Kwh -- which is admittedly crazy high. But year 2023 settled at 128 EUR and the following years below 100 EUR. This is plausible as we the high prices we have now provide a strong incentive to build new electricity generating facilities in the future. and wind and pv are already profitable at prices 50-80 EUR/MWh without extra subsidies. lastly: there are still enough retailers selling you power at prices below what your retailer wants to charge you, check https://verivox.de/ or the likes for alternatives

- allow for programmatically writing new parameters

- allow the production models to programmatically query the parameters they're supposed to use

- do versioning on the parameter sets, as it's useful to keep the history of parameters for backtesting/reporting

- have some logic of structuring the parameter sets thrugh grouping/tagging and/or a hierarchical model so all sets are not just one big mess

- finally allow of course for different parameter set structures, as different models have different parameters

- ideally a GUI

I didn't manage to find anything like it online, are you aware of anything? How are you dealing with that topic if it's an issue for you as well?

thanks a lot in advance!

Comments URL: https://news.ycombinator.com/item?id=29738103

Points: 4

# Comments: 6

The other day I tried to delete my udacity account. No button in settings, I mailed support, they asked my to mail legal (apparently they don't fwd mail..). From legal I received the following response:

Hello,

We are in receipt of your request to delete your account. We are sorry you want to leave the Udacity family; you will be missed.

Before we can proceed with fully processing your request, we need to verify your information. We take these steps to minimize risk to the security of your information and of fraudulent information and removal requests. Specifically, we ask that you provide the following pieces of information:

- Username and email address associated with your Udacity User Account (if different from the one you provided in your initial request);

- Online Courses currently or previously enrolled in;

- Approximate date of User Account registration;

- Country of residence; and

- A statement under penalty of perjury that all information in your request is truthful and that this is your User Account or that you have the authorization to make the request on behalf of the owner of the User Account.

If, after you have provided the above information, we are unable to verify your identity and/or authority to issue the request, we may reach out to you for further verification information.

As a reminder, any deletion actions we take in response to your request are not reversible and may result in Udacity (or you) being unable to retrieve information about your account, enrollment, and records of completion. Please also keep in mind that all removals of such information are subject to requirements to maintain certain data in our archives for legal or legitimate business purposes.

If you have any questions about this request please see our Privacy Policy or let us know.

Thanks for your understanding.

Udacity Legal Team

time series DBs are a hot topic these days but given the focus on IoT -- or more generally measurement data -- the underlying data model typically assumes that for one time series there is only one data point per period of time, so it's really just one dimensional. However, if you work for example with forecast data (say for a stock price) you might wanna store every version of a forecast and not overwrite the previous forecast. What are in your experience the best time series databases that (natively) support two or more dimensions and also allowing queries on these other dimensions like "get forecast for delivery-time from x to y where forecast_time = z"?

Thanks! sambucini

Comments URL: https://news.ycombinator.com/item?id=18568216

Points: 19

# Comments: 9