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wakkaflokka

465 karma · joined November 16, 2016

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wakkaflokka··on Goldman Sachs Is Setting Up a Cryptocurrency Trading Desk
Why not...

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wakkaflokka··on Call options used to bet that Bitcoin will go over $50K next year
This is an interesting question to me, because I know little to nothing about the cryptography involved with cryptocurrencies.

1) What's the probability of the cryptographic ciphers behind cryptocurrencies being broken?

2) If they were broken, is it possible to 'move' BTC or other coins to a new cipher?

I apologize if I'm using the 'cipher' terminology incorrectly.

wakkaflokka··on Bitcoin Takes Bigger Wall Street Stage with Smooth CME Debut
Yeah, that's not the prettiest way of describing it ;)

But if it really is just online gambling, is that in and of itself enough to sustain over the long term? I don't mean the ~20k BTC price, but the ecosystem itself. After all, casinos/lottery/gambling have been around for a long, long time.

wakkaflokka··on Bitcoin Takes Bigger Wall Street Stage with Smooth CME Debut
I mean a big price drop. I feel like insane drops in price and cryptocurrency go together like peanut butter and jelly.
wakkaflokka··on Bitcoin Takes Bigger Wall Street Stage with Smooth CME Debut
This is going to sound completely ridiculous but I'm going to posit this anyway.

Avoiding the debate of whether there are any widespread real-world usage for cryptocurrencies, is it possible that cryptocurrency is valuable (and has long-term staying power) simply because the ecosystem surrounding it is so much fun for a non-negligible swath of people?

I know this sounds ridiculous. But hear me out. The entire process of setting up exchange accounts, reading about alternative coins, jumping into the drama, worrying about massive gains or losses, buying hardware wallets, chatting with others doing the same thing, thinking about complex systems and new coins, etc. is a lot of fun.

Could it be that cryptocurrencies are somewhat of a 'simulation currency trading market' that just so happens to allow you to cash in and cash out with fiat currency?

I have little doubt that the current value of BTC and other coins will blow up in the future, and if you've got anything more than disposable income invested in it, you'll probably get burnt really bad. I think it's almost a given. But I suspect that the idea of cryptocurrency is here to stay, at least for my lifetime. Solely because it's fun. But of course like anything, I could be wrong.

wakkaflokka··on Bitcoin Takes Bigger Wall Street Stage with Smooth CME Debut
Serious question - is there any doubt that one can successfully convert BTC to fiat? I've done it many times on the major exchanges (Gemini & Coinbase) with absolutely no problem.
wakkaflokka··on AIM will be discontinued today
I wish I could be omniscient for a few minutes just to know what happened to all the people I've A/S/L'd during childhood. Or maybe I don't want to know - I imagine some of them probably died from old age.
wakkaflokka··on Getting Crazy with Windows Subsystem for Linux
I love WSL, but really want GPU passthrough support in the future.
wakkaflokka··on Ask HN: What business you can start under $100?
I wanted to do this at one point with cryptocurrencies.

Use historical pricing data, NLP and comment volume on cryptocurrency subreddits and threads, frequency of search terms from Google analytics, major exchange status (Coinbase, Gemini, Kraken, etc. - whether they are up or down as dummy variables), frequency of crypto-related news, etc. all plugged in as features into models in Python and linked with Gemini trading API.

I started working on it and then got lazy (and bad RSI from being at my computer way too much) and it never materialized. Plus, I guarantee somebody else is doing it, or models like that probably aren't too successful anyway.

Could be fun though.

wakkaflokka··on What Would You Pay to Keep Your Digital Footprint 100% Private?
I always felt safe posting under pseudonyms, but then realized even if everything else is 100% private, somebody could theoretically use stylometry to identify me based on my posting style.
wakkaflokka··on Why Are Data Science Leaders Running for the Exit?
I've found this to be very true. I've got friends who were hired as data scientists, paid a great salary, and are finding themselves doing basic reporting and SQL querying all day. No statistical modeling, and certainly no building anything.
wakkaflokka··on Why Are Data Science Leaders Running for the Exit?
Thank you for this comment.

I joined a non-tech company as their first data scientist, and am now tasked with building up the data science efforts of the company. Your comment is really ringing true, though I've found the company here to be generally great to work with in terms of their flexibility. Funny enough, it took me months of working with the IT department to get a VM with 8-cores and 64 GB of RAM, or the ability to spin up AWS instances (none of the analysts at the company had ever asked for that). I'm happy with it though, it's a fascinating challenge and I'll admit at times I feel a bit in over my head.

In my experience, many companies are wanting to hire a lot more data scientists (and paying them six-figure salaries to boot), when what they really are looking for are what has traditionally been called a "data analyst" position. I.E., the entire sum of the job is Excel reporting and basic statistics, but instead wrapped in some "Machine Learning" marketing language.

As opposed to more long-term focus on what business problems can be solved by carefully cleaning data, building models, testing predictive power, and then deploying these models into production. Which obviously takes a lot more time, a lot more effort focusing on a single problem, and doesn't have nearly as many immediate deliverables that higher-ups can open their Outlook inbox and see. Naturally they then wonder why they are paying such a premium for someone who doesn't bring as many deliverables to the table as their 60-70k analysts. And then the data scientist wonders why he's spending most of his time sending Excel attachments. Definitely more of a problem in non-tech companies.

wakkaflokka··on Why Are Data Science Leaders Running for the Exit?
Felt the exact same way after reading this, thank you. The quotes on failure rate and 'vast majority' without any data to back it up, coming from someone who is a data strategist, was a little odd.

In my opinion, I feel like we are at peak "!@#@ data science! @#$@", and there will naturally be some deflation and correction in expectations just like any other occupation that comes out of the woodwork and is the 'sexiest job of the _____'. It's just the way it is. The article author seems to be carving himself out a niche to capitalize on this (which is fine).

wakkaflokka··on Japan eyes startup visa program
Can you expand on this? I've looked into several data science positions in Japan and they pay on-par with the U.S. From what I've experienced as a person who spent decades there, the key is to not work for a Japanese company...
wakkaflokka··on Don't Buy Anyone an Echo
I personally think any battle to prevent widespread adoption or use of always-on listening devices is fruitless. The only option is to provide safer alternatives with the same functionality.

My opinion is that the proper way to deal with the privacy implications of this are to come up with better alternatives - open-source voice assistants and entire ecosystems that do everything locally and that are easy to setup by Joe Shmoe. More in-depth auditing by security experts to see exactly what data is being sent from these devices back to their servers. Privacy laws that will take a company down and send people to jail when violated. Encryption on everything that can feasibly be encrypted.

The truth is that I have succumbed to the utility of my Google Home (and the enormous amount of fun I get from having it interface with Home Assistant), but I'd like to be a part of whatever the front line is in making sure these are as privacy-conscious as possible.

wakkaflokka··on Don't Buy Anyone an Echo
Sounds like he was just trying to show off his new gadgets? I've got Hue bulbs in every room, but if it's easier to flip a switch, I'll flip a switch (Hue bulbs still turn off/on with the regular wall switch...). What I think is useful is saying "turn off all the lights" when I'm about to go to bed, or if I'm out and about and want to make sure my lights are off.

The main reason I bought them was the ability to display multiple colors - I absolutely wear that out. I love having a red-colored room when I'm playing video games. Dimmed 'sunset' colors when watching a movie. Party colors when friends are over.

I think they're really fun, sometimes useful.

wakkaflokka··on Grad students protest GOP's tax hike and prepare to fight about tuition
Where do graduate students receive free housing?
wakkaflokka··on Google collects cell tower info even if location services are disabled
This is actually a fantastic idea. Please make it materialize!
wakkaflokka··on Popular Machine Learning algorithms
TPOT is also a good automl package that utilizes sklearn in Python. It's also actively under development. (I'm not affiliated, just an occasional user)

https://github.com/rhiever/tpot

wakkaflokka··on Cancer Doctors Cite Risks of Drinking Alcohol
Is this surprising? I'm pretty sure that any HN story about "x increases risk of y", where x is a popular activity or consumption item, is going to have a flood of people justifying their partaking in x.

As long as the risks of x are acknowledged, people can make their own choice as to whether they confer enough benefit from x to accept the y level of risk.

It'd be dishonest to pretend that alcohol doesn't have any benefits (social or otherwise). After all, it's been used for millennia. We can argue about whether those benefits outweigh the risks, especially as we learn more about what the risks are (i.e. like we did with tobacco). But I don't think it's particularly surprising or amusing. I'm sure you could name an activity in your life that has some amount of risk that you still choose to partake in because you gain benefit from it (and perhaps be inclined to comment on a story about it too - but I could be wrong).

wakkaflokka··on Pyro: PyTorch-Based Deep Universal Probabilistic Programming
Do you have a recommended resource on how to feature engineer with DNNs for use as inputs in other models?
wakkaflokka··on AutoML for large scale image classification and object detection
I love the concept of AutoML. One of the first things I'll do after cleaning data and engineering features is setup TPOT on another box and let it run while I continue on with my model building.

I wonder at what point the data cleaning, feature engineering, and model building will all be entirely automated. And what that means for the role of a data scientist within a non-tech organization.

wakkaflokka··on Ask HN: Do you hold any cryptocurrencies?
I bought ether immediately after the EEA launch and sold roughly around when the most recent China exhange ban news started. Made a 900% return and then pulled out. I've got it tucked away to take care of a house down payment, but I'll admit I'm occasionally tempted to put some back in. The truth is that I got lucky with ether; not sure I want to put any more fun money into it.
wakkaflokka··on Risk of false positives in fMRI of post-mortem Atlantic salmon (2010) [pdf]
You're right. I definitely don't mean to sound like I was an enlightened graduate student. Nothing ever passed FWE using Bonferroni, so we almost always resorted to using uncorrected p-values with cluster thresholding, with the cluster and voxel thresholds set from using alphasim (which gets the probability of having a cluster of that size significant from a random dataset, given the smoothness of your actual images).

If I recall correctly, all the major neuroimaging packages (AFNI, SPM, FSL) had options for cluster-size thresholding at the time. Along with tools like alpha sim to estimate cluster-level FDR (but I think that ultimately had issues with it's algorithm, discovered only a few years later...).

I just remember thinking that if the salmon paper had a reasonable cluster-threshold, none of the spurious voxels would have been considered in the final analysis.

Granted, several years later, a paper came out suggesting that method would inflate false positives (http://www.pnas.org/content/113/28/7900.full).

I imagine the neuroimaging field, particularly the stats part, has changed rapidly since I left.

wakkaflokka··on What are some of the most disliked programming languages?
There are some things that still aren't available in Python unfortunately. For example, there isn't a package that I'm aware of that will do a mixed-effects logistic regression in Python.
wakkaflokka··on Machine learning of neural representations of emotion identifies suicidal youth
In this case nested cross-validation would have been the proper way to do this. Run your entire model selection process (scaling - feature selection w/ CV - model selection - hyper paramter tuning w/ CV) on each of the folds in the outter CV loop. That will tell you how good your process is at building a model that generalizes.
wakkaflokka··on Standalone Signal Desktop
Can you expand more on your personal decision to be so privacy conscious?
wakkaflokka··on Google's latest iPhone rival off to a rocky start
This whole situation frustrates me to no end.

The Pixel 2 XL checks all of my boxes, which really aren't much: runs Android, has a large screen, is fast, has a good camera, is fast, is supported with updates for a few years, and is fast. My S7 Edge has made me truly understand the life pain and suffering that even minor lag can cause.

I implicitly assumed that any phone which would fit those criteria and be in the $700-$800 price range would also have a flawless screen. I'm not even talking about a Note8-level "holy shit that's amazing" screen - more like an S7 level of "nice screen" screen.

A speedy Android UI is so important to me though that I'm at least going to give the phone a shot when I receive it. "Maybe it's just a bad batch," I'm telling myself. And promptly RMA it or return it if there's any issues.

Part of me feels bad that I'm still willing to part with my money to try this phone out. Does that make me a sucker?

wakkaflokka··on Home Assistant is an open-source home automation platform running on Python 3
I love Home Assistant. I do wish that the auto-discovery feature was working in Windows 10.
wakkaflokka··on Google's 'Advanced Protection' Locks Down Accounts Like Never Before
Are there any websites where it doesn't work? Looks like in the comments on Amazon this doesn't work for LastPass. I was looking at getting it instead of a Yubikey. I got their bluetooth/nfc key that Google recommends, but I don't have a bluetooth card on my desktop.
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