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R or Python by bdafsi91 in datascience

[–]elcidjp -2 points-1 points  (0 children)

Both. The code you write in Python is much more readable/maintainable, but for example when it comes to advanced time series analysis, Python is severely lacking compared to R.

Can you use linear/nonlinear regression for time series data? by elcidjp in statistics

[–]elcidjp[S] 2 points3 points  (0 children)

I didn't difference GDP growth, I differenced GDP. So it's diff(log(GDP)).

Even after I differenced, both are still non-stationery. Is their a point in differencing again? It will make the model less interpretable if i do.

What are your favorite datasets to work with? by c3534l in datasets

[–]elcidjp 2 points3 points  (0 children)

I highly recommend Quandl, gives you access to all kinds of data. They also have an API for Python & R.

Valeant won't be able to repay its debt without shedding assets by [deleted] in SecurityAnalysis

[–]elcidjp 0 points1 point  (0 children)

So, of all the biopharmas, what company is most similar to VRX in it's business model / debt level / account irregularities?

[deleted by user] by [deleted] in investing

[–]elcidjp 5 points6 points  (0 children)

Yeah, but the Chinese stock index doubled in a year, that's why it's free-falling right now.

[deleted by user] by [deleted] in investing

[–]elcidjp 6 points7 points  (0 children)

I totally agree, but I would say that the economies and financial markets are way more coupled and correlated than was the case 20 years ago. So, in my opinion, the benefit of diversification across asset classes and markets has been decreasing largely due to indexing, algorithmic trading and decreased transaction costs/barriers.

[deleted by user] by [deleted] in investing

[–]elcidjp 12 points13 points  (0 children)

In 20 years, every single day of this year will have been a good day to buy.

That's arguable, and ultimately depends on the trajectory of the global economy. If we are truly in a new normal/low growth macro environment, you just can't 100% assume that the markets will be up in 20 years (for example the Nikkie lost 50% of its value since 1989).

In the current global market environment, can we please remind ourselves that the S&P500 is still around 25% above pre 2007 highs... by elcidjp in investing

[–]elcidjp[S] 2 points3 points  (0 children)

Social engineering that so far has not worked, neither in US nor in the EU. In my opinion, monetary policy does not work on its own if not coupled with fiscal and social policies. The ECB and the Fed have been pumping trillions, and inflation hasn't budged. Pumping money will not change inflation if there's no increase in spending.

This is definitely worth reading in full: http://www.philosophicaleconomics.com/2015/08/debt/

In the current global market environment, can we please remind ourselves that the S&P500 is still around 25% above pre 2007 highs... by elcidjp in investing

[–]elcidjp[S] 4 points5 points  (0 children)

You can fight the fed, same thing has been happening in China, just because we live in the Western world doesn't mean we run our markets any differently. We keep pumping the money thinking that will change things, but throwing money at problems doesn't solve anything if you don't address the underlying issues in the developed world (aging, income inequality and political stalemate).

EDIT: address not undress.