Databases Reference
In-Depth Information
Figure 6-6. Without keeping track of timestamps, we can't see time-
based patterns; here, we see a seasonal pattern in a time series
This idea, of keeping track of trends and seasonalities, is very impor‐
tant in financial data, and essential to keep track of if you want to make
money, considering how small the signals are.
Financial Modeling
Before the term data scientist existed, there were quants working in
finance. There are many overlapping aspects of the job of the quant
and the job of the data scientist, and of course some that are very
different. For example, as we will see in this chapter, quants are sin‐
gularly obsessed with timestamps, and don't care much about
why
things work, just if they do.
Of course there's a limit to what can be covered in just one chapter,
but this is meant to give a taste of the kind of approach common in
financial modeling.
