Sequence models Introduction
Sequences
Represent data whose order carries information.
Before this
The intuition
A sequence is an ordered series of observations. A sequence model must account for relationships across positions, rather than treating every observation in isolation.
A concrete example
The sequences [1, 2, 3] and [3, 2, 1] contain the same values but describe opposite trends. Word order similarly changes meaning.
What to remember
Representing a sequence and modeling its dependencies are different tasks.
Check your understanding
Why might shuffling a time series change its meaning?
Reveal explanation
It destroys the original temporal order and the relationships tied to that order.