Hi guilaume Klein
Yes, they are continuous vectors. One example of input is a sequence of point in online handwritten. But we also extract more features, so the input is a sequence of real number vector as follows
[v1, v2, v3, …, vn]
[c1, c2, c3 … cm]
where vi is a vector of real number and cj is a character in ground truth of handwritten.
Thanks for your consideration