[Encoding    (Basic ideas)]

(1) Previous Approaches

Previously proteins are represented as a discrete object in a continuum space:
For example, the plane curve on the left is approximated by a polygonal chain on the right in the figure below:

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Approximation by a polygonal chain

(2) Our Approach

In our method, we quantize the background space itself:
For example, to represent the plane curve on the left (below), the background space is divided into a collection of triangles. And the curve is approximated by a trajectory of triangles as shown on the right:

jpg image
Quantization of the background space