Vector quantization is a technique used in (usually lossy) data compression. The basic idea is to code a multidimensional vector space into a sub-space with lower dimension. The lower-space vector requires less storage space and the data is thus compressed. The transformation into the sub-space is usually achieved through projection or by using a code-book.
... any accidents.
Kururin was released in Japan and Europe but not in the United States.
However, because the GBA has no region lockout, European games will work fine ...