1. A computer readable medium having stored thereon a memory-chaining system having an artificial neural network structure modeling memory-chaining functions of a brain, comprising: a long-term memory network unit using an artificial neural network structure including a plurality of neurons; and a network control unit that connects the neurons of the long-term memory network unit with each other to realize a memory-chaining function; wherein each of the neurons of the long-term memory network unit has a radial-basis function main part that provides an activation intensity corresponding to similarity between an input vector and a centroid vector according to a radial-basis function; and a pointer part that holds pointer information about a mutually related other neuron, wherein the neurons of the long-term memory network unit are classified hierarchically by activation degree, and wherein the long-term memory network unit includes a neuron map part formed by assigning the plurality of neurons to different areas according to types of input vectors relevant to the neurons; an input area selector that selects an area relevant to an input vector from the plurality of areas included in the neuron map part; and an output area selector that selects an area to be outputted, from the plurality of areas included in the neuron map part.