1. A bio-item searching apparatus that searches for a target bio-item with a keyword input by a user, comprising a processor, a storage device, and an output device, wherein the storage device includes: a bio-item literature set storage unit that stores one or more bio-item literature sets having a literature in which a bio-item name is described for each of a plurality of bio-items, and an all-literature set storage unit that stores an all-literature set having all literatures included in each of the bio-item literature sets, and the control processor includes: a number-of-literatures acquiring unit that searches each of the bio-item literature sets with the keyword to acquire a number-of-literatures, Nh, including the keyword for each of the bio-items, and searches the all-literature set with the keyword to acquire a number-of-literatures including the keyword, Nk; a candidate bio-item selecting unit that selects the bio-items in which the number-of-literatures Nh is 1 or larger as candidate bio-items; a table creating unit that creates, for each of the candidate bio-items, a number-of-literatures table constituted by a) the number-of-literatures Nh, b) a number-of-literatures each not including the keyword and including the bio-item name, the number-of-literatures in the bio-item literature set of the bio-item minus Nh; c) a number-of-literatures each including the keyword and not including the bio-item name, Nk−Nh, and d) a number-of-literatures each not including the keyword and not including the bio-item, the total number-of-literatures in the all-literature set minus the number-of-literatures in the bio-item literature set minus Nk+Nh; a correlation score calculating unit that calculates a correlation score between the bio-item and the keyword based on a statistical calculation by using the number-of-literatures table for each of the candidate bio-items; and an output unit that outputs the candidate bio-items to the output device based on the correlation score calculated by the correlation score calculating unit.
1. A bio-item searching apparatus that searches for a target bio-item with a keyword input by a user, comprising a processor, a storage device, and an output device, wherein the storage device includes: a bio-item literature set storage unit that stores one or more bio-item literature sets having a literature in which a bio-item name is described for each of a plurality of bio-items, and an all-literature set storage unit that stores an all-literature set having all literatures included in each of the bio-item literature sets, and the control processor includes: a number-of-literatures acquiring unit that searches each of the bio-item literature sets with the keyword to acquire a number-of-literatures, Nh, including the keyword for each of the bio-items, and searches the all-literature set with the keyword to acquire a number-of-literatures including the keyword, Nk; a candidate bio-item selecting unit that selects the bio-items in which the number-of-literatures Nh is 1 or larger as candidate bio-items; a table creating unit that creates, for each of the candidate bio-items, a number-of-literatures table constituted by a) the number-of-literatures Nh, b) a number-of-literatures each not including the keyword and including the bio-item name, the number-of-literatures in the bio-item literature set of the bio-item minus Nh; c) a number-of-literatures each including the keyword and not including the bio-item name, Nk−Nh, and d) a number-of-literatures each not including the keyword and not including the bio-item, the total number-of-literatures in the all-literature set minus the number-of-literatures in the bio-item literature set minus Nk+Nh; a correlation score calculating unit that calculates a correlation score between the bio-item and the keyword based on a statistical calculation by using the number-of-literatures table for each of the candidate bio-items; and an output unit that outputs the candidate bio-items to the output device based on the correlation score calculated by the correlation score calculating unit. 13. A bio-item searching terminal apparatus comprising a control unit, an input unit, and an output unit connected to the bio-item searching apparatus according to claim 1 , wherein the control unit includes: an input control unit that performs control to cause a user to input any one, two or all of the keyword, genome region information and identifier information through the input unit; a transmitting unit that transmits any one, two, or all of the keyword, the genome region information and the identifier information input by control of the input control unit to the bio-item searching apparatus; and a receiving output unit that receives and outputs the candidate bio-item, the related bio-item, or a co-occurrence keyword correlation score based on at least the keyword transmitted by the transmitting unit and output from the bio-item searching apparatus, to the output unit.