In one embodiment of the present invention, an apparatus may be used for supporting a survey based on information in an Internet medium. The apparatus comprises: a first acquisition hardware unit, wherein the first acquisition hardware unit acquires first evaluation information representing a degree of evaluation acquired by a survey of a real society pertaining to a prescribed target; a second acquisition hardware unit, wherein the second acquisition hardware unit acquires second evaluation information representing a degree of evaluation in the Internet medium pertaining to the prescribed target; and an estimator hardware unit, wherein the estimator hardware unit estimates a bias in information in the Internet medium based on a deviation of the second evaluation information from the first evaluation information.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An apparatus for supporting a survey based on information in an Internet medium, the apparatus comprising: a first acquisition hardware unit, wherein the first acquisition hardware unit acquires first evaluation information representing a degree of evaluation acquired by a survey of a real society pertaining to a prescribed target; a second acquisition hardware unit, wherein the second acquisition hardware unit acquires second evaluation information representing a degree of evaluation in the Internet medium pertaining to the prescribed target; and an estimator hardware unit, wherein the estimator hardware unit estimates a bias in information in the Internet medium based on a deviation of the second evaluation information from the first evaluation information. 2. The apparatus according to claim 1, wherein the first acquisition hardware unit acquires the first evaluation information representing the degree of evaluation acquired by the survey in the real society pertaining to the prescribed target belonging to a prescribed category, the second acquisition hardware unit acquires the second evaluation information representing the degree of evaluation in the Internet medium pertaining to the prescribed target belonging to the prescribed category, and the estimator hardware unit estimates the bias in the information in the Internet medium to the prescribed category based on the deviation of the second evaluation information from the first evaluation information. 3. The apparatus according to claim 1, wherein the first acquisition hardware unit acquires, for each target among a plurality of targets, the first evaluation information representing the degree of evaluation acquired by the survey in the real society pertaining to each of the plurality of targets, the second acquisition hardware unit acquires, for each target among the plurality of targets, the second evaluation information representing the degree of evaluation in the Internet medium pertaining to each of the plurality of targets, and the estimator hardware unit estimates the bias in the information in the Internet medium by averaging, across the plurality of targets, the deviation of the second evaluation information from the first evaluation information on each target among the plurality of targets. 4. The apparatus according to claim 1, wherein the first acquisition hardware unit acquires, for each target among a plurality of targets belonging to any of a plurality of categories, the first evaluation information representing the degree of evaluation acquired by the survey in the real society pertaining to each of the targets, the second acquisition hardware unit acquires, for each target among the plurality of targets belonging to any of the plurality of categories, the second evaluation information representing the degree of evaluation in the Internet medium pertaining to each of the targets, and the estimator hardware unit estimates the bias in the information in the Internet medium by performing regression while adopting, as an objective variable, information representing the deviation of the second evaluation information from the first evaluation information on each target among the targets, and adopting, as an explanatory variable, information representing whether each of the targets belongs to each category of the plurality of categories. 5. The apparatus according to claim 1, further comprising: a third acquisition hardware unit, wherein the third acquisition hardware unit acquires third evaluation information representing a degree of evaluation in the Internet medium pertaining to another target related to the prescribed target; and a predictor hardware unit, wherein the predictor hardware unit predicts an actual evaluation pertaining to said another target based on the bias and the third evaluation information. 6. An apparatus for supporting a survey based on information in an Internet medium, the apparatus comprising: a first acquisition hardware unit, wherein the first acquisition hardware unit acquires, for each policy among a plurality of policies belonging to any of a plurality of categories predefined according to a policy of a target of the survey, a first evaluation value representing a degree of affirmative evaluation acquired by a survey in a real society pertaining to each policy among the plurality of policies; a second acquisition hardware unit, wherein the second acquisition hardware unit acquires, for each policy among the plurality of policies, a second evaluation value representing a degree of affirmative evaluation in the Internet medium pertaining to each policy among the plurality of policies; an estimator hardware unit, wherein the estimator hardware unit estimates a bias in information in the Internet medium by averaging, across the plurality of policies, a degree of a deviation of the second evaluation value from the first evaluation value on each policy among the plurality of policies; a third acquisition hardware unit, wherein the third acquisition hardware unit acquires a third evaluation value representing a degree of affirmative evaluation in the Internet medium pertaining to the policy of the target of the survey; and a predictor hardware unit, wherein the predictor hardware unit predicts a degree of actual affirmative evaluation pertaining to the policy of the target of the survey by correcting the third evaluation value based on the bias. 7. An apparatus for supporting a survey based on information in an Internet medium, the apparatus comprising: a first acquisition hardware unit, wherein the first acquisition hardware unit acquires, for each policy among a plurality of policies belonging to any of a plurality of categories predefined according to a policy of a target of the survey, a first evaluation value representing a degree of affirmative evaluation acquired by a survey in a real society pertaining to each policy among the plurality of policies; a second acquisition hardware unit, wherein the second acquisition hardware unit acquires, for each policy among the plurality of policies, a second evaluation value representing a degree of affirmative evaluation in the Internet medium pertaining to each policy among the plurality of policies; an estimator hardware unit, wherein the estimator hardware unit estimates a regression expression having, as a regression coefficient, a bias in information in the Internet medium, by performing regression while adopting, as an objective variable, a degree of a deviation of the second evaluation value from the first evaluation value on each policy among the plurality policies and adopting, as an explanatory variable, information representing whether each policy among the plurality of policies belongs to each category of the plurality of categories; a third acquisition hardware unit, wherein the third acquisition hardware unit acquires a third evaluation value representing a degree of affirmative evaluation in the Internet medium pertaining to the policy of the target of the survey; and a predictor hardware unit, wherein the predictor hardware unit predicts a degree of actual affirmative evaluation pertaining to the policy of the target of the survey by setting the third evaluation value as the second evaluation value in the objective variable of the regression expression.