Abstract: Provided is an apparatus and method which prioritizes transaction objects included on a reference list. The reference list contains transaction object information corresponding to the transaction objects. The apparatus stores a user's history of actions performed on the transaction objects and an interest parameter based on the user's history of actions. The interest parameter is used to select one or more transaction objects. The apparatus displays the reference list in an order prioritizing the selected transaction objects over non-selected transaction objects.

Abstract: Information related to a privilege is caused to be presented so as to increase the probability that a user purchases a transaction target. An information processing apparatus detects a predetermined operation of a user which is defined as an operation where purchase motivation for a transaction target is higher than that of an operation to display transaction target information related to the transaction target and which is other than an operation of a user which is necessary to purchase in a transaction site where the transaction target can be purchased. When the predetermined operation is detected, the information processing apparatus causes privilege information related to a privilege which is given to the user to be presented on condition that the user purchases the transaction target targeted by the detected operation.

Abstract: Provided are an information processing apparatus, an information processing method, an information processing program, and a recording medium storing thereon the information processing program, which can prevent a transaction disadvantageous to a user or registration of disadvantageous transaction objects. The information processing apparatus extracts a transaction object, which is identical to or related to a transaction object to be selected by a user and with which a condition more advantageous than the corresponding transaction object is associated, from a storing means that stores information on transaction objects referred to in the past time by the user, and presents the extracted transaction object to the user.

Abstract: Provided are an information processing apparatus, an information processing method, an information processing program, and a recording medium storing thereon the information processing program, which are capable of dividing and displaying a number of elements on a plurality of pages while maintaining the property that it is easy to compare elements with each other. A plurality of element groups is determined based on a classification criterion corresponding to an attribute of an element that constitutes a list, and the respective element groups are allocated to any one of a plurality of pages so that all elements included in each of the determined plurality of element groups are displayed on the same page.

Abstract: Provided are an information processing apparatus, an information processing method, an information processing program, and a recording medium storing thereon the information processing program, which can prevent a transaction disadvantageous to a user or registration of disadvantageous transaction objects. The information processing apparatus extracts a transaction object, which is identical to or related to a transaction object to be selected by a user and with which a condition more advantageous than the corresponding transaction object is associated, from a storing means that stores information on transaction objects referred to in the past time by the user, and presents the extracted transaction object to the user.

Abstract: Information related to a privilege is caused to be presented so as to increase the probability that a user purchases a transaction target. An information processing apparatus detects a predetermined operation of a user which is defined as an operation where purchase motivation for a transaction target is higher than that of an operation to display transaction target information related to the transaction target and which is other than an operation of a user which is necessary to purchase in a transaction site where the transaction target can be purchased. When the predetermined operation is detected, the information processing apparatus causes privilege information related to a privilege which is given to the user to be presented on condition that the user purchases the transaction target targeted by the detected operation.

Abstract: Provided are an information processing apparatus, an information processing method, an information processing program, and a recording medium storing thereon the information processing program, which are capable of dividing and displaying a number of elements on a plurality of pages while maintaining the property that it is easy to compare elements with each other. A plurality of element groups is determined based on a classification criterion corresponding to an attribute of an element that constitutes a list, and the respective element groups are allocated to any one of a plurality of pages so that all elements included in each of the determined plurality of element groups are displayed on the same page.

Abstract: Provided is a technique for allowing a user to easily find a transaction object on which the user wants to obtain information from a reference list. An information processing apparatus includes: a specifying means that specifies an interest object of a user based on a history of actions of the user on a transaction object, which is stored in a history storing means; a selecting means that selects a transaction object related to the interest object specified by the specifying means among transaction objects registered in a reference list that stores references to transaction object information on a transaction object; and a controlling means that displays the reference list so that a display manner of information indicating the transaction object selected by the selecting means is more easily visible than a display manner of information indicating a transaction object that is not selected by the selecting means.

Abstract: In selection of transaction objects, attribute fields regarded as important by a user are specified.