Abstract: An item recommendation system includes: a feedback receiving unit receiving feedbacks with respect to items by users; a feedback history storage unit storing information of feedbacks received at present or in the past by the feedback receiving unit in units of combinations of users and items; a relevance calculation unit calculating relevance between items base on first information indicating the degree in which the same user gives feedbacks to respective items and second information indicating the degree in which many users give feedbacks by using feedback information stored by the feedback history storage unit when receiving the feedback by the feedback receiving unit; and a recommendation unit immediately recommending items having higher relevance with respect to the item to the user who has given the feedback to the item by the feedback receiving unit based on the relevance calculated by the relevance calculation unit.

Abstract: Disclosed herein is an information processing apparatus including: a user answer evaluation section configured to determine whether a user answer to a question selected from a plurality of questions is correct or wrong; a user answer analysis block configured to compute at least a user wrong-answer percentage by use of the user answer evaluation result; a questioning condition setting block configured to compute a degree of similarity between the plurality of questions on the basis of the user wrong-answer percentage and, at the same time, compute an evaluation value of each of the plurality of questions by use of the degree of similarity; and a question selection section configured to select a question to be set from the plurality of questions on the basis of the evaluation value and a user correct-answer percentage in one of a predetermined period and a predetermined number of questions.

Abstract: Disclosed herein is an information processing apparatus including: a sensor information acquisition section configured to acquire sensor information outputted from a sensor for detecting a user motion and sensor information outputted from a sensor for obtaining a user current location; an action pattern detection block configured to analyze sensor information indicative of a user motion to detect an action pattern corresponding to the acquired sensor information from a plurality of action patterns obtained by classifying user's actions that are executed in a comparatively short time; a keyword conversion block configured to convert, on the basis of the sensor information indicative of a current location, the information into at least one keyword associated with the current location; and a text extraction block configured to extract a text for user presentation from a plurality of texts on the basis of the detected action pattern and the generated at least one keyword.

Abstract: An information processing apparatus includes an acquisition unit configured to acquire restriction information about imaging functions from an imaging device connected to a network, a setting control unit configured to display a setting window in which after a parameter for one imaging function is selected, selectable parameters for other imaging functions are restricted in accordance with the selected parameter on the basis of the restriction information so that the imaging functions to be used are selected, and an information processing unit configured to acquire image information about an image captured using the selected imaging functions via the network.