The information processing apparatus, information processing method, an information system and program

A on which can suppress an increase in the transmitting side, or the receiving-side load, improve the accuracy or quality of data reliability and the like of the time series data processed at the receiving side. The sending of the information processing apparatus includes an acquisition unit for acquiring time series data from the monitoring target, by changing the way of determination of the presence or absence of a change in the time-series data obtained in accordance with the state of the monitored, It includes an extraction unit for extracting data when the changed from time-series data, a transmission unit for transmitting the extracted data to the receiving side. The information processing apparatus on the receiving side, a receiver for receiving time-series data of plural sets of attributes obtained from the monitoring target, data not received the time-series data of any attribute in the time-series data of plural sets when there was provided a reception data processing unit for setting a known data before the date source for the detection time of the data not yet received as data values ​​not received, the. .FIELD 1