INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND PROGRAM

To detect a returning passenger further efficiently.SOLUTION: In an information processing system comprising a getting-on/off detection device and an information processing device, the getting-on/off detection device detects getting on or off a train by communication with a ticket, and generates a getting-on/off record including information on a station where the getting-on or getting off has been detected; and the information processing device comprises: an acquisition unit that acquires the getting-on/off record, a record of getting-on record of a ticket from an automatic ticket gate, and a record of getting off; and a determination unit for determining a presence or absence of a returning passenger when the getting-on/off record at a third station not included in a section from a first station related to the getting-on to a second station related to the getting-off is generated for the ticket, according to a difference between a ride time from the first station to the third station and a ride time from the third station to the second station.SELECTED DRAWING: Figure 4A 【課題】折り返し乗車をより効率的に検出すること。【解決手段】情報処理システムにおいて、乗降検知装置、及び情報処理装置を有し、前記乗降検知装置は、乗車券との通信により、列車への乗車または前記列車からの降車を検知し、前記乗車または前記降車を検知した駅の情報を含む乗降記録を生成し、前記情報処理装置は、前記乗降記録と、自動改札機からの前記乗車券の入場の記録、及び出場の記録とを取得する取得部と、前記乗車券について、前記入場に係る第１の駅から、前記出場に係る第２の駅までの区間に含まれない第３の駅における前記乗降記録が生成されている場合、前記第１の駅から前記第３の駅までの乗車時間と、前記第３の駅から前記第２の駅までの乗車時間との差に基づいて、折り返し乗車の有無を判定する判定部と、を有する。【選択図】図４Ａ