WO2022239178A1 - インセンティブ最適化方法、インセンティブ最適化装置、及びプログラム - Google Patents
インセンティブ最適化方法、インセンティブ最適化装置、及びプログラム Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
- G06Q30/0207—Discounts or incentives, e.g. coupons or rebates
- G06Q30/0224—Discounts or incentives, e.g. coupons or rebates based on user history
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
Definitions
- the present invention relates to an incentive optimization method, an incentive optimization device, and a program.
- Non-Patent Document 1 discloses that, for the purpose of forming exercise habits, the provision of incentives (money) according to the amount of exercise promotes the formation of exercise habits.
- the magnitude of the effect of an incentive is thought to differ from individual to individual, even if the amount, number of times, and timing of the incentive are the same.
- the incentive may become less attractive due to the longer period until the incentive is obtained due to the achievement of the goal, and as a result, the effect of the incentive may be reduced.
- Non-Patent Document 1 the method of giving incentives is not optimized for each individual, and the influence of the period until incentives are obtained is not considered. It may not have been utilized.
- An embodiment of the present invention has been made in view of the above points, and aims to optimize the method of giving incentives for each individual, taking into consideration the period until incentives are obtained.
- an incentive optimization method for optimizing a method of giving an incentive to an individual's behavior, wherein the behavior sequence and the incentive for the sequence are optimized.
- a parameter estimation procedure for estimating, for each individual, the parameters of a model having the input and output of the incentive provision method and the degree of achievement of the target behavior, respectively, using the observation data of the provision method, and the parameters estimated by the parameter estimation procedure.
- a computer executes an optimization procedure for calculating a method of giving incentives that maximizes the degree of achievement, using the model in which the parameters are set.
- FIG. 10 is a diagram showing an output example of estimated parameter values; It is a figure which shows the output example of a maximum achievement degree and an optimal incentive.
- an incentive optimization device 10 capable of optimizing the incentive giving method for each individual in consideration of the period until the incentive is obtained will be described.
- the incentive optimization device 10 optimizes the incentive giving method for each individual, taking into consideration the period until the incentive is obtained, according to the following (1) and (2).
- a mathematical model (hereinafter also referred to as "behavioral model") is prepared for each individual, in which the method of giving incentives is input and the degree of achievement of target behavior is output, and incentives are given based on each individual's behavioral model. Optimize the method.
- the method of giving incentives is composed of the number of times incentives are given, the timing of each time, and the magnitude (amount) of incentives.
- time discounting means that, as shown in Fig. 1, the incentive is evaluated low when the incentive is given away in time, and the incentive is evaluated highly when the incentive is given close in time. be.
- FIG. 2 is a diagram showing an example of the hardware configuration of the incentive optimization device 10 according to this embodiment.
- the incentive optimization device 10 is realized by the hardware configuration of a general computer or computer system, and includes an input device 101, a display device 102, an external I/F 103, a communication It has an I/F 104 , a processor 105 and a memory device 106 . Each of these pieces of hardware is communicably connected via a bus 107 .
- the input device 101 is, for example, a keyboard, mouse, touch panel, or the like.
- the display device 102 is, for example, a display. Note that the incentive optimization device 10 may not have at least one of the input device 101 and the display device 102, for example.
- the external I/F 103 is an interface with an external device such as the recording medium 103a.
- the incentive optimization device 10 can perform reading, writing, etc. of the recording medium 103 a via the external I/F 103 .
- Examples of the recording medium 103a include CD (Compact Disc), DVD (Digital Versatile Disk), SD memory card (Secure Digital memory card), USB (Universal Serial Bus) memory card, and the like.
- the communication I/F 104 is an interface for connecting the incentive optimization device 10 to a communication network.
- the processor 105 is, for example, various arithmetic units such as a CPU (Central Processing Unit) and a GPU (Graphics Processing Unit).
- the memory device 106 is, for example, various storage devices such as HDD (Hard Disk Drive), SSD (Solid State Drive), RAM (Random Access Memory), ROM (Read Only Memory), and flash memory.
- the incentive optimization device 10 can implement the incentive optimization processing described later.
- the hardware configuration shown in FIG. 2 is an example, and the incentive optimization device 10 may have multiple processors 105 and may have multiple memory devices 106 .
- FIG. 3 is a diagram showing an example of the functional configuration of the incentive optimization device 10 according to this embodiment.
- the incentive optimization device 10 has a parameter estimation section 201 and an incentive optimization section 202 . These units are implemented by, for example, processing that one or more programs installed in the incentive optimization device 10 cause the processor 105 to execute.
- the parameter estimating unit 201 receives the action history data of each individual as input, estimates the parameters of each individual's action model, and outputs estimated parameter values as the estimation results.
- the incentive optimization unit 202 inputs the estimated parameter values and the optimization conditions, which are the conditions regarding the method of giving incentives. , and outputs the optimum incentive and the degree of achievement at that time (maximum degree of achievement).
- one incentive optimization device 10 has the parameter estimation unit 201 and the incentive optimization unit 202, but this is an example, and for example, the parameter estimation unit 201 and Different devices may each have the incentive optimization unit 202 .
- FIG. 4 is a flowchart showing an example of incentive optimization processing according to this embodiment.
- Steps S101 to S103 are parameter estimation phases for estimating the parameters of the behavioral model
- steps S104 to S106 are incentive optimization phases for obtaining maximum achievement and optimal incentives from the behavioral model for which the estimated parameter values are set. is.
- each individual's action history data is provided to the incentive optimization device 10
- estimated parameter values and optimization conditions are provided to the incentive optimization device 10.
- Step S101 First, the parameter estimation unit 201 inputs action history data of each individual.
- the action history data is observation data relating to the actions of each individual (hereinafter also referred to as a user), the number of incentives for the actions, the time (or the date and time, etc.), and the amount.
- u be an ID or the like that identifies a user
- U be the total number of users
- Tu be the length of the target action period of the user u
- N u be the number of incentives observed for the user u.
- the action history data includes the action sequence ⁇ y t u ⁇ at each observation time of the user u, the incentive provision time sequence ⁇ s n u ⁇ observed by the user u, and the incentive given to the user u and a series of incentive amounts ⁇ m n u ⁇ .
- the observed value ⁇ y t u ⁇ of the behavior is assumed to be a numerical value obtained by quantitatively evaluating the goodness of the target behavior.
- the observed value of behavior may be the number of steps per day or the like.
- examples of the incentive amount include money, points, and the like.
- Step S102 Next, the parameter estimation unit 201 estimates the parameters of each individual's behavior model using the behavior history data input in step S101.
- a behavior model is a mathematical model that inputs the method of giving incentives and outputs the degree of achievement of a target behavior. In this step, the parameters of this behavior model are estimated for each user u.
- m i is the i-th incentive amount
- ⁇ is a parameter
- s i ⁇ 1 , s i , ⁇ ) represents the degree of influence of the i-th given incentive on behavior per unit incentive amount.
- s i ⁇ 1 , s i , ⁇ ) is designed to be a monotonically increasing function with respect to time t. It is also assumed that xt represents an internal state and is converted to observed behavior yt through a function ⁇ ( x ).
- s i ⁇ 1 , s i , ⁇ ) on behavior per unit incentive amount is, for example, a function h(t
- s i ⁇ 1 , s i , ⁇ ) 1/(1+ ⁇ (s i ⁇ t)).
- an evaluation function G ( ⁇ y t ⁇ ) for calculating the degree of achievement of the target action from the series of actions ⁇ y t ⁇ (y 1 , y 2 , . . . , y T ) in a period of length T is Define.
- Achievement level of target behavior G( ⁇ y t ⁇ ) (2)
- a behavior model is defined by the above equations (1) and (2).
- the evaluation function G ( ⁇ y t ⁇ ) is arbitrarily designed according to the target behavior. The further away from the goal, the lower the degree of achievement.
- the parameter estimation unit 201 estimates the parameter ⁇ so as to minimize the difference ⁇ y between the behavior predicted from the behavior model and the behavior history data. However, parameter estimation is performed for each user u.
- parameter estimating section 201 estimates parameter ⁇ u of user u using the following equation (3).
- ⁇ is assumed to be a non-negative value.
- Step S103 Then, the parameter estimator 201 outputs the parameter ⁇ u estimated in step S102 as an estimated parameter value.
- FIG. 5 shows an output example of estimated parameter values.
- the output destination of the estimated parameter values can be arbitrarily set, and examples thereof include the display device 102, the memory device 106, and other devices connected via a communication network.
- Step S104 Subsequently, the incentive optimization unit 202 inputs estimated parameter values and optimization conditions.
- Z u denote an incentive giving method for user u.
- the incentive giving method Z u consists of the number of times N of incentives, the time sequence ⁇ s n ⁇ (s 1 , s 2 , . . . , s N ) of giving incentives, and the amount A sequence ⁇ m n ⁇ (m 1 , m 2 , . . . , m N ). That is, Z u ⁇ (N, ⁇ s n ⁇ , ⁇ m n ⁇ ).
- C Z u be a condition (optimization condition) to be considered for the incentive giving method.
- the optimization condition G Z u is specifically a set of various incentive giving methods for user u. For example, it is a set such as ⁇ Z
- the purpose is to search for the optimum incentive giving method (that is, the giving method that maximizes the effect of the incentive (the degree of achievement of the target behavior)) from among the incentive giving methods that satisfy such a certain condition.
- the optimization condition G Z u is the search space for the incentive provision method for user u. It is to be noted that the incentive designer or the like determines what kind of condition the set of incentive giving methods that satisfies G Z u .
- Step S105 Next, the incentive optimization unit 202 uses the estimated parameter values and the optimization conditions input in step S104 to calculate the optimum incentive provision method Zu . That is, the incentive optimization unit 202 searches for the optimal incentive giving method Z u for the user u using the following equation (4).
- the optimum incentive giving method Z u for the user u may be searched by a known algorithm (for example, a brute-force method).
- Step S106 Then, the incentive optimization unit 202 outputs the maximum achievement level and the optimum incentive obtained in the above step S105.
- optimum number of incentives N 3, optimum incentive giving time (3, 5, 10)
- optimum incentive at each time It shows an example when amounts (2,000 yen, 5,000 yen, and 3,000 yen) are output.
- the output destination of the maximum achievement level and optimal incentive can be arbitrarily set, but examples thereof include the display device 102, the memory device 106, and other devices connected via a communication network.
- the incentive optimization device 10 creates, for each user, a behavior model that also considers the period until the incentive is given, and uses this behavior model to provide an optimal incentive method, that is, Search for an incentive giving method that maximizes the degree of achievement of target behavior for each user.
- an optimal incentive method that is, Search for an incentive giving method that maximizes the degree of achievement of target behavior for each user.
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Abstract
Description
まず、本実施形態に係るインセンティブ最適化装置10のハードウェア構成について、図2を参照しながら説明する。図2は、本実施形態に係るインセンティブ最適化装置10のハードウェア構成の一例を示す図である。
次に、本実施形態に係るインセンティブ最適化装置10の機能構成について、図3を参照しながら説明する。図3は、本実施形態に係るインセンティブ最適化装置10の機能構成の一例を示す図である。
次に、本実施形態に係るインセンティブ最適化処理について、図4を参照しながら説明する。図4は、本実施形態に係るインセンティブ最適化処理の一例を示すフローチャートである。ステップS101~ステップS103は行動モデルのパラメータを推定するためのパラメータ推定フェーズであり、ステップS104~ステップS106は推定パラメータ値を設定した行動モデルにより最大達成度及び最適インセンティブを得るためのインセンティブ最適化フェーズである。なお、パラメータ推定フェーズでは各個人の行動履歴データがインセンティブ最適化装置10に与えられ、インセンティブ最適化フェーズでは推定パラメータ値と最適化条件がインセンティブ最適化装置10に与えられる。
上記の式(1)及び式(2)により行動モデルが定義される。
以上のように、本実施形態に係るインセンティブ最適化装置10は、インセンティブが付与されるまでの期間も考慮した行動モデルをユーザ毎に作成し、この行動モデルを用いて最適なインセンティブ付与方法、すなわち目標行動の達成度を最大化するインセンティブ付与方法をユーザ毎に探索する。これにより、各個人のインセンティブに対する行動原理に基づいて、その個人が目標とする行動を達成するために最も効果的なインセンティブの付与方法を個人毎に特定することができるようになる。
101 入力装置
102 表示装置
103 外部I/F
103a 記録媒体
104 通信I/F
105 プロセッサ
106 メモリ装置
107 バス
201 パラメータ推定部
202 インセンティブ最適化部
Claims (6)
- 個人の行動に対するインセンティブの付与方法を最適化するためのインセンティブ最適化方法であって、
前記行動の系列と前記系列に対するインセンティブの付与方法の観測データを用いて、前記インセンティブの付与方法と目標行動に対する達成度をそれぞれ入力と出力に持つモデルのパラメータを前記個人毎に推定するパラメータ推定手順と、
前記パラメータ推定手順で推定されたパラメータを設定した前記モデルを用いて、前記達成度を最大化するインセンティブの付与方法を算出する最適化手順と、
をコンピュータが実行するインセンティブ最適化方法。 - 前記モデルは、遠い将来に得られるインセンティブを近い将来に得られるインセンティブよりも低く評価する時間割引を考慮して、前記達成度を出力する、請求項1に記載のインセンティブ最適化方法。
- 前記インセンティブの付与方法には、インセンティブ付与の回数と、インセンティブの付与日時と、インセンティブの付与量とが含まれる、請求項1又は2に記載のインセンティブ最適化方法。
- 前記最適化手順は、
前記付与量の合計が一定との条件の下で、前記インセンティブの付与方法を算出する、請求項3に記載のインセンティブ最適化方法。 - 個人の行動に対するインセンティブの付与方法を最適化するためのインセンティブ最適化装置であって、
前記行動の系列と前記系列に対するインセンティブの付与方法の観測データを用いて、前記インセンティブの付与方法と目標行動に対する達成度をそれぞれ入力と出力に持つモデルのパラメータを前記個人毎に推定するパラメータ推定部と、
前記パラメータ推定部で推定されたパラメータを設定した前記モデルを用いて、前記達成度を最大化するインセンティブの付与方法を算出する最適化部と、
を有するインセンティブ最適化装置。 - コンピュータに、請求項1乃至4の何れか一項に記載のインセンティブ最適化方法を実行させるプログラム。
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| PCT/JP2021/018182 WO2022239178A1 (ja) | 2021-05-13 | 2021-05-13 | インセンティブ最適化方法、インセンティブ最適化装置、及びプログラム |
| US18/558,717 US20240242242A1 (en) | 2021-05-13 | 2021-05-13 | Incentive optimization method, incentive optimization apparatus, and program |
| JP2023520676A JP7552889B2 (ja) | 2021-05-13 | 2021-05-13 | インセンティブ最適化方法、インセンティブ最適化装置、及びプログラム |
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| WO2024218971A1 (ja) * | 2023-04-21 | 2024-10-24 | 日本電信電話株式会社 | 情報処理装置、情報処理方法、および情報処理プログラム |
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