TV rating data supplementation system

Abstract

The objective is to provide a viewership rating data supplementation system that can achieve viewership rating supplementation without compromising reliability, even when the panel data collected by people meters is limited. [Solution] The viewership rating data supplementation system 100 is a viewership rating data supplementation system that supplements viewership rating data, and comprises a viewership rating data acquisition unit 110, a viewership rating supplementation processing unit 120, a nearby period setting unit 130, and a weighting coefficient determination unit 140.

Description

Technical Field

[0001] The present invention relates to an audience rating data complementing system for complementing audience rating data.

Background Art

[0002] Conventionally, as this type of audience rating data complementing system, as disclosed in Patent Document 1 below, in a system that accesses media through a set-top box (STB) provided by a media provider (such as a cable TV provider or a satellite broadcasting provider), when it is determined that a segment of return path data associated with a first viewing period is valid, the missing tuning data associated with a second viewing period is corrected based on the tuning data included in the segment of return path data associated with the first viewing period. Such a technology is known.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] In such a system, segments of tuning data existing before and after a missing segment are identified, and the missing segment is corrected (for example, the gap is filled) based on a bridging rule.

[0005] However, in a national audience rating survey calculated based on audience measurement data collected by people meters installed in statistically selected panelist households, if the missing segments are corrected casually, there is a risk that the reliability of the audience rating itself will be impaired.

[0006] On the other hand, even in nationwide viewership surveys, if the panel data collected by people meters is small, it may not be representative enough for reliable analysis.

[0007] In light of the above circumstances, the objective is to provide a viewership rating data supplementation system that can achieve viewership rating supplementation without compromising reliability, even when the panel data collected by the people meter is small. [Means for solving the problem]

[0008] The first invention is a viewership rating data supplementation system that supplements viewership rating data, A viewership rating data acquisition unit acquires viewership rating data as a time series, including the minute-by-minute viewership rating of the viewing station, the viewership rating for the program's time slot, and the minute-by-minute viewership rating of competing stations other than the viewing station in question. A viewership rating supplementation processing unit that supplements the minute-by-minute viewership ratings to be supplemented, and Equipped with, The aforementioned viewership rating supplementation processing unit is characterized by supplementing the ratings by weighting the viewership rating of the program time slot corresponding to the minute-by-minute viewership rating to be supplemented, and the minute-by-minute viewership rating of competing stations other than the one being viewed.

[0009] According to the first invention's viewership rating data supplementation system, the minute-by-minute viewership rating, which is used as an indicator of viewership ratings, is supplemented by weighting the minute-by-minute viewership rating to be supplemented using the viewership rating of the corresponding program time slot and the minute-by-minute viewership rating of competing stations other than the one being viewed.

[0010] Even when panel data collected by the People Meter is limited, it is possible to capture potentially existing viewers by focusing on the viewership ratings for the program time slot corresponding to the minute-by-minute viewership rating to be supplemented, as well as the minute-by-minute viewership ratings of competing channels other than the one being watched. By weighting these and using them as indicators, highly reliable viewership data can be obtained.

[0011] Thus, according to the viewership rating data supplementation system of the first invention, even when the panel data collected by the people meter is small, viewership rating supplementation can be achieved without compromising reliability.

[0012] The viewership rating data supplementation system of the second invention is, in the first invention, A proximity period setting unit sets a past proximity period that belongs to the same day of the week and time zone as the time slot corresponding to the minute-by-minute viewership rating to be supplemented. Equipped with, The aforementioned viewership rating supplementation processing unit weights the minute-by-minute viewership rating to be supplemented by the aforementioned neighboring period setting unit, in addition to using the viewership rating of the program time slot corresponding to the minute-by-minute viewership rating to be supplemented and the minute-by-minute viewership rating of competing stations other than the viewing station in question as indicators. difference This method is characterized by supplementing the data by weighting it using the minute-by-minute viewership ratings of the viewing station for the immediate vicinity, the viewership ratings for the program's time slot, and the minute-by-minute viewership ratings of competing stations other than the viewing station in question.

[0013] According to the viewership rating data supplementation system of the second invention, the nearby period setting unit sets a past nearby period belonging to the same day of the week and time zone as the time slot corresponding to the minute-by-minute viewership rating to be supplemented, and supplements the minute-by-minute viewership rating to be supplemented using the viewership rating data of the set nearby period as follows.

[0014] In other words, the minute-by-minute viewership rating to be supplemented is weighted using the viewership rating of the program time slot corresponding to the minute-by-minute viewership rating to be supplemented, and the minute-by-minute viewership rating of competing stations other than the one being viewed, in addition to being set by the nearest period setting unit. difference The data is supplemented by weighting, using the minute-by-minute viewership ratings of the viewing station for the immediate vicinity, the viewership ratings for the program's time slot, and the minute-by-minute viewership ratings of competing stations other than the viewing station in question.

[0015] Even when panel data collected by the People Meter is limited, it is possible to capture potentially existing viewers by focusing on the minute-by-minute viewership ratings for the time slot corresponding to the minute-by-minute viewership rating to be supplemented, as well as the viewership ratings for the program's duration and the minute-by-minute viewership ratings of competing channels other than the one being watched. By weighting these indicators and using them as indicators, more reliable viewership data can be obtained.

[0016] Thus, according to the viewership rating data supplementation system of the second invention, more reliable viewership rating supplementation can be achieved even when the panel data collected by the people meter is small.

[0017] The third invention's viewership rating data supplementation system is, in the second invention, The aforementioned viewership rating supplementation processing unit is characterized by supplementing and calculating the minute-by-minute viewership rating to be supplemented based on the following formula.

[0018] (The aforementioned minute-by-minute viewership to be supplemented × weight coefficient α) + (Viewership of the program segment corresponding to the aforementioned minute-by-minute viewership to be supplemented × weight coefficient β) + (Viewership of rival stations other than the said viewing station × coefficient γ) + (Viewership of the said viewing station in the nearby period × weight coefficient δ) + (Viewership of the program segment in the nearby period × weight coefficient ε) + (Viewership of rival stations other than the said viewing station in the nearby period × weight coefficient ζ) = Supplemented minute-by-minute viewership According to the viewership rating data supplementation system of the fourth invention, in the third invention, The equation is characterized by the fact that α+β+γ+δ+ε+ζ=1 and satisfies the relationship α≧δ>β≧ε>γ≧ζ.

[0019] According to the viewership rating data interpolation systems of the third and fourth inventions, the interpolated minute-by-minute viewership rating can actually be interpolated by calculating the interpolated minute-by-minute viewership rating using a linear combination equation based on weighting coefficients α to ζ, as shown in the above equation.

[0020] Furthermore, by determining the weighting coefficients α to ζ such that the relationship of sum of coefficients = 1 and α≧δ>β≧ε>γ≧ζ is satisfied, more reliable audience rating interpolation that conforms to actual viewing conditions can be achieved. That is, as shown by α, δ>β, ε>γ, ζ, while making the weighting coefficients α and δ for the audience rating at the relevant time point the largest, then setting the weighting coefficients β and ε for the audience rating of the relevant program, followed by the weighting coefficients γ and ζ for the audience rating of the competing station with smaller weights, this enables audience rating interpolation that complements small amounts of panel data while approximating the panel data collected by people meters.

[0021] According to the audience rating data interpolation system of the third invention and the fourth invention, Even when there is a small amount of panel data collected by people meters, highly reliable audience rating interpolation can be actually achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] [Figure 1] 1 is a system configuration diagram showing an outline of the audience rating data interpolation system according to the present embodiment. [Figure 2] 2 is an explanatory diagram showing processing content in the audience rating data interpolation system of Fig. 1.

[0023] As shown in Fig. 1, the audience rating data interpolation system 100 of the present embodiment is an audience rating data interpolation system for interpolating audience rating data, and includes an audience rating data acquisition unit 110, an audience rating interpolation processing unit 120, a neighboring period setting unit 130, and a weighting coefficient determination unit 140.

[0024] The audience rating data acquisition unit 110 acquires audience rating data obtained from a dedicated device for measuring viewing status installed in a plurality of households extracted by sampling (such as people meter systems and online meter systems; hereinafter referred to as people meters, etc.).

[0025] Here, the viewership data acquired by the viewership data acquisition unit 110 includes minute-by-minute viewership ratings for the viewing station, viewership ratings for the program's time slot, and minute-by-minute viewership ratings for competing stations other than the viewing station, and these are time-series data.

[0026] The viewership rating interpolation processing unit 120 interpolates the aforementioned minute-by-minute viewership ratings to be interpolated, as detailed below.

[0027] The viewership rating supplementation processing unit 120 weights the minute-by-minute viewership rating to be supplemented by the viewership rating of the program time slot corresponding to the minute-by-minute viewership rating to be supplemented, and the minute-by-minute viewership rating of competing stations other than the viewing station, in addition to setting by the nearby period setting unit 130. difference The data is supplemented by weighting, using the minute-by-minute viewership ratings of the viewing station for the immediate vicinity, the viewership ratings for the program's time slot, and the minute-by-minute viewership ratings of competing stations other than the viewing station in question.

[0028] In other words, the minute-by-minute viewership rating to be supplemented is calculated by supplementing it as shown in the following formula.

[0029] (The aforementioned minute-by-minute viewership to be supplemented × weight coefficient α) + (Viewership of the program segment corresponding to the aforementioned minute-by-minute viewership to be supplemented × weight coefficient β) + (Viewership of rival stations other than the said viewing station × coefficient γ) + (Viewership of the said viewing station in the nearby period × weight coefficient δ) + (Viewership of the program segment in the nearby period × weight coefficient ε) + (Viewership of rival stations other than the said viewing station in the nearby period × weight coefficient ζ) = Supplemented minute-by-minute viewership Furthermore, α+β+γ+δ+ε+ζ=1, and the relationship α≧δ>β≧ε>γ≧ζ is satisfied.

[0030] The nearby period setting unit 130 sets a past nearby period for the time slot corresponding to the minute-by-minute viewership rating to be supplemented, which will be described in detail later, and which belongs to the same day of the week and time zone as the time slot.

[0031] The weighting coefficient determination unit 140 determines the weighting coefficients α to ζ, as will be described in detail later.

[0032] The above describes the configuration of the viewership rating data supplementation system 100 of this embodiment. In the above configuration, each processing unit 110 to 140 is composed of hardware such as a CPU (Central Processing Unit), ROM (Read Only memory), and RAM (Random Access Memory), respectively, and stores a program that executes various processes described later in memory (not shown), and functions as a arithmetic unit (sequencer) for executing various processes by executing that program.

[0033] Furthermore, some or all of the processing units 110 to 140 may be configured by other servers (external servers), and the viewership rating data supplementation system 100 may be realized through distributed processing.

[0034] Next, with reference to Figure 2, the processing performed by the viewership rating data supplementation system 100 will be explained.

[0035] First, the viewership rating data acquisition unit 110 performs the viewership rating data acquisition process. Here, for example, minute-by-minute viewership ratings for the target station, viewership ratings for each minute of a program, and minute-by-minute viewership ratings for competing stations (other than the target station) are acquired and stored in sync with the same time axis.

[0036] Next, the nearest period setting unit 130 performs the nearest period setting process. Here, for the minutes to be supplemented, the past N weeks (in this embodiment, the past 4 weeks) for the same day of the week and the same time slot are set as the nearest period, and the viewership data for each indicator (minutes per target station, time slots, competing stations) during that period (representative values ​​may be calculated and used as needed) are used as indicators for supplementation.

[0037] The nearest period setting unit 130 may also set past weeks as the nearest period if there are outliers in the nearest period. For example, if there is a WBC broadcast on a rival channel with high viewership ratings exceeding a predetermined threshold, the nearest period may be the remaining four weeks after holding out the two weeks with outliers out of the most recent six weeks.

[0038] Next, the weighting coefficient determination unit 140 performs the weighting coefficient determination process. Here, the weighting coefficients α, β, γ, δ, ε, and ζ for each index are determined. The coefficients have a sum of 1 and satisfy the constraints α≧δ>β≧ε>γ≧ζ.

[0039] In determining the weighting coefficients, for example, during the training period (a period with few missing values), the imputation process described below is performed to fit a non-negative regression (robust loss is acceptable) such that y ≈ αx1 + βx2 + ... + ζx6, and the initial coefficients are determined. At this time, the coefficients are normalized so that the sum is 1, and adjusted to simultaneously satisfy the constraints α≧δ>β≧ε>γ≧ζ and the sum constraint.

[0040] Finally, the viewership rating supplementation processing unit 120 executes the viewership rating supplementation process.

[0041] Here, as shown in Figure 2, the interpolated minute-by-minute viewership rating is calculated and output as follows: y = A (minute-by-minute viewership rating to be interpolated x1 × weight coefficient α) + B (viewership rating of the program segment corresponding to the minute-by-minute viewership rating to be interpolated x2 × weight coefficient β) + C (minute-by-minute viewership rating of other competing stations x3 × coefficient γ) + A' (minute-by-minute viewership rating of the viewing station in the vicinity x4 × weight coefficient δ) + B' (viewership rating of the program segment in the vicinity x5 × weight coefficient ε) + C' (minute-by-minute viewership rating of other competing stations in the vicinity x6 × weight coefficient ζ).

[0042] Here, x1 is the minute-by-minute viewership rating for the target station for the segment being supplemented (this can be an observed or initial estimate), x2 is the viewership rating for the segment of the program, x3 is the minute-by-minute viewership rating for competing stations, and x4~x6 are the viewership ratings corresponding to x1~x3 in the nearby period (or their respective representative values).

[0043] In this way, by calculating the interpolated minute-by-minute viewership rating, even when panel data collected by the People Meter is small, the minute-by-minute viewership rating to be interpolated from the minute-by-minute viewership rating used as an indicator of viewership can be supplemented by focusing on the viewership rating for the corresponding program segment, the minute-by-minute viewership rating of competing channels other than the one being watched, and furthermore, by focusing on the minute-by-minute viewership rating for the immediate vicinity, the viewership rating for the program segment, and the minute-by-minute viewership rating of competing channels other than the one being watched, it is possible to capture potentially existing viewers. By using these as weighted indicators, more reliable viewership data can be obtained.

[0044] Thus, according to the audience rating data supplementation system 100 of this embodiment, more reliable audience rating supplementation can be achieved even when the panel data collected by the people meter is small.

[0045] In this embodiment, the viewership rating data supplementation system 100 is weighted using the viewership rating of the program segment corresponding to the minute-by-minute viewership rating to be supplemented, and the viewership rating of competing channels other than the viewing station, in addition to being set by the nearby period setting step. difference The explanation described a method of calculating the average viewership rating by supplementing it with weighted data using the minute-by-minute viewership rating of the viewing station for the recent viewing period, the viewership rating for the program's time slot, and the minute-by-minute viewership rating of competing stations other than the viewing station in question. However, the method is not limited to this, and a simpler method may be used to calculate the average viewership rating by supplementing it with the minute-by-minute viewership rating to be supplemented by weighting data using the viewership rating for the corresponding program's time slot and the minute-by-minute viewership rating of competing stations other than the viewing station in question.

[0046] Furthermore, in this embodiment, a supplementation target extraction unit may be provided to extract supplementation targets, and the above-mentioned viewership rating supplementation processing may be performed on the extracted supplementation targets.

[0047] In this case, the interpolation target extraction unit will interpolate the portion of the target station's minute-by-minute viewership rating where the standard error exceeds a threshold. The interpolation target extraction unit may also interpolate the missing portion of the target station's minute-by-minute viewership rating. [Explanation of Symbols]

[0048] 100...Viewership rating data completion system, 110...Viewership rating data acquisition unit, 120...Viewership rating completion processing unit, 130...Nearby period setting unit, 140...Weighting coefficient determination unit.

Claims

1. A viewership rating data supplementation system that complements viewership rating data, A viewership rating data acquisition unit acquires viewership rating data as a time series, including the minute-by-minute viewership rating of the viewing station, the viewership rating for the program's time slot, and the minute-by-minute viewership rating of competing stations other than the viewing station in question. A viewership rating supplementation processing unit that supplements the minute-by-minute viewership ratings to be supplemented, and Equipped with, The aforementioned viewership rating supplementation processing unit is characterized by supplementing the viewership rating data by weighting the viewership rating of the time slot of the program corresponding to the minute-by-minute viewership rating to be supplemented, and the minute-by-minute viewership rating of a rival station other than the one being viewed.

2. In the viewership rating data supplementation system according to claim 1, A proximity period setting unit sets a past proximity period that belongs to the same day of the week and time zone as the time slot corresponding to the minute-by-minute viewership rating to be supplemented. Equipped with, The viewership rating supplementation processing unit is characterized by supplementing the minute-by-minute viewership rating to be supplemented by weighting the viewership rating of the program segment corresponding to the minute-by-minute viewership rating to be supplemented, and the minute-by-minute viewership rating of other competing stations, in addition to weighting the minute-by-minute viewership rating of the viewing station for the nearby period set by the nearby period setting unit, the viewership rating of the program segment, and the minute-by-minute viewership rating of other competing stations.

3. In the viewership rating data supplementation system according to claim 2, The aforementioned viewership rating supplementation processing unit is characterized by supplementing and calculating the minute-by-minute viewership rating to be supplemented based on the following formula, and is a viewership rating data supplementation system. (The minute-by-minute viewership rating to be supplemented × weight coefficient α) + (Viewership rating of the program segment corresponding to the minute-by-minute viewership rating to be supplemented × weight coefficient β) + (Viewership rating of other competing stations besides the one in question × coefficient γ) + (Viewership rating of the one in question for the nearby period × weight coefficient δ) + (Viewership rating of the program segment for the nearby period × weight coefficient ε) + (Viewership rating of other competing stations besides the one in question for the nearby period × weight coefficient ζ) = Minute-by-minute viewership rating after supplementation

4. In the viewership rating data supplementation system according to claim 3, A viewership rating data interpolation system characterized by the relationship α + β + γ + δ + ε + ζ = 1 and satisfying the relationship α ≥ δ > β ≥ ε > γ ≥ ζ.

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