JP4989542B2 - Negative case collection device, negative case collection method and system - Google Patents

Description

  The present invention relates to a negative case collection device having a function of collecting information on negative cases that the user is not interested in.

  2. Description of the Related Art In recent years, with the development of information technology, techniques for analyzing various items using machine learning algorithms have been developed. In order to improve the accuracy of this machine learning, it is necessary to collect a lot of case data. For example, a technique for improving the accuracy of machine learning by creating a new correct answer example from existing correct answer data for machine learning has been proposed (see, for example, Patent Document 1).

JP 2004-287776 A

  As a method of collecting case data for machine learning as described above, for example, a user's interest is extracted by a device having a network function, and various other types based on the user's interest from another user or a database on the network. A method of automatically recommending and downloading contents is conceivable. However, there is a problem that the user's interests and preferences are various, and it is very difficult to accurately grasp the feature amount and size. In addition, if the user directly inputs a lot of case data, there is a problem that a heavy burden is imposed on the user.

  For such a problem, a method of grasping the user's preference by an artificial intelligence algorithm such as machine learning can be considered. As a method of collecting data of cases that attract the user's interest (correct cases), for example, a method that uses a recording target, a recording time, or the like can be considered. However, there has not been proposed a method for efficiently acquiring data of a case (negative case) that does not attract the user's interest.

  The present invention has been made in view of the above problems, and an object thereof is to provide a negative case collection device that can efficiently collect information on negative cases that the user is not interested in.

  The negative case collection device of the present invention includes an information recording means having a continuous recording mode capable of continuously recording video information or audio information, an information storage means for storing a series of information recorded in the continuous recording mode, Of the series of information stored in the information storage means based on the trigger detection means for detecting the user's trigger action at the time of information recording in the continuous recording mode, the user is interested. Positive case determination means for determining positive case information, and of the series of information stored in the information storage means, information other than the positive case information is a negative case that the user is not interested in. Negative case determination means for determining as information.

  By this device, information other than the positive case information determined based on the user's trigger action is determined as negative case information among a series of continuously recorded information. This makes it possible to efficiently collect information on negative cases that the user is not interested in.

  Further, in the negative case collection device of the present invention, the negative case determination means includes the information recorded immediately before the positive case information in the series of information stored in the information storage means. It may be determined as the information.

  Thereby, the information immediately before the positive case is determined as the negative case information among the series of information recorded continuously. This makes it possible to efficiently collect information on negative cases immediately before positive cases.

  Further, in the negative case collection device of the present invention, the negative case determination means uses the information recorded immediately after the positive case information among the series of information stored in the information storage means as the negative case. It may be determined as the information.

  Thereby, information immediately after the positive case is determined as negative case information among a series of information continuously recorded. This makes it possible to efficiently collect information on negative cases immediately after positive cases.

  In the negative case collection device of the present invention, the negative case determination means includes partial information extracted intermittently from information other than the positive case information in the series of information stored in the information storage means. The negative case information may be determined.

  Thereby, partial information extracted intermittently from a series of continuously recorded information is determined as negative case information. This makes it possible to efficiently collect sporadic negative case information.

  In the negative case collection device of the present invention, the trigger detection unit can detect a user's continuous trigger operation during information recording in the continuous recording mode, and the negative case determination unit can store the information storage Of the series of information stored in the means, the information on the continuous trigger operation period may not be determined as the negative case information.

  Thereby, the information of the period of continuous trigger operation | movement among the series of information recorded continuously is not determined as negative case information. There is a high possibility that a case that is interesting to the user occurs during the period in which the user performs a continuous trigger operation (information in that period is not appropriate as negative case information). This makes it possible to appropriately collect negative case information.

  The negative case collection device of the present invention further includes target specifying means for specifying a recording target at the time of a past trigger operation in a series of previously recorded information, and the negative case determination means is stored in the information storage means. Of the series of information, the information including the recording target at the past trigger operation may not be determined as the negative case information.

  Thereby, information including a recording target at the time of a past trigger operation is not determined as negative case information among a series of information continuously recorded. The target on which the user has performed a trigger operation in the past is likely to be interesting to the user (the information on the target is not appropriate as negative case information). This makes it possible to appropriately collect negative case information.

  The negative case collection method of the present invention stores a series of information recorded in a continuous recording mode in which video information or audio information can be continuously recorded, and is used for a user trigger operation at the time of information recording in the continuous recording mode. Based on the stored series of information, the information of the positive case that the user is interested in is determined, and among the stored series of information, the user is interested in information other than the positive case information. It is determined as information on negative cases that you do not have.

  By this method, information other than positive case information determined based on a user's trigger action is determined as negative case information among a series of continuously recorded information. This makes it possible to efficiently collect information on negative cases that the user is not interested in.

  The negative case collection system of the present invention includes an information recording means having a continuous recording mode capable of continuously recording video information or audio information, an information storage means for storing a series of information recorded in the continuous recording mode, Of the series of information stored in the information storage means based on the trigger detection means for detecting the user's trigger action at the time of information recording in the continuous recording mode, the user is interested. Positive case determination means for determining positive case information, and of the series of information stored in the information storage means, information other than the positive case information is a negative case that the user is not interested in. Negative case determination means for determining as information.

  Also in this system, information other than positive case information determined based on a user's trigger action is determined as negative case information among a series of continuously recorded information. This makes it possible to efficiently collect information on negative cases that the user is not interested in.

  According to the present invention, by providing negative case determination means capable of determining negative case information from a series of continuously recorded information, negative case information that the user is not interested in can be efficiently used. Can be collected.

  Hereinafter, a negative case collection system according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, for example, a case where a user collects negative cases using a negative case collection device (also simply referred to as a device) for collecting case data for machine learning is illustrated.

  FIG. 1 is an explanatory diagram for explaining an outline of the negative case collection system of the present embodiment. FIG. 1 shows an example in which a user who owns the device 1 photographs various objects (for example, the objects A to D) while moving along a predetermined route.

  The device 1 is in a continuous recording mode when the power is turned on, and video information and audio information can be continuously recorded. That is, it can be said that the device 1 can always record in the real world with the power turned on. The device 1 is provided with a trigger button 2 to be pressed when shooting an object of interest to the user (see FIG. 2).

  When the user moves the route, the device 1 (the device 1 in the continuous recording mode) is pointed at various objects, and the device 1 is pointed at an object that he / she is interested in (the object in the right case) Then, the trigger button 2 is pressed. That is, the trigger button 2 is not pressed when the device 1 is pointed at an object that the user is not interested in (an object in a negative case).

  For example, in FIG. 1, when the user points the device 1 at an object C (positive case object), the user presses the trigger button 2, and the objects A, B, and D (negative case objects) are displayed. When the device 1 is pointed, the trigger button 2 is not pressed. In this way, the user records various events that occur around him using the device 1 for things that are of interest.

  An example of such a device 1 is a digital video camera for recording a life log. The digital video camera can always record video information and audio information with the power turned on, and the user presses the recording button (trigger button 2) when photographing an object of interest. .

  FIG. 2 is a block diagram for explaining the configuration of the device 1 of the present embodiment. As shown in FIG. 2, the device 1 includes an information recording unit 3 that can continuously record video information and audio information, and an information storage unit 4 that stores a series of recorded information. The information recording unit 3 is configured by, for example, a CCD camera or a voice microphone, and the information storage unit 4 is configured by a large capacity memory such as an HDD. If the recorded data exceeds the maximum capacity of the information storage unit 4, the oldest date and time may be overwritten. The device 1 also includes a control unit 5 that performs various controls related to negative case collection. The control unit 5 is constituted by, for example, a CPU or a microcomputer.

  The control unit 5 includes a trigger detection unit 6 that detects pressing (trigger operation) of the trigger button 2, and a positive case determination unit 7 that determines positive case information from a series of information stored in the information storage unit 4. The negative case determination unit 8 that determines negative case information from the series of information stored in the information storage unit 4 is provided. Further, the control unit 5 includes a target specifying unit 9 that specifies a recording target at the time of a past trigger operation from a series of information recorded previously.

  The correct case determination unit 7 uses the time point when the user presses the trigger button 2 (trigger operation) in the series of information stored in the information storage unit 4 as a reference for information on a predetermined period before and after the correct case. It is determined as information. This takes into account the time lag from when a user discovers an interesting event (positive case) in the real world until a specific action (depressing the trigger button 2) occurs.

  The negative case determination unit 8 determines information other than positive case information as negative case information out of a series of information stored in the information storage unit 4. The negative case determination unit 8 of the present embodiment has a function of determining negative case information with various negative case determination patterns, as will be described later.

  For example, in the first negative case determination pattern, information immediately before the positive case among the series of information stored in the information storage unit 4 is determined as negative case information (see FIG. 3). Further, in the second negative case determination pattern, information immediately after the positive case among the series of information stored in the information storage unit 4 is determined as negative case information (see FIG. 4). Further, in the third negative case determination pattern, partial information extracted intermittently from the series of information stored in the information storage unit 4 is determined as negative case information (see FIG. 5).

  Further, in the fourth negative case determination pattern, information of the continuous trigger operation period is not determined as negative case information among the series of information stored in the information storage unit 4 (see FIG. 6). Further, in the fifth negative case determination pattern, information including the recording target at the time of the past trigger operation in the series of information stored in the information storage unit 4 is not determined as negative case information (see FIG. 7). ). The negative case determination pattern of the present invention is not limited to these.

  The trigger detection unit 6 has a function necessary for determining negative case information using the fourth negative case determination pattern. That is, the trigger detection unit 6 has a function of detecting a continuous trigger operation of the user (see FIG. 6).

  The target specifying unit 9 has a function necessary for determining negative case information using the fifth negative case determination pattern. For example, the target specifying unit 9 performs image processing (pattern matching processing or the like) on the video information stored in the information storage unit 4 to determine a shooting target (what object was shot) at the time of the trigger operation. It has a function to do.

  About the negative case collection device 1 comprised as mentioned above, the operation | movement is demonstrated using drawing. Here, with reference to FIG. 3 to FIG. 7, the operation when collecting negative case information by five negative case determination patterns (first to fifth negative case determination patterns) characteristic of the present invention will be described. To do.

(Negative case information collection by the first negative case determination pattern)
FIG. 3 is a diagram illustrating an example of an operation when collecting information on negative cases according to the first negative case determination pattern. In the example of FIG. 3, the user turns on the power of the device 1 at time t1 (turns on the continuous recording mode), and turns off the power of the device 1 at time t2 (turns off the continuous recording mode). During that time (between time t1 and time t2), the user photographs various objects with the device 1, and when the object he / she is interested in is photographed (time t3), the trigger button 2 is pressed (trigger operation). )I do.

  In this case, the positive case determination unit 7 of the device 1 determines a certain period (period from time t4 to time t5) as a positive case with the time t3 of the user's trigger operation as a base point. And the negative case determination part 8 determines the period (period from the time t6 to the time t4) which goes back for a fixed time from immediately before the positive case as a negative case. In this way, information on negative cases immediately before positive cases is collected.

(Collecting negative case information using the second negative case determination pattern)
FIG. 4 is a diagram illustrating an example of an operation when collecting negative case information using the second negative case determination pattern. In the example of FIG. 4, as in the case of FIG. 3, the user turns on the power of the device 1 at time t1 (turns on the continuous recording mode) and turns off the power of the device 1 at time t2 (turns on the continuous recording mode). Off). During that time (between time t1 and time t2), the user photographs various objects with the device 1, and when the object he / she is interested in is photographed (time t3), the trigger button 2 is pressed (trigger operation). )I do.

  Also in this case, the positive case determination unit 7 of the device 1 determines a certain period (period from time t4 to time t5) as a positive case with the time t3 of the user's trigger operation as a base point. In the example of FIG. 4, the negative case determination unit 8 determines a certain period (a period from time t5 to time t7) immediately after the positive case as a negative case. In this way, negative case information immediately after the positive case is collected.

(Collecting negative case information using the third negative case determination pattern)
FIG. 5 is a diagram illustrating an example of an operation when collecting negative case information using the third negative case determination pattern. In the example of FIG. 5, as in the case of FIG. 3, the user turns on the power of the device 1 at time t1 (turns on the continuous recording mode) and turns off the power of the device 1 at time t2 (turns on the continuous recording mode). Off). During that time (between time t1 and time t2), the user photographs various objects with the device 1, and when the object he / she is interested in is photographed (time t3), the trigger button 2 is pressed (trigger operation). )I do.

  Also in this case, the positive case determination unit 7 of the device 1 determines a certain period (period from time t4 to time t5) as a positive case with the time t3 of the user's trigger operation as a base point. In the example of FIG. 5, the period (period Ta, period Tb, period Tc) in which the negative case determination unit 8 is intermittently extracted is determined as a negative case. In this way, information on sporadic negative cases is collected.

(Collecting negative case information using the fourth negative case determination pattern)
FIG. 6 is a diagram illustrating an example of an operation when collecting negative case information according to the fourth negative case determination pattern. In the example of FIG. 6, as in the case of FIG. 3, the user turns on the device 1 at time t1 (turns on the continuous recording mode) and turns off the device 1 at time t2 (turns on the continuous recording mode). Off).

  In the example of FIG. 6, during that time (between time t1 and time t2), the user images various objects with the device 1 and images the objects that he is interested in (time t3 and time t3 ′). ) The trigger button 2 is continuously pressed (trigger operation). In this example, the case of two consecutive trigger operations is illustrated, but the scope of the present invention is not limited to this, and the number of trigger operations may be three or more.

  In this case, the positive case determination unit 7 of the device 1 determines a certain period (period from time t4 to time t5) as a positive case with the time t3 of the user's trigger operation as a base point. Further, the positive case determination unit 7 of the device 1 determines a certain period (a period from time t4 'to time t5') as a positive case with the time t3 'of the user's trigger operation as a base point.

  In the example of FIG. 6, the negative case determination unit 8 does not determine (exclude from the negative case) information on the period of the continuous trigger operation (period from time t4 'to time t5). That is, in this case, a certain period (a period from time t6 ′ to time t4 ′) immediately before one positive case is determined as a negative case, and a certain period (from time t5 ′) immediately before the other positive case. The period until time t4) is not determined as a negative case. When the user's trigger operation is performed a plurality of times in a short period of time, there is a high possibility that a very interesting event has occurred for the user. In such a case, as described above, negative case information is appropriately collected by excluding information that may not be appropriate as negative case information (variing the negative case period).

(Negative case information collection by the fifth negative case determination pattern)
FIG. 7 is a diagram illustrating an example of an operation when collecting negative case information according to the fifth negative case determination pattern. In the example of FIG. 7, as in the case of FIG. 3, the user turns on the power of the device 1 at time t1 (turns on the continuous recording mode) and turns off the power of the device 1 at time t2 (turns on the continuous recording mode). Off). In this case, the user turns on the power of the device 1 at the time t1 ″ past the time t1 (continuous recording mode is turned on), and turns off the power of the device 1 at the time t2 ″ (continuous recording mode is turned off). Yes.

  In the example of FIG. 7, when the user photographs various objects with the device 1 between time t1 and time t2 and photographs the object that he is interested in (time t3), the trigger button 2 is activated. Press (trigger operation). In this case, the user also captures various objects with the device 1 during the past time t1 ″ and time t2 ″, and images the objects that he is interested in (time t3 ″). ), The trigger button 2 is pressed (trigger operation).

  In this example, the positive case determination unit 7 of the device 1 determines a certain period (period from time t4 to time t5) as a positive case with the time t3 of the user's trigger operation as a base point. Then, the negative case determination unit 8 includes information on the period Tx including the recording target at the time of the trigger operation at the time t3 ″ in the period (a period from the time t6 to the time t4) that goes back a certain time immediately before the positive case. Is not determined as a negative case (excluded from a negative case), that is, in this case, a period other than the period Tx is a negative case in a certain period (a period from time t6 to time t4) immediately before the positive case. The object (positive case) that the user has triggered in the past is likely to be very interesting to the user, in which case, as described above, the negative case information By excluding information that may not be appropriate as (variable negative case period), negative case information is collected appropriately.

  According to such a negative case collection device 1 of the present embodiment, by providing the negative case determination unit 8 that can determine negative case information from a series of continuously recorded information, the user can It is possible to efficiently collect information on negative cases that are not interested.

  That is, in the present embodiment, information other than positive case information determined based on a user's trigger action is determined as negative case information among a series of continuously recorded information. This makes it possible to efficiently collect information on negative cases that the user is not interested in.

  For example, in the present embodiment, as shown in FIG. 3, information immediately before the positive case is determined as negative case information among a series of information continuously recorded. This makes it possible to efficiently collect information on negative cases immediately before positive cases.

  Further, in the present embodiment, as shown in FIG. 4, information immediately after the positive case is determined as negative case information among a series of continuously recorded information. This makes it possible to efficiently collect information on negative cases immediately after positive cases.

  In the present embodiment, as shown in FIG. 5, partial information extracted intermittently from a series of continuously recorded information is determined as negative case information. This makes it possible to efficiently collect sporadic negative case information.

  Further, in the present embodiment, as shown in FIG. 6, information of a continuous trigger operation period is not determined as negative case information among a series of continuously recorded information. There is a high possibility that a case that is interesting to the user occurs during the period in which the user performs a continuous trigger operation (information in that period is not appropriate as negative case information). This makes it possible to appropriately collect negative case information.

  Further, in the present embodiment, as shown in FIG. 7, information including a recording target at the past trigger operation is not determined as negative case information among a series of continuously recorded information. The target on which the user has performed a trigger operation in the past is likely to be interesting to the user (the information on the target is not appropriate as negative case information). This makes it possible to appropriately collect negative case information.

  According to the device 1 of the present invention as described above, it is possible to collect positive cases and negative cases in the interests and preferences of an individual, triggered by recording real-world cases as video and audio.

  And according to this device 1, not only the positive example regarding the interest and preference of the user who operates the device 1, but the information of a negative example can be acquired. Moreover, according to this device 1, the information of a negative example can be efficiently acquired by calculation processing.

  In general, processing of negative case information is a heavy burden on the user. However, according to the device 1 of the present invention, the user only needs to perform processing (trigger operation) related to the positive case. User processing is reduced. This reduces the burden on the user when collecting negative case information.

  The embodiments of the present invention have been described above by way of example, but the scope of the present invention is not limited to these embodiments, and can be changed or modified according to the purpose within the scope of the claims. is there.

  In the above example, the example in which the negative case collection processing is performed in the device 1 has been described, but the scope of the present invention is not limited to this. For example, the device 1 has a function to communicate with a server via a network (so-called network function), and the information recorded by the device 1 is transmitted to the server via the network, and negative case collection processing is performed on the server. May be.

  As described above, the negative case collection device according to the present invention has an effect of efficiently collecting information on negative cases that the user is not interested in, such as collecting case data for machine learning, etc. Is useful.

It is explanatory drawing of the negative case collection system in this Embodiment. It is a block diagram of a device (negative case collection device) used in the present embodiment. It is explanatory drawing of the 1st negative case determination pattern. It is explanatory drawing of the 2nd negative case determination pattern. It is explanatory drawing of the 3rd negative case determination pattern. It is explanatory drawing of the 4th negative case determination pattern. It is explanatory drawing of the 5th negative case determination pattern.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Negative case collection device 2 Trigger button 3 Information recording part 4 Information storage part 5 Control part 6 Trigger detection part 7 Positive case determination part 8 Negative case determination part 9 Target specification part

Claims (11)

Information recording means having a continuous recording mode capable of continuously recording video information or audio information;
Information storage means for storing a series of information recorded in the continuous recording mode;
Trigger detection means for detecting a user's trigger operation during information recording in the continuous recording mode;
Based on the user's triggering action, out of the series of information stored in the information storage means, positive case determination means for determining information on positive cases in which the user is interested;
Of the series of information stored in the information storage means, negative case determination means for determining information other than the positive case information as negative case information that the user is not interested in;
Equipped with a,
The negative case determination means determines partial information extracted intermittently from information other than the positive case information as the negative case information from the series of information stored in the information storage means. Characteristic negative case collection device. Information recording means having a continuous recording mode capable of continuously recording video information or audio information;
Information storage means for storing a series of information recorded in the continuous recording mode;
Trigger detection means for detecting a user's trigger operation during information recording in the continuous recording mode;
Based on the user's triggering action, out of the series of information stored in the information storage means, positive case determination means for determining information on positive cases in which the user is interested;
Of the series of information stored in the information storage means, negative case determination means for determining information other than the positive case information as negative case information that the user is not interested in;
With
The trigger detection means can detect a user's continuous trigger operation at the time of information recording in the continuous recording mode,
The negative case determination means, wherein the negative case collection does not determine the information of the continuous trigger operation period among the series of information stored in the information storage means as the negative case information. device. Information recording means having a continuous recording mode capable of continuously recording video information or audio information;
Information storage means for storing a series of information recorded in the continuous recording mode;
Trigger detection means for detecting a user's trigger operation during information recording in the continuous recording mode;
Based on the user's triggering action, out of the series of information stored in the information storage means, positive case determination means for determining information on positive cases in which the user is interested;
Of the series of information stored in the information storage means, negative case determination means for determining information other than the positive case information as negative case information that the user is not interested in;
A target specifying means for specifying a recording target at the time of a past trigger operation in a series of previously recorded information;
With
The negative case determination unit does not determine, as the negative case information, information including a recording target at the time of the past trigger operation among the series of information stored in the information storage unit. Negative case collection device. The negative case determining means determines, as the negative case information, information recorded immediately before the positive case information among the series of information stored in the information storage means. The negative case collection device according to any one of claims 1 to 3. The negative case determining means determines, as the negative case information, information recorded immediately after the positive case information out of the series of information stored in the information storage means. The negative case collection device according to any one of claims 1 to 4. Stores a series of information recorded in continuous recording mode that can record video information or audio information continuously,
Based on the trigger operation of the user at the time of information recording in the continuous recording mode, the information of the positive case that the user is interested in among the series of stored information is determined,
In the negative case collection method for determining information other than the positive case information as the negative case information that the user is not interested in among the series of stored information,
A negative case collection method, wherein partial information extracted intermittently from information other than the positive case information in the series of stored information is determined as the negative case information. Stores a series of information recorded in continuous recording mode that can record video information or audio information continuously,
Based on the trigger operation of the user at the time of information recording in the continuous recording mode, the information of the positive case that the user is interested in among the series of stored information is determined,
In the negative case collection method for determining information other than the positive case information as the negative case information that the user is not interested in among the series of stored information ,
When detecting the trigger operation, it is possible to detect the user's continuous trigger operation at the time of information recording in the continuous recording mode,
A negative case collection method , wherein information of the continuous trigger operation period is not determined as the negative case information among the series of stored information . Stores a series of information recorded in continuous recording mode that can record video information or audio information continuously,
Based on the trigger operation of the user at the time of information recording in the continuous recording mode, the information of the positive case that the user is interested in among the series of stored information is determined,
In the negative case collection method for determining information other than the positive case information as the negative case information that the user is not interested in among the series of stored information,
Identify the recording target at the time of past trigger action in a series of previously recorded information,
A negative case collection method, wherein information including a recording target at the time of the past trigger operation is not determined as the negative case information among the series of stored information. Information recording means having a continuous recording mode capable of continuously recording video information or audio information;
Information storage means for storing a series of information recorded in the continuous recording mode;
Trigger detection means for detecting a user's trigger operation during information recording in the continuous recording mode;
Based on the user's triggering action, out of the series of information stored in the information storage means, positive case determination means for determining information on positive cases in which the user is interested;
Of the series of information stored in the information storage means, negative case determination means for determining information other than the positive case information as negative case information that the user is not interested in;
With
The negative case determination means determines partial information extracted intermittently from information other than the positive case information as the negative case information from the series of information stored in the information storage means. Characteristic negative case collection system. Information recording means having a continuous recording mode capable of continuously recording video information or audio information;
Information storage means for storing a series of information recorded in the continuous recording mode;
Trigger detection means for detecting a user's trigger operation during information recording in the continuous recording mode;
Based on the user's triggering action, out of the series of information stored in the information storage means, positive case determination means for determining information on positive cases in which the user is interested;
Of the series of information stored in the information storage means, negative case determination means for determining information other than the positive case information as negative case information that the user is not interested in;
With
The trigger detection means can detect a user's continuous trigger operation during information recording in the continuous recording mode,
The negative case determination means, wherein the negative case collection does not determine the information of the continuous trigger operation period among the series of information stored in the information storage means as the negative case information. system. Information recording means having a continuous recording mode capable of continuously recording video information or audio information;
Information storage means for storing a series of information recorded in the continuous recording mode;
Trigger detection means for detecting a user's trigger operation during information recording in the continuous recording mode;
Based on the user's triggering action, out of the series of information stored in the information storage means, positive case determination means for determining information on positive cases in which the user is interested;
Of the series of information stored in the information storage means, negative case determination means for determining information other than the positive case information as negative case information that the user is not interested in;
A target specifying means for specifying a recording target at the time of a past trigger operation in a series of previously recorded information;
With
The negative case determination unit does not determine, as the negative case information, information including a recording target at the time of the past trigger operation among the series of information stored in the information storage unit. Negative case collection system.