JP5219502B2 - Information processing apparatus, information processing method, and program - Google Patents

Description

  The present invention relates to an information processing apparatus, an information processing method, and a program.

In recent years, large-scale information leakage incidents are increasing with the increase in the speed of transmission paths. In addition, the demand for information leakage prevention is increasing due to the establishment of new laws.
Japanese Patent Application Laid-Open No. 2004-228561 discloses a technique that supports designation of a transmission destination by presenting a mail address or a set of mail addresses that are highly likely to be broadcast based on past transmission history of electronic mail. Japanese Patent Application Laid-Open No. 2004-228561 also discloses a technique that realizes prevention of erroneous transmission by prompting confirmation regarding mail transmission for a combination of transmission destination addresses having no transmission record by comparing a transmission destination with a transmission history at the time of transmission.

JP 2007-148786 A

However, with the technique described in Patent Document 1, it is possible to call attention to e-mail transmission to a destination of a combination that has not been transmitted in the past. Regardless, there was a problem that it was not possible to call attention.
Furthermore, even if attention (danger of erroneous transmission) can be urged according to the content of the email stored as the transmission result (history) and the content of the email instructed to be transmitted, the electronic device stored as the history When the mail includes a forwarded electronic mail (forwarded mail), it is difficult to call attention appropriately. That is, in general, even if the forwarded mail has the same destination, the content of the email is often different from that of other emails. There was a risk of mis-transmission. Similarly, when a forwarded mail is transmitted, it is difficult to appropriately call attention if an electronic mail other than the forwarded mail is included as a history.

  The present invention has been made in view of such a problem. Even when a combination with a transmission record is specified as a destination, if there is no transmission record of a mail having a similar subject or body, confirmation of erroneous transmission is urged. For the purpose.

Therefore, the information processing apparatus according to the present invention includes history information including a part of the transmission destination of the email instructed to be transmitted as the transmission destination from the history information of the transmitted electronic mail stored in the storage unit. The history information and the transmission are instructed based on the acquisition means to be acquired, the character data included in the history information of the email acquired by the acquisition means, and the character data of the email instructed to be transmitted. A calculation means for calculating the similarity to the e-mail, a warning means for outputting warning information when the similarity calculated by the calculation means does not satisfy a predetermined condition, and an electronic for which the transmission is instructed based on the e-mail text data, relating the the e-mail determination means for determining whether or not an e-mail for the transfer, the transmission e-mail instructed to transfer by said determining means If it is determined that the email is related to the transfer, the history information of the email related to the transfer is stored in the transfer history information storage area of the storage means. Storage control means for storing e-mail history information in a transmission history information storage area of the storage means, and the acquisition means is an e-mail related to transfer in which the e-mail instructed to be sent by the determination means is If it is determined that there is, the history information stored in the transfer history information storage area of the storage means is acquired, and it is determined that the email instructed to be transmitted by the determination means is not an email related to transfer. In this case, the history information stored in the transmission history information storage area of the storage means is acquired.

Further, the present invention is an information processing method in an information processing apparatus, wherein the acquisition unit of the information processing apparatus is instructed to transmit from history information of transmitted emails stored in a storage unit An acquisition step of acquiring history information including a part of the transmission destination of the email as a transmission destination, and the character data included in the history information of the email acquired by the calculation unit of the information processing apparatus, A calculation step of calculating a similarity between the history information and the e-mail instructed to transmit based on the character data of the e-mail instructed to transmit; When the similarity calculated in the step does not satisfy a predetermined condition, a warning step for outputting warning information and a determination unit of the information processing apparatus are instructed to transmit the information. Based on the e-mail text data, the electronic mail is determining step determines whether the e-mail for the transfer, storage control unit of the information processing apparatus, the transmission by the determination step is instructed electronic When it is determined that the mail is an email related to the transfer, the history information of the email related to the transfer is stored in the transfer history information storage area of the storage means, and is determined not to be an email related to the transfer in the determination step. A storage control step of storing history information of the electronic mail in a transmission history information storage area of the storage means, and in the obtaining step, the electronic mail instructed to be transmitted by the determination step is related to transfer If it is determined that the e-mail has been stored in the transfer history information storage area of said storage means Acquires gravel information, when said electronic mail the transmission is instructed by the determination step is determined not to be an e-mail about the transfer history information stored in the transmission history information storage area of said storage means It is characterized by acquiring.

  The present invention may be a program.

  According to the present invention, even when a combination with a transmission record is designated as a destination, confirmation of erroneous transmission can be promoted if there is no transmission record of a mail with a similar subject or body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
FIG. 1 is a diagram illustrating an example of a hardware configuration of an information processing apparatus (computer) that is an example of an e-mail transmission / reception apparatus described later.
The CPU 201 comprehensively controls each device and controller connected to the system bus 204. The ROM 202 or the external memory 211 stores a BIOS (Basic Input / Output System), an operating system program (hereinafter referred to as OS), various programs related to functions to be described later, and the like. The RAM 203 functions as a main memory, work area, and the like for the CPU 201. The CPU 201 loads a program or the like necessary for execution of processing from the ROM 202 or the external memory 211 to the RAM 203 and executes the program, thereby realizing functions of each device or processing according to a flowchart.

  The input controller 205 controls input from a pointing device such as a keyboard 209 or a mouse (not shown). The video controller 206 controls display on a display device (display device) such as a CRT display (CRT) 210. The display may be a liquid crystal display as well as a CRT. These are used by the user of the information processing apparatus as necessary. The memory controller 207 controls access to the external memory 211 that stores a boot program, browser software, various applications, font data, user files, editing files, various data, and the like. The communication I / F controller 208 is connected to and communicates with an external device via a network, and executes communication control processing on the network. The communication I / F controller 208 can perform, for example, Internet communication using TCP / IP. Note that the CPU 201 enables display on the CRT 210 by executing outline font rasterization processing on a display information area in the RAM 203, for example. In addition, the CPU 201 enables a user instruction with a mouse cursor (not shown) on the CRT 210.

  A program for realizing the present embodiment is recorded in the external memory 211 and is executed by the CPU 201 by being loaded into the RAM 203 as necessary. Furthermore, a definition file and various information tables used by the CPU 201 are stored in the external memory 211, and a detailed description thereof will be described later.

  FIG. 2 is a diagram illustrating an example of the system configuration of the information processing system and the functional configuration of the electronic mail transmission / reception apparatus.

The e-mail transmission / reception apparatus 100 transmits / receives e-mails to / from the mail server 140 via the network 130.
The e-mail creation processing unit 110 creates a body of an e-mail to be transmitted by the e-mail transmitting / receiving apparatus 100 and designates a destination address in accordance with an operation of the sender (user) such as KB209. In the present embodiment, the e-mail creation processing unit 110 can individually specify TO, CC, and BCC as in a general e-mail transmission / reception application (so-called mailer).

The transmission history confirmation unit 120 prevents undesired transmission such as transmission of an e-mail transmitted from the e-mail transmitting / receiving apparatus 100 to an incorrect transmission destination.
The history information 121 is history information of an email transmitted from the email transmitting / receiving apparatus 100 to the mail server 140 via the network 130 and is stored in the external memory 211. As will be described later, the history information of the e-mail that has been transmitted is stored as the transmission history information in the transmission history information storage area of the external memory 211, and the history information of the e-mail that has been transferred to the transfer history information storage area of the external memory 211 Is stored as transfer history information.

The transmission history acquisition processing unit 122 is a history information of a transmitted email having a combination similar to a combination of transmission destination addresses in the email created by the email creation processing unit 110, or a history information of a forwarded email. Is obtained from the external memory 211.
The similarity determination processing unit 123 determines whether or not there has been a similar transmission in the past from the combination of the address of the transmission destination, the subject, and the similarity of the text in the history information acquired by the transmission history acquisition processing unit 122.

The transmission control processing unit 124 controls transmission / reception of electronic mail according to the determination result of the similarity determination processing unit 123.
The transmission history processing unit 125 stores the e-mail transmitted (or transferred) to the mail server 140 via the network 130 by the transmission control processing unit 124 in a predetermined area of the external memory 211.
An electronic mail transmission / reception device 100 is connected to the network 300.
The mail server 400 transmits an electronic mail transmitted from the electronic mail transmitting / receiving apparatus 100 via the network 300 to the outside of the network.

FIG. 3 is a flowchart (part 1) illustrating an example of an erroneous transmission prevention process in the electronic mail transmitting / receiving apparatus. The process shown in FIG. 3 is generally executed when transmission is instructed from the editing state of an electronic mail.
In step S308, the transmission history acquisition processing unit 122 determines whether or not the e-mail is a transfer mail from the character data of the e-mail instructed to be transmitted, that is, the subject or the mail text. If the transmission history acquisition processing unit 122 determines that the e-mail instructed to be transmitted is a transfer mail, the process proceeds to step S309. If the e-mail instructed to be transmitted is not a transfer mail, the process proceeds to step S301. Move processing.
More specifically, the transmission history acquisition processing unit 122 determines whether the e-mail is a transfer mail depending on whether or not the head of the e-mail subject matches a specific character string such as “Fw:”. Determine whether or not.

In step S309, the transmission history acquisition processing unit 122 acquires, from the transfer history information storage area of the external memory 211, transfer history information including a combination of transfer destination addresses that is closest to the combination of transfer destination addresses of the e-mails for which transmission has been instructed.
On the other hand, in step S301, the transmission history acquisition processing unit 122 transmits transmission history information including a combination of transmission destination addresses closest to the combination of transmission destination addresses of the e-mail instructed to be transmitted from the transmission history information storage area of the external memory 211. get. Details of the transmission history information acquisition process will be described with reference to FIG.

In step S302, the similarity determination processing unit 123 determines the degree of similarity between each other based on the transmission history information acquired in step S301 or the transfer history information acquired in step S309 and the email instructed to be transmitted. calculate. Details of the similarity calculation processing will be described with reference to FIG.
In step S303, the transmission control processing unit 124 determines whether or not there is history information that satisfies the similarity degree calculated in step S302 (that is, a similarity degree equal to or higher than a predetermined default value). If there is no history information in which the similarity calculated in step S302 is a similarity greater than or equal to the default value, the transmission control processing unit 124 moves the process to step S304. On the other hand, if there is history information in which the similarity calculated in step S302 is a similarity equal to or higher than a predetermined value, the transmission control processing unit 124 moves the process to step S306.

In step S304, the transmission control processing unit 124 outputs (displays) a screen, which is an example of warning information as shown in FIG. 4 to warn that there is a possibility of erroneous transmission, to the CRT 210, and notifies the sender of erroneous transmission. Prompt for confirmation. FIG. 4 is a diagram illustrating an example of a warning screen.
In step S305, the transmission control processing unit 124 determines whether or not there is an erroneous transmission through an erroneous transmission confirmation operation by the sender via the warning screen or the like. When receiving a confirmation operation indicating that it is not an erroneous transmission, the transmission control processing unit 124 moves the process to step S306. On the other hand, when receiving a confirmation operation indicating erroneous transmission, the transmission control processing unit 124 ends the processing shown in FIG. 3 without transmitting an e-mail.

In step S <b> 306, the transmission control processing unit 124 transmits an e-mail to the mail server 140 via the network 130.
In step S310, the transmission history acquisition processing unit 122 determines whether the electronic mail is a forwarded mail from the character data of the electronic mail instructed to be transmitted, that is, the subject or the mail text. Note that the transmission history acquisition processing unit 122 may hold the determination result in step S308 and determine whether or not the processing target electronic mail is a forward mail according to the determination result. If the transmission history acquisition processing unit 122 determines that the e-mail instructed to be transmitted is a transfer mail, the process proceeds to step S311. If the e-mail instructed to be transmitted is not a transfer mail, the process proceeds to step S307. Move processing.

In step S307, the transmission history processing unit 125 stores the transmission destination (TO, CC, BCC), subject, and the like of the transmitted electronic mail in the transmission history information storage area of the external memory 211 as transmission history information (storage control). Then, the process shown in FIG.
In step S311, the transmission history processing unit 125 stores the transmission destination (TO, CC, BCC), subject, and the like of the transferred electronic mail as transfer history information in the transfer history information storage area of the external memory 211 (storage control). Then, the process shown in FIG.

  In addition,

Next, the transmission history information acquisition process in step S301 will be described with reference to FIG. Note that the transfer history information acquisition processing in step S309 is the same as in FIG. FIG. 5 is a flowchart illustrating an example of acquisition processing of transmission history information.
In step S <b> 401, the transmission history acquisition processing unit 122 empties the result buffer secured on the RAM 203.

In step S <b> 402, the transmission history acquisition processing unit 122 uses, as a transmission destination address, any one (partial) of the transmission destination address of the email instructed to be transmitted from the transmission history information in the transmission history information storage area of the external memory 211. Get the transmission history information including.
In step S403, the transmission history acquisition processing unit 122 starts a process of repeating the transmission history information acquired in step S402.

In step S404, the transmission history acquisition processing unit 122 acquires, as a matching address, an email address included in the transmission destination of the email instructed to be transmitted among the transmission destinations of the transmission history information to be processed.
In step S405, the transmission history acquisition processing unit 122 acquires, as an excessive address, an e-mail address that is not included in the transmission destination of the e-mail that is instructed to be transmitted among the transmission destinations of the transmission history information that is the processing target. .

In step S <b> 406, the transmission history acquisition processing unit 122 selects an e-mail address that is not included in the transmission destination of the transmission history information to be processed, from among the e-mail addresses included in the transmission destination of the e-mail that is instructed to be transmitted. As a missing address.
In step S407, the transmission history acquisition processing unit 122 counts the number of matches and the number of mismatches from the match addresses, excessive addresses, and insufficient addresses acquired in steps S404 to S406 (calculation of mismatch number). The transmission history acquisition processing unit 122 sets the number of matching addresses as the number of matches and sets the sum of the number of excessive addresses and the number of insufficient addresses as the number of mismatches.

  In step S408, the transmission history acquisition processing unit 122 determines whether or not the number of mismatches in the transmission history information to be processed is less than a predetermined threshold (default value) (threshold determination). The transmission history acquisition processing unit 122 moves the process to step S409 if the number of mismatches is less than a predetermined threshold, and moves the process to step S410 if the number of mismatches is equal to or greater than the predetermined threshold.

In step S409, the transmission history acquisition processing unit 122 adds the transmission history information to be processed to the result buffer secured on the RAM 203.
In step S410, when there is unprocessed transmission history information, the transmission history acquisition processing unit 122 returns the process to step S403, and when there is no unprocessed transmission history information, the processing illustrated in FIG.

As a more specific example, transmission history information acquisition processing in the case of transmitting the e-mail in FIG. 7 when the transmission history information is as shown in FIG. 6 will be described. In this example, the default value used for determining the number of mismatches is 2. FIG. 6 is a diagram (part 1) illustrating an example of transmission history information. FIG. 7 is a diagram illustrating an example of an electronic mail.
In step S <b> 401, the transmission history acquisition processing unit 122 empties the result buffer secured on the RAM 203.

In step S402, the transmission history acquisition processing unit 122 converts the transmission history information 601 to 603 in the transmission history area of the external memory 211 to “suzuki.taro@hoge.jp”, which is the transmission destination address of the email instructed to be transmitted. "," Sato.kazuo@hoge.jp "," takahashi.daisuke@hoge.jp, "and" yamada.kenji@hoge.jp "are acquired as transmission history information.
In step S403, the transmission history acquisition processing unit 122 starts processing on the transmission history information 601 acquired in step S402.

In step S404, the transmission history acquisition processing unit 122 acquires “takahashi.daisuke@hoge.jp,” and “yamada.kenji@hoge.jp” from the transmission history information 601 as matching addresses.
In step S405, the transmission history acquisition processing unit 122 tries to acquire from the transmission history information 601 as an excessive address, but does not acquire anything because there is no excessive address.
In step S406, the transmission history acquisition processing unit 122 sends “suzuki.taro@hoge.jp”, “sato.kazuo @” as an insufficient address from the transmission destination of the e-mail instructed to transmit the transmission history information 601. "hoge.jp" is acquired.

In step S407, since the number of matching addresses is 2, the number of excessive addresses is 0, and the number of insufficient addresses is 2, the transmission history acquisition processing unit 122 counts the number of matches as 2 and the number of mismatches as 2.
In step S408, the transmission history acquisition processing unit 122 moves the process to step S410 because the mismatch number of the transmission history information 601 is 2 and the default value is 2.
In step S410, the transmission history acquisition processing unit 122 returns the process to step S403.

In step S403, the transmission history acquisition processing unit 122 starts processing on the transmission history information 602 acquired in step S402.
In step S404, the transmission history acquisition processing unit 122 matches “suzuki.taro@hoge.jp”, “takahashi.daisuke@hoge.jp,”, “yamada.kenji@hoge.jp” from the transmission history information 602. Get as an address.

In step S405, the transmission history acquisition processing unit 122 tries to acquire from the transmission history information 601 as an excessive address, but does not acquire anything because there is no excessive address.
In step S <b> 406, the transmission history acquisition processing unit 122 acquires “sato.kazuo@hoge.jp” as an insufficient address from the transmission destination of the e-mail for which transmission is instructed with respect to the transmission history information 602.
In step S407, since the number of matching addresses is 3, the number of excessive addresses is 0, and the number of insufficient addresses is 1, the transmission history acquisition processing unit 122 counts the number of matches as 3 and the number of mismatches as 1.

In step S408, the transmission history acquisition processing unit 122 moves the processing to step S409 because the mismatch number of the transmission history information 602 is 1 and the default value is 2.
In step S409, the transmission history acquisition processing unit 122 adds the transmission history information 602 to the result buffer secured on the RAM 203.
In step S410, the transmission history acquisition processing unit 122 returns the process to step S403.

In step S403, the transmission history acquisition processing unit 122 starts processing on the transmission history information 603 acquired in step S402.
In step S404, the transmission history acquisition processing unit 122 acquires “takahashi.daisuke@hoge.jp,” and “yamada.kenji@hoge.jp” from the transmission history information 603 as matching addresses.

In step S405, the transmission history acquisition processing unit 122 acquires “maeda.jiro@hoge.jp,” as an excessive address from the transmission history information 603.
In step S <b> 406, the transmission history acquisition processing unit 122 sends “suzuki.taro@hoge.jp”, “sato.kazuo @” as an insufficient address from the transmission destination of the e-mail instructed to transmit the transmission history information 603. "hoge.jp" is acquired.
In step S407, since the number of matching addresses is 2, the number of excessive addresses is 1, and the number of insufficient addresses is 2, the transmission history acquisition processing unit 122 counts the number of matches as 2 and the number of mismatches as 3.

In step S408, the transmission history acquisition processing unit 122 moves the process to step S410 because the mismatch number of the transmission history information 602 is 3 and the default value is 2.
In step S410, the transmission history acquisition processing unit 122 ends the processing shown in FIG. 5 because there is no unprocessed transmission history information.
Then, the transmission history acquisition processing unit 122 obtains transmission history information 602 in a result buffer secured on the RAM 203 as transmission history information having a transmission destination similar to the transmission destination of the electronic mail in FIG.

  In step S408, the transmission history acquisition processing unit 122 may determine whether or not the number of matches is greater than or equal to a predetermined value, instead of determining whether or not the number of mismatches is less than a predetermined value. Further, the transmission history acquisition processing unit 122 may determine whether or not the number of mismatches is less than a predetermined value and whether or not the number of matches is greater than or equal to a predetermined value.

In the present embodiment, TO, CC, and BCC are treated the same, but may be treated differently.
That is, the transmission history acquisition processing unit 122 determines whether or not the email address set in the TO of the email matches the email address set in the TO included in the transmission history information. May be. Similarly, the transmission history acquisition processing unit 122 determines whether or not the mail address set in the CC of the electronic mail matches the mail address set in the CC included in the transmission history information. It may be. Similarly, the transmission history acquisition processing unit 122 determines whether or not the email address set in the BCC of the email matches the email address set in the BCC included in the transmission history information. You may make it do.

In this way, by comparing the mail addresses of TO, CC, or BCC, it is possible to obtain transmission history information that has a similar transmission destination.
More specifically, in the example of this embodiment, the number of matches in the transmission history information 603 is 2 and the number of mismatches is 3. However, when TO, CC, and BCC are distinguished and handled, the match is “ “yamada.kenji@hoge.jp” alone and the number of matches is 1. “Maeda.jiro@hoge.jp” and “(CC:) takahashi.daisuke@hoge.jp” are excessive addresses. "(TO:) takahashi.daisuke@hoge.jp", "suzuki.taro@hoge.jp", "sato.kazuo@hoge.jp" are insufficient addresses, and the total number of mismatches is 5.

  The transmission history processing unit 125 may store the transmission history information including the transmission time in step S307 of FIG. Then, when acquiring transmission history information in step S402 of FIG. 5, the transmission history acquisition processing unit 122 does not acquire transmission history information whose transmission time is older than a predetermined time interval from the current time. May be.

  Further, the transmission history processing unit 125 may exclude transmission history information whose transmission frequency to the same destination is less than a preset number from the processing target for the acquired transmission history information.

Next, the similarity calculation processing in step S302 will be described with reference to FIG. FIG. 8 is a flowchart illustrating an example of similarity calculation processing.
In step S <b> 701, the similarity determination processing unit 123 empties the most similar transmission history information storage area secured on the RAM 203.

In step S702, the similarity determination processing unit 123 divides the subject of the email instructed to be transmitted into a two-character string. The similarity determination processing unit 123 performs the division of the two concatenated character strings of the subject by acquiring a two-character partial character string while shifting one character at a time from the top of the subject character string to be divided. For example, the similarity determination processing unit 123 divides the subject character string “product announcement” into four two-character strings “product”, “product development”, “announcement”, and “front party”.
In step S <b> 703, the similarity determination processing unit 123 obtains the number of two concatenated character strings for the subject of the email instructed to be transmitted divided in step S <b> 702.

In step S704, the similarity determination processing unit 123 starts a process of repeating the transmission history information acquired by the transmission history acquisition processing unit 122 in step S301 of FIG. 3 or the transfer history information acquired in step S309. In the following, for simplification of description, the similarity determination processing unit 123 will be described assuming that the transmission history acquisition processing unit 122 starts a process of repeating the transmission history information acquired in step S301 of FIG.
In step S <b> 705, the similarity determination processing unit 123 sets the number of matches of the two concatenated character strings secured on the RAM 203 to 0.

In step S706, the similarity determination processing unit 123 divides the subject of the transmission history information to be processed into a two-character string.
In step S707, the similarity determination processing unit 123 obtains the number of the two concatenated character strings divided in step S706.
In step S708, the similarity determination processing unit 123 starts a process of repeating the two-character string for the subject of the outgoing mail divided in step S702.

In step S709, the similarity determination processing unit 123 determines whether the same two-character string as the two-character string of the transmission mail to be processed is included in the two-character string of the transmission history information divided in step S706. Determine whether or not. The similarity determination processing unit 123 moves the process to step S710 if it is in the two-character string of the transmission history information, and moves the process to step S711 if it is not in the two-character string of the transmission history information. .
In step S710, the similarity determination processing unit 123 adds the number of appearances of the two-character string in the subject of the transmission mail and the two-character string in the subject of the transmission history information to the number of matches of the two-character string secured on the RAM 203. And the number of occurrences of. However, the similarity determination processing unit 123 does not add again for the two consecutive character strings added once.

In step S711, the similarity determination processing unit 123 returns the process to step S708 when there is an unprocessed two-character string included in the subject of the outgoing mail, and returns the process to step S708. If not, the process proceeds to step S712.
In step S712, the similarity determination processing unit 123 determines the number of matches of the two concatenated character strings secured on the RAM 203, the number of two character concatenated characters for the subject of the outgoing mail acquired in step S702, and the processing target acquired in step S706. Based on the number of two-character concatenated characters for the subject of the transmission history information, the similarity is calculated by the calculation formula of FIG. FIG. 9 is a diagram illustrating an example of a calculation formula used when calculating the similarity.

  In step S713, the similarity determination processing unit 123 determines that the similarity calculated in step S712 is greater than or equal to the similarity of the most similar transmission history information reported in the most similar transmission history information storage area secured on the RAM 203. It is determined whether or not. The similarity determination processing unit 123 moves the process to step S714 when the similarity is equal to or higher than the similarity of the most similar transmission history information, and moves the process to step S715 when the similarity is lower than the similarity of the most similar transmission history information.

In step S <b> 714, the similarity determination processing unit 123 adds the transmission history information to be processed to the most similar transmission history information storage area secured on the RAM 203. When the similarity of the stored most similar transmission history information is smaller than the similarity of the transmission history information to be stored, the most similar transmission history information storage area is emptied and added.
In step S715, if there is unprocessed transmission history information, the similarity determination processing unit 123 returns to step S704 and continues the processing. If there is no unprocessed transmission history information, the similarity determination processing unit 123 ends the processing illustrated in FIG.

As a more specific example, transmission history information acquisition processing in the case of transmitting the e-mail in FIG. 7 when the transmission history information is as shown in FIG. 10 will be described. FIG. 10 is a second diagram illustrating an example of transmission history information.
First, in step S301 in FIG. 3, the transmission history acquisition processing unit 122 obtains transmission history information 901 to 903 on the RAM 203 as transmission history information having the closest destination to the e-mail transmission destination in FIG. 7. Then, the process proceeds to step S701.

In step S <b> 701, the similarity determination processing unit 123 empties the most similar transmission history information storage area secured on the RAM 203.
In step S <b> 702, the similarity determination processing unit 123 divides the subject of the email instructed to be transmitted (“Re: Send New Product Description Material”) into two concatenated character strings, and two concatenated characters as shown in FIG. 11. As columns, {"Re", "e:", ": New", "New quotient", "Product", "Description", "Description", "Meiden", "Material", "Feeding", Get "Send"}. FIG. 11 is a diagram illustrating an example in which a subject is broken down into two concatenated character strings.

In step S <b> 703, the similarity determination processing unit 123 obtains 11 as the number of two concatenated character strings for the subject of the email (“Re: send new product briefing materials”) instructed for transmission divided in step S <b> 702.
In step S <b> 704, the similarity determination processing unit 123 starts processing on the transmission history information 901.

In step S <b> 705, the similarity determination processing unit 123 sets the number of matches of the two concatenated character strings secured on the RAM 203 to 0.
In step S <b> 706, the similarity determination processing unit 123 divides the subject of the transmission history information 901 (“product arrival notification”) into two concatenated character strings and uses {“product”, “article input” as the two concatenated character strings. Get "," arrival "," load "," no "," know "," know "," raise "}.

In step S <b> 707, the similarity determination processing unit 123 obtains 8 as the number of two concatenated character strings for the subject of the transmission history information 901 (“product arrival notification”).
In step S708, the similarity determination processing unit 123 starts a process of repeating the two-character string for the subject of the transmission mail divided in step S702 ("Re: new product briefing material transmission").

In step S709, the similarity determination processing unit 123 does not include the two concatenated character string (“Re”) in the two concatenated character string for the subject of the transmission history information 901 (“product notification”). Move processing to.
The similarity determination processing unit 123 repeats the same processing for the two-character string (“e:”), the two-character string (“: new”), and the two-character string (“new quotient”).
In step S709, the similarity determination processing unit 123 includes the two concatenated character string (“product”) in the two concatenated character string corresponding to the subject of the transmission history information 901 (“product notification”). Move processing to.

In step S <b> 710, the similarity determination processing unit 123 sets the number of matches of the two concatenated character strings secured on the RAM 203 to the appearance number 1 of the two concatenated character strings (“product”) in the subject of the transmission mail and two in the subject of the transmission history information 901. The number of appearances 1 of the concatenated character string (“product”) is added.
Thereafter, the same processing is executed, but the subsequent two-character string is not included in the two-character string for the transmission history information 901 subject (“notice of product arrival”). For this reason, in step S711, the similarity determination processing unit 123 ends the process of repeating the two-character string of the outgoing mail. Then, the coincidence number of the two concatenated character strings secured on the RAM 203 is 2.

In step S <b> 712, the similarity determination processing unit 123 matches the number of matches of the two concatenated character strings secured on the RAM 203 with two concatenations for the subject of the e-mail instructed to be transmitted (“Re: Send New Product Information Session Material”). From the number 11 of character strings and the number 8 of two concatenated character strings with respect to the subject of the transmission history information 901 (“notice of product arrival”), 0.105 (rounded to the fourth decimal place) is obtained as the similarity.
In step S713, the similarity determination processing unit 123 stores the transmission history information 901 in the most similar transmission history information storage area because the most similar transmission history information storage area secured on the RAM 203 is empty.

Thereafter, by the same processing, the similarity determination processing unit 123 obtains a similarity of 0.5 for the subject of the transmission history information 902 (“product briefing session”) as shown in FIG. The transmission history information 902 is stored in the transmission history information storage area. FIG. 12 is a diagram illustrating an example of two consecutive character strings of transmission history information. In FIG. 12, the total number is the denominator of FIG. 9 (the number of transmission mail 2 concatenated character strings) + (the number of transmission history information 2 concatenated character strings).
The similarity determination processing unit 123 performs the same processing, obtains a similarity of 0.842 (rounded to the fourth decimal place) for the subject of the transmission history information 903 (“send new product explanation material”), and step S713. The transmission history information 903 is stored in the most similar transmission history information storage area. In step S715, the similarity determination processing unit 123 ends the process illustrated in FIG.

  In the present embodiment, the similarity determination is performed based on the similarity of the subject. However, the similarity determination processing unit 123 performs the similarity determination based on the similarity of the text (which may include the contents of the attached file). Also good. However, in this case, the transmission history processing unit 125 also registers (or stores) the text of the transmitted electronic mail as transmission history information, for example.

  As described above, according to the present embodiment, as described above, even when a combination with a transmission record (or a combination similar to a transmission record) is specified for an e-mail address, It is possible to prompt confirmation of erroneous transmission.

<Embodiment 2>
In the present embodiment, in steps S702 and S705 of FIG. 8 of the first embodiment, the similarity determination processing unit 123 determines in advance “Re:” or the like before dividing the email subject into two concatenated character strings. An example of processing for excluding specific character strings will be described. In the present embodiment, differences from the above-described embodiment will be mainly described.

  FIG. 13 is a flowchart illustrating an example of a process for excluding a predetermined specific character string and decomposing a character string such as a subject into a two-character string.

In step S <b> 1301, the similarity determination processing unit 123 empties the two concatenated character string storage area secured on the RAM 203.
In step S1302, the similarity determination processing unit 123 sets the beginning of the input character string to be processed as the current position.

In step S1303, the similarity determination processing unit 123 starts a process of repeating the input character string.
In step S <b> 1304, the similarity determination processing unit 123 determines whether a specific character string that matches the character string starting from the current position is in the specific character string storage area on the RAM 203. If there is a matching specific character string, the similarity determination processing unit 123 moves the process to step S1305. If there is no matching specific character string, the similarity determination processing unit 123 moves the process to step S1306. Here, it is assumed that a character string unnecessary for similarity determination, such as “Re:” and “Fw:”, is set and stored in the file or the like as the specific character string in the specific character string storage area.

In step S1305, the similarity determination processing unit 123 advances the current position by the length of the specific character string matched in step S1304, and moves the process to step S1310.
In step S1306, the similarity determination processing unit 123 determines whether or not the current position is the head of the character string. The similarity determination processing unit 123 moves the process to step S1309 if it is the head of the character string, and moves the process to step S1307 if it is not the head of the character string.

In step S1307, the similarity determination processing unit 123 acquires the character at the current position and the character immediately before the current position as a two-character string.
In step S <b> 1308, the similarity determination processing unit 123 adds the two-character string acquired in step S <b> 1307 to the two-character string storage area secured on the RAM 203.

In step S1309, the similarity determination processing unit 123 advances the current position by one character.
In step S1310, if the current position is not the end of the character string, the similarity determination processing unit 123 moves the process to step S1303 and continues the repetition process. On the other hand, if the current position is the end of the character string, the similarity determination processing unit 123 ends the process illustrated in FIG.

  According to the present embodiment, for example, the subject “Re: product briefing materials delivery” and the subject “product briefing materials delivery” have a similarity of 1 and are determined by the same subject and similarity determination processing unit 123. The

<Embodiment 3>
In the present embodiment, an example is shown in which transmission history information that is close to a combination of transmission destinations displays the email addresses of transmission destinations that are excessive or insufficient with respect to transmission history information having similar subject or text. In the present embodiment, differences from the above-described embodiment will be mainly described.

  FIG. 14 is a flowchart (part 2) illustrating an example of an erroneous transmission prevention process in the electronic mail transmission / reception apparatus. In the flowchart of FIG. 14, steps S312 and S313 are newly added compared to the flowchart of FIG.

In step S312, the transmission control processing unit 124 displays a screen including reconfirmation information as illustrated in FIG. 15 on the CRT 210, and prompts the sender to reconfirm the transmission destination. FIG. 15 is a diagram illustrating an example of the reconfirmation screen.
In step S313, the transmission control processing unit 124 determines whether or not to transmit by the sender's reconfirmation operation via the reconfirmation screen or the like. When receiving the operation of transmitting as it is (for example, pressing the OK button on the reconfirmation screen of FIG. 15), the transmission control processing unit 124 moves the process to step S306. On the other hand, when receiving an operation not to transmit (for example, pressing the NO button on the reconfirmation screen in FIG. 15), the transmission control processing unit 124 ends the processing shown in FIG. 14 without transmitting the e-mail.

  According to the present embodiment, among the transmission history information similar to the combination of the destinations of the e-mails that are instructed to be transmitted, the mail addresses that are excessive or insufficient with respect to the transmission history information having a similar subject or text are displayed. can do. Therefore, there is an effect of prompting the sender of the e-mail to reconfirm the destination.

<Embodiment 4>
In the present embodiment, an example is shown in which, when the sender of an e-mail makes an erroneous transmission, information on the erroneously transmitted e-mail is deleted from the transmission history information. In the present embodiment, differences from the above-described embodiment will be described.

FIG. 16 is a flowchart illustrating an example of transmission history information deletion processing in the electronic mail transmitting / receiving apparatus.
In step S1601, when the transmission history processing unit 125 receives a list acquisition request for transmission history information from the sender of the e-mail, for example, via the e-mail creation processing unit 110, the transmission history information storage area of the external memory 211 is stored. The transmission history information is acquired. In this embodiment, for simplification of description, description is made using transmission history information, but the process is the same for transfer history information.

In step S1602, the transmission history processing unit 125 displays a screen including a list of transmission history information as shown in FIG. FIG. 17 is a diagram illustrating an example of a list screen.
In step S1603, the transmission history processing unit 125 determines whether there is a deletion instruction in accordance with the operation of the sender via the list screen. If there is a deletion instruction, the transmission history processing unit 125 proceeds to step S1604. If there is no deletion instruction, the transmission history processing unit 125 ends the process illustrated in FIG.

  In step S1604, the transmission history processing unit 125 deletes the transmission history information selected on the list screen from the transmission history information storage area of the external memory 211.

  According to the present embodiment, since the information of the email that has been erroneously transmitted is deleted from the transmission history information, it is possible to prevent erroneous transmission again.

As described above, according to each of the above-described embodiments, even when a combination with a transmission record is specified as a destination, confirmation of erroneous transmission can be promoted if there is no transmission record of a mail with a similar subject or body.
Further, according to each of the embodiments described above, it is possible to appropriately call attention to an e-mail instructed to be transmitted according to a history that does not include a forwarded mail.
Further, according to each of the above-described embodiments, it is possible to appropriately call attention to a forwarded mail that is instructed to be transmitted according to a history including only forwarded mail.

  In addition, each embodiment mentioned above can be implemented in combination arbitrarily.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.

It is a figure which shows an example of the hardware constitutions of the information processing apparatus (computer) which is examples, such as an electronic mail transmission / reception apparatus mentioned later. It is a figure which shows an example of the system configuration | structure of an information processing system, and the function structure of an electronic mail transmission / reception apparatus. It is a flowchart (the 1) which shows an example of the erroneous transmission prevention process in an electronic mail transmission / reception apparatus. It is a figure which shows an example of a warning screen. It is a flowchart which shows an example of the acquisition process of transmission history information. It is a figure (the 1) which shows an example of transmission history information. It is a figure which shows an example of an email. It is a flowchart which shows an example of a calculation process of similarity. It is a figure which shows an example of the calculation formula at the time of calculating a similarity. It is FIG. (2) which shows an example of transmission history information. It is a figure which shows an example which decomposed | disassembled the subject into the 2 connection character string. It is a figure which shows an example of the 2 continuous character string of transmission log information. It is a flowchart which shows an example of the process which excludes the predetermined specific character string and decomposes | disassembles character strings, such as a subject, into a double connection character string. It is a flowchart (the 2) which shows an example of the erroneous transmission prevention process in an electronic mail transmission / reception apparatus. It is a figure which shows an example of a reconfirmation screen. It is a flowchart which shows an example of the deletion process of the transmission history information in an electronic mail transmission / reception apparatus. It is a figure which shows an example of a transmission log deletion screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 E-mail transmission / reception apparatus 110 E-mail preparation process part 120 Transmission history confirmation part 121 History information 122 Transmission history acquisition process part 123 Similarity determination process part 124 Transmission / reception control process part 125 Transmission history process part 130 Network 140 Mail server

Claims (6)

An acquisition means for acquiring history information including a part of the transmission destination of the e-mail instructed to be transmitted from the history information of the transmitted e-mail stored in the storage means;
Similarity between the history information and the e-mail instructed to transmit based on the character data included in the e-mail history information acquired by the acquisition means and the e-mail character data instructed to transmit A calculating means for calculating the degree;
Warning means for outputting warning information when the similarity calculated by the calculation means does not satisfy a predetermined condition;
Determining means for determining whether or not the e-mail is an e-mail related to forwarding based on the character data of the e-mail instructed to transmit;
When it is determined that the e-mail instructed to be transmitted by the determining means is an e-mail related to transfer, the history information of the e-mail related to the transfer is stored in a transfer history information storage area of the storage means, and the determining means Storage control means for storing the history information of the email in the transmission history information storage area of the storage means,
With
The acquisition unit acquires the history information stored in the transfer history information storage area of the storage unit when the determination unit determines that the e-mail instructed to be transmitted is an e-mail related to transfer. If it is determined that the e-mail instructed to be transmitted by the determining means is not an e-mail related to transfer, the history information stored in the transmission history information storage area of the storage means is acquired. A characteristic information processing apparatus. A mismatch number calculating means for calculating the number of destinations included only in either one of the history information of the email instructed to be sent and the sent email stored in the storage means;
Threshold determination means for determining whether or not the number of transmission destinations calculated by the mismatch number calculation means is less than a predetermined threshold;
Further comprising
The acquisition unit further acquires, from the storage unit, history information determined by the threshold determination unit that the number of transmission destinations calculated by the mismatch number calculation unit is less than a predetermined threshold. The information processing apparatus according to claim 1. The mismatch number calculation means includes a destination set in the TO of the e-mail instructed to be transmitted and a destination set in the TO of the history information of the e-mail already sent stored in the storage means. The information processing apparatus according to claim 2, wherein the number of destinations included in only one of the destinations is calculated . The inconsistency number calculating means includes a destination set in the CC of the e-mail instructed to be transmitted and a destination set in the CC of the history information of the already sent e-mail stored in the storage means. the information processing apparatus according to claim 2 or 3, characterized in that to calculate the number of transmission destination included only in either one. An information processing method in an information processing apparatus,
The acquisition unit of the information processing apparatus acquires history information including, as a transmission destination, a part of the transmission destination of the email instructed to be transmitted from the history information of the transmitted email stored in the storage unit. An acquisition step to
The calculation means of the information processing device, based on the character data included in the history information of the e-mail acquired in the acquisition step and the character data of the e-mail instructed to transmit, the history information and the transmission A calculation step for calculating the degree of similarity with an email instructed to;
A warning step of outputting warning information when the warning means of the information processing apparatus does not satisfy a predetermined condition in the similarity calculated in the calculation step;
A determination step of determining whether or not the e-mail is an e-mail related to transfer based on character data of the e-mail instructed to be transmitted;
When the storage control unit of the information processing apparatus determines that the e-mail instructed to be transmitted by the determining step is an e-mail related to transfer, the history information of the e-mail related to the transfer is transferred to the transfer history of the storage unit. A storage control step of storing in the information storage area and storing the history information of the email in the transmission history information storage area of the storage means when it is determined in the determination step that the email is not related to transfer;
Including
In the obtaining step, when it is judged by the judging step that the e-mail instructed to be transmitted is an e-mail related to forwarding, the history information stored in the forwarding history information storage area of the storage means is obtained. If it is determined in the determination step that the e-mail instructed to be transmitted is not an e-mail related to transfer, the history information stored in the transmission history information storage area of the storage means is acquired. A characteristic information processing method. Computer
An acquisition means for acquiring history information including a part of the transmission destination of the e-mail instructed to be transmitted from the history information of the transmitted e-mail stored in the storage means;
Similarity between the history information and the e-mail instructed to transmit based on the character data included in the e-mail history information acquired by the acquisition means and the e-mail character data instructed to transmit A calculating means for calculating the degree;
Warning means for outputting warning information when the similarity calculated by the calculation means does not satisfy a predetermined condition;
Determining means for determining whether or not the e-mail is an e-mail related to forwarding based on the character data of the e-mail instructed to transmit;
When it is determined that the e-mail instructed to be transmitted by the determining means is an e-mail related to transfer, the history information of the e-mail related to the transfer is stored in a transfer history information storage area of the storage means, and the determining means Storage control means for storing the history information of the email in the transmission history information storage area of the storage means,
To function,
The acquisition unit acquires the history information stored in the transfer history information storage area of the storage unit when the determination unit determines that the e-mail instructed to be transmitted is an e-mail related to transfer. If it is determined that the e-mail instructed to be transmitted by the determining means is not an e-mail related to transfer, the history information stored in the transmission history information storage area of the storage means is acquired. A featured program.

Images