JP2020024505A - Document processing device and document processing program - Google Patents

Abstract

To provide a document processing device and a document processing program which suitably process a document including a confidential term.SOLUTION: A document processing device (MFP10) comprises a control circuit which operates as a confidential term extraction module which extracts a confidential term included in an original sentence included in an original document and an editing module which generates an alternative document including an alternative sentence having the same sentence structure as the original sentence has by replacing the extracted confidential term with an alternative term meaning the confidential term.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a document processing apparatus and a document processing program for processing a document including a confidential term.

  Document processing devices that process documents containing confidential terms are known (Patent Documents 1 to 3).

JP 2013-219538 A U.S. Patent Application Publication No. 2010/0229246 US Patent Application Publication No. 2011/0107205

  It is desirable to properly handle documents containing confidential terms.

A document processing device according to an embodiment of the present invention includes:
A confidential term extraction module for extracting confidential terms included in the original sentence included in the original document,
A control circuit that operates as an editing module that generates an alternative document including an alternative sentence having the same syntax as the syntax of the original sentence by replacing the extracted confidential term with an alternative term meaning the confidential term.

  According to the present embodiment, the alternative sentence included in the alternative document has the same syntax as the syntax of the original sentence. For this reason, the alternative sentence allows the user to semantically understand what is written as a sentence while hiding the secret term. For this reason, even for a user with a low security permission level, there is no possibility that the user cannot understand at all what was written in the original document due to the large amount of blackening and blurring. Furthermore, it is more difficult for the reader (user) of the substitute document to determine which term is the substitute term (in other words, where the confidential term is described) than the blackened or blurred one. For this reason, by replacing the confidential term with the alternative term, confidentiality can be improved as compared with editing in which the confidential term is painted or blurred.

  The editing module generates a plurality of different alternative documents according to a plurality of security permission levels.

  Thus, a plurality of different alternative documents can be generated from one original document.

The control circuit further includes:
From the extracted security terms according to the plurality of security permission levels, operate as a security permission level determination module that determines a security term to be replaced with the alternative term,
The editing module replaces the different confidential terms with the alternative terms according to the plurality of security permission levels to generate the plurality of different alternative documents different according to the plurality of security permission levels.

  Thus, an appropriate confidential term can be determined as a confidential term to be replaced with an alternative term according to the security permission level.

The control circuit further includes:
It operates as a user level determination module that determines a security permission level according to a user who outputs the plurality of different alternative documents.

  This makes it possible to output an appropriate substitute document for each user from a plurality of different substitute documents.

  The editing module generates the substitute document in which the original sentence is deleted when there is no substitute term that can replace the confidential term and the substitute sentence having the same syntax cannot be generated.

  By deleting the entire original sentence in this way, there is no possibility that the user cannot semantically understand what is written as a sentence because the syntax does not hold down while confidential terms are hidden. . In addition, for the reader (user) of the substitute document, deleting the entire sentence of the original sentence makes it possible to determine which term is the substitute term compared to blackening or blurring (in other words, where the confidential term is described) Is difficult to determine. For this reason, by deleting the entire original sentence, the confidentiality can be improved as compared with the editing in which the confidential terms are blackened or blurred.

A document processing program according to an embodiment of the present invention includes:
The control circuit of the document processing device
A confidential term extraction module for extracting confidential terms included in the original sentence included in the original document,
By replacing the extracted confidential term with a substitute term meaning the confidential term, the system is operated as an editing module that generates a substitute document including a substitute sentence having the same syntax as the syntax of the original sentence.

  According to the present invention, a document including a confidential term can be appropriately processed.

  Note that the effects described here are not necessarily limited, and may be any of the effects described in the present invention.

1 shows a hardware configuration of a document processing apparatus according to an embodiment of the present invention. 2 shows a functional configuration of the document processing apparatus. 4 shows an operation flow of the document processing device. 3 shows a configuration example of a confidential term dictionary. 4 shows a configuration example of a security permission level table. 3 shows a configuration example of a user level table.

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

  1. Hardware configuration of document processing device

  FIG. 1 shows a hardware configuration of a document processing apparatus according to an embodiment of the present invention.

  In the present embodiment, the document processing apparatus 10 is an image forming apparatus (Multifunction Peripheral, MFP), and is hereinafter referred to as the MFP 10. However, the document processing device is not limited to the image forming device. The document processing device may be an information processing device that operates as a server of cloud computing. Alternatively, the document processing device may be a personal computer, a tablet computer, a smartphone, or the like.

  The MFP 10 includes a control circuit 11. The control circuit 11 includes a CPU 11a (Central Processing Unit) as a processor, a RAM 11b (Random Access Memory), a ROM 11c (Read Only Memory) as a memory, a dedicated hardware circuit, and the like, and controls the overall operation of the MFP 10. Govern. The CPU 11a loads the information processing program stored in the ROM 11c into the RAM 11b and executes it. The ROM 11c stores programs and data executed by the CPU 11a in a fixed manner. The ROM 11c is an example of a non-transitory computer-readable recording medium.

  The control circuit 11 is connected to an image reading unit 12, an image processing unit 14, an image memory 15, an image forming unit 16, an operation unit 17 including a display unit 17a, a storage device 18, a facsimile communication unit 19, a network communication interface 13, and the like. ing. The control circuit 11 controls the operation of each of the above-described units connected thereto, and transmits / receives signals or data to / from each unit.

  2. Functional configuration of document processing device

  FIG. 2 shows a functional configuration of the document processing apparatus.

  In the control circuit 11 of the MFP 10, the CPU 11a loads the information processing program stored in the ROM 11c into the RAM 11b and executes the information processing program, whereby the security term extraction module 101, the security permission level determination module 102, the editing module 103, the user level determination module 104 And operates as the output module 105.

  The confidential term extraction module 101 extracts a confidential term included in the original sentence included in the original document.

  The security permission level determination module 102 determines a security term to be replaced with an alternative term from the extracted security terms according to a plurality of security permission levels.

  The editing module 103 generates an alternative document including an alternative sentence having the same syntax as that of the original sentence by replacing the extracted confidential term with an alternative term meaning the confidential term. The editing module 103 generates a plurality of different alternative documents according to the plurality of security permission levels.

  The user level determination module 104 determines a security permission level according to a user who outputs a plurality of different alternative documents.

  The output module 105 outputs a substitute document corresponding to the security permission level determined by the user level determination module 104 to the user (such as printing or sending an e-mail).

  3. Operation flow of document processing device

  FIG. 3 shows an operation flow of the document processing apparatus.

  As a premise, the MFP 10 has already acquired the original document. The original document may be data obtained by converting scan data obtained by scanning a document into text data by optical character recognition (OCR). Alternatively, the original document may be text data received from an external information processing device (a personal computer, a tablet computer, a smartphone, or the like; not shown). The original document typically includes a plurality of sentences (original sentences).

  The confidential term extraction module 101 refers to the confidential term dictionary 110 and extracts a confidential term included in the original sentence included in the original document (step S101). In this embodiment, "term" means at least a word or phrase.

  FIG. 4 shows a configuration example of the confidential term dictionary.

  The confidential term dictionary 110 stores a type 111, a confidential term 112, a synonymous confidential term 113, and an alternative term 114 in association with each other. The confidential term 112 is a confidential term. Specific examples of the confidential terms 112 include proper nouns such as project names (code names) and personal names, and numerical values with currency symbols related to budgets and stocks. The synonymous secret term 113 is a term synonymous with the secret term 112. For this reason, the synonymous confidential term 113 is conceptually included in the confidential term 112 or can be said to be a type of the confidential term 112. Thus, as used herein, “secure terms” (unsigned) include both secure terms 112 and synonymous secure terms 113. The type 111 is a type of the secret term 112 and the synonymous secret term 113. The substitute term 114 is a term meaning the secret term 112 and the synonym secret term 113, and is typically broader, general, and general (in other words, not a proper noun) than the secret term 112 and the synonym secret term 113. ) Term.

  For example, the type 111 “project name” and the alternative term 114 “investigation project” are associated with the proper noun “project M” of the project name, which is the secret term 112. The type 111 “investor information”, the synonymous confidential term 113 “Mr. Abe”, and the alternative term 114 “investor” are associated with the personal name “Abe” as the confidential term 112. The classification 111 “stock” and “budget information” are associated with the numerical value “[$, \] + [0-9]” with the currency symbol, which is the confidential term 112, but the alternative term 114 is not associated.

  Specifically, the confidential term extraction module 101 extracts a confidential term 112 and a synonymous confidential term 113 recorded in the confidential term dictionary 110 from the original sentence included in the original document (step S101).

  Next, the security permission level determination module 102 refers to the security permission level table 120, and according to a plurality of security permission levels, the confidential term extraction module 101 extracts the confidential terms 112 extracted from the original sentence included in the original document and the synonymous terms. Among the confidential terms 113, a confidential term 112 and a synonymous confidential term 113 to be replaced with the substitute term 114 are determined (step S102).

  FIG. 5 shows a configuration example of the security permission level table.

  The security permission level table 120 stores the security permission level 121 and the type 122 in association with each other. The higher the security permission level 121, the more output of confidential information is permitted. On the other hand, the lower the security permission level 121 is, the smaller the output of the confidential information is allowed (in other words, the more confidential information is hidden). The type 122 indicates the type of the confidential term to be replaced with the alternative term according to the security permission level 121. The type 122 is one of the types 111 stored in the confidential term dictionary 110.

  For example, the type 122 is not associated with the security permission level 121 “high”. This means that in the case of the security permission level 121 “high”, there is no confidential term type to be replaced with the alternative term (in other words, all confidential terms are not replaced). The type 122 “investor information”, “stock”, and “project name” are associated with the security permission level 121 “medium”. This means that when the security permission level 121 is “medium”, the confidential terms associated with the type 122 (type 111 of the confidential term dictionary 110) “investor information”, “stock” and “project name” are replaced with alternative terms. Means to do. The type 122 “investor information”, “stock”, and “budget information” are associated with the security permission level 121 “low”. This is because when the security permission level 121 is “low”, the confidential terms associated with the type 122 (type 111 of the confidential term dictionary 110) “investor information”, “stock” and “budget information” are replaced with alternative terms. Means to do.

  More specifically, the security permission level determination module 102 refers to the security permission level table 120, and extracts the security permission level 121 “high” from the confidential terms extracted from the original sentence included in the original document by the confidential term extraction module 101. In this case, the confidential term of the type 122 to be replaced with the substitute term (in this example, none), the confidential term of the type 122 to be replaced with the substitute term when the security permission level 121 is “medium”, and the security permission level 121 “ In the case of "low", it is determined that the confidential term of the type 122 is to be replaced with the substitute term (step S102).

  Next, the editing module 103 replaces the secret term 112 and the synonymous secret term 113 extracted by the secret term extraction module 101 with the alternative term 114, thereby generating an alternative document 130 including an alternative sentence having the same syntax as that of the original sentence. It is generated and stored in the storage device 18 (step S103). The editing module 103 generates a plurality (three in this example) of different alternative documents 130 that differ according to a plurality of security permission levels (in this example, three levels of “high”, “medium”, and “low”). Generate. Specifically, the editing module 103 generates a plurality of different alternative documents 130 different according to the plurality of security permission levels by replacing different confidential terms with the alternative terms according to the plurality of security permission levels. When there is no alternative term that can replace a confidential term and an alternative sentence having the same syntax cannot be generated, the editing module 103 generates an alternative document 130 in which the original sentence is deleted. An alternative document including an alternative sentence generated by the editing module 103 will be described later with a specific example.

  Next, the user level determination module 104 refers to the user level table 140 and determines a security permission level according to a user who outputs a plurality of different alternative documents 130 (step S104). The “user to whom the alternative document 130 is output” uses, for example, a user (single) who logs in to the MFP 10 to print the alternative document 130, or a device to which the alternative document 130 is transmitted by e-mail. Means the user (s). The “user to whom the alternative document 130 is output” is determined at an arbitrary timing.

  FIG. 6 shows a configuration example of the user level table.

  The user level table 140 stores the user identifier 141 and the security permission level 142 in association with each other. The user identifier 141 identifies the user individually or the position of the user. The security permission level 142 is one of the security permission levels 121 stored in the security permission level table 120.

  For example, the security permission level 142 “High” is associated with the user identifier 141 “President” and “Vice President”. The security permission level 142 “medium” is associated with the user identifier 141 “manager A”. A security permission level 142 “low” is associated with the user identifier 141 “employee A” and “employee B”.

  Specifically, the user level determination module 104 refers to the user level table 140 and determines the security permission level 142 associated with the user identifier 141 that identifies the user who outputs the plurality of different alternative documents 130. (Step S104).

  The output module 105 reads the alternative document 130 corresponding to the security permission level 142 determined by the user level determination module 104 from the storage device 18 and outputs the alternative document 130 to a user to whom the alternative document 130 is to be output (print or e-mail transmission). Etc.) (step S105).

  4. Concrete example

  The original document according to the example is, "Abe has purchased a large amount of our shares. Ave currently owns a total of ¥ 327,000,000. A large number of employees have left our project M." The original documents are the original sentence "Abe has purchased a large amount of our shares.", "The current shares owned by Abe amount to \ 327,000,000." And "Many employees have left our project M. ."including.

  Explain the original sentence "Abe has purchased a large amount of our stock." The confidential term extraction module 101 extracts the synonymous confidential term 113 “Mr. Abe” stored in the confidential term dictionary 110 in association with the confidential term 112 “Mr. Abe” from the original sentence. The type 111 “investor information” stored in association with Mr. Abe is determined. The security permission level determination module 102 stores the security permission levels 121 “medium” and “low” in the security permission level table 120 in association with the type 122 “investor information”. Judge that it is not stored. For the security permission levels 121 “medium” and “low”, the editing module 103 adds the synonymous confidential term 113 “Mr. Abe” included in the original sentence “Mr. By substituting the alternative term 114 “Investor” stored in the confidential term dictionary 110 in association with it, an alternative sentence “Investor has purchased our stock in large quantities” having the same syntax as the original sentence is generated. On the other hand, the editing module 103 does not change (do not substitute) the original sentence “Mr. Abe purchased a large amount of our company stock” for the security permission level 121 “high”.

  Explains the original sentence "Abe currently owns a total of \ 327,000,000." The confidential term extraction module 101 extracts the synonymous confidential term 113 “Mr. Abe” stored in the confidential term dictionary 110 in association with the confidential term 112 “Mr. Abe” from the original sentence. The type 111 “investor information” stored in association with Mr. Abe is determined. The security permission level determination module 102 stores the security permission levels 121 “medium” and “low” in the security permission level table 120 in association with the type 122 “investor information”, and does not store “high”. Judge that. On the other hand, the confidential term extraction module 101 extracts from the original sentence “\ 327,000,000” meaning the confidential term 112 “[$, \] + [0-9]” in the confidential term dictionary 110, and The type 111 “stock” and “budget information” stored in association with the term 112 “[$, \] + [0-9]” are determined. The security permission level determination module 102 stores the security permission level 121 “low” in association with the type 122 “stock” and “budget information” in the security permission level table 120, and associates the security 122 with the type 122 “stock”. It is determined that the permission level 121 “medium” is stored, and the security permission level 121 “high” is not stored in association with the type 122 “stock” and “budget information”. The editing module 103 determines that for the security permission levels 121 "medium" and "low", the confidential term 112 "[$, \]" included in the original sentence "Ave currently owns a total of \ 327,000,000." Since the alternative term 114 capable of replacing "\ 327,000,000" meaning "+ [0-9]" is not stored in the confidential term dictionary 110 and an alternative sentence having the same syntax cannot be generated, the entire original sentence is deleted. On the other hand, for the security permission level 121 “high”, the editing module 103 does not change the original sentence “the total number of shares currently owned by Mr. Abe reaches \ 327,000,000” (no substitution).

  Explain the original sentence "Many employees have left our project M." The secret term extraction module 101 extracts the secret term 112 “project M” from the original sentence in the secret term dictionary 110 and stores the type 111 “project name” stored in the secret term dictionary 110 in association with the secret term 112 “project M”. Judge. The security permission level determination module 102 stores the security permission level 121 “medium” in the security permission level table 120 in association with the type 122 “project name”, and stores the security permission levels 121 “high” and “low”. Determine that it is not. For the security permission level 121 "medium", the editing module 103 associates the confidential term 112 "project M" included in the original sentence "many employees have left our project M." By substituting the alternative term 114 "Research Project" stored in the term dictionary 110, an alternative sentence "Several employees have left the company due to our research project" with the same syntax as the original sentence is generated. On the other hand, the editing module 103 does not change (do not substitute) the original sentence “many employees have left the job due to our project M” for the security permission levels 121 “high” and “low”.

  The edit module 103 combines the alternative sentence generated above, the original sentence or the deletion of the original sentence for the security permission levels “high”, “medium” and “low”, respectively, so that the alternative document of each level is obtained. Generate. Specifically, the editing module 103 did not generate a substitute document for the security permission level “high”, and Mr. Original Document Abe purchased a large amount of our stock. Abe currently owns a total of \ 327,000,000. A number of employees have left due to our Project M. And do not change (do not substitute). The editing module 103 generates an alternative document “Investor has purchased a large amount of our stock. A large number of employees have left the company due to our research project” for a security permission level of “Medium”. For the security permission level "low", the editing module 103 generates an alternative document "Investor has purchased a large amount of our stock. A large number of employees have left our project M." "Abe's current shareholding totals \ 327,000,000." Has been removed from the alternative documents with medium and low security permissions.

  5. Modified example

  In the present embodiment, the editing module 103 generates a plurality of different alternative documents 130 that differ according to a plurality of security permission levels, and stores the generated alternative documents 130 in the storage device 18 (step S103). Next, the user level determination module 104 determines the security permission level 142 of the user who outputs the substitute document (step S104). Next, the output module 105 reads the alternative document corresponding to the determined security permission level 142 from the storage device 18 and outputs (prints or sends an e-mail, etc.) to the user to whom the alternative document is to be output (step). S105). Alternatively, the following configuration may be used (not shown).

  The user level determination module 104 determines the security permission level 142 of the user who outputs the substitute document (corresponding to step S104). Next, the editing module 103 generates a substitute document corresponding to the determined security permission level 142 (corresponding to step S103). Next, the output module 105 outputs the generated substitute document to the user (eg, prints or sends an e-mail) (corresponding to step S105). In the case of the present modification, when the security permission level 142 of the user who outputs the substitute document is one level (for example, when there is a single user), the number of substitute documents to be generated is also one.

  6. Conclusion

  In organizations and businesses, protecting confidential information is important. Typically, a user with a higher security permission level has access to all sensitive information. On the other hand, a user with a low security permission level cannot access all confidential information. When creating a document to be output to a user with a low security permission level, typically, the original document including the confidential terms is manually edited (for example, blackened or blurred). Manual editing takes time and effort, and may cause mistakes such as omission of editing (for example, blackening or not entering a term that should be blurred). Also, if the amount of blackening or blurring is large, it may be impossible to understand at all what was written in the original document.

  On the other hand, according to the present embodiment, the confidential term extraction module 101 extracts the confidential terms included in the original sentence included in the original document. The editing module 103 generates an alternative document including an alternative sentence having the same syntax as that of the original sentence by replacing the extracted confidential term with an alternative term meaning the confidential term.

  According to the present embodiment, the alternative sentence included in the alternative document has the same syntax as the syntax of the original sentence. For this reason, the alternative sentence allows the user to semantically understand what is written as a sentence while hiding the secret term. For this reason, even for a user with a low security permission level, there is no possibility that the user cannot understand at all what was written in the original document due to the large amount of blackening and blurring. Furthermore, it is more difficult for the reader (user) of the substitute document to determine which term is the substitute term (in other words, where the confidential term was described) than in the case of blackening or blurring. For this reason, by replacing the confidential term with the alternative term, confidentiality can be improved as compared with editing in which the confidential term is painted or blurred.

  According to the present embodiment, the editing module 103 generates a plurality of different alternative documents according to a plurality of security permission levels.

  Thus, a plurality of different alternative documents can be generated from one original document.

  According to the present embodiment, the security permission level determination module 102 determines a confidential term to be replaced with an alternative term from the extracted confidential terms according to a plurality of security permission levels. The editing module 103 generates a plurality of different alternative documents according to the plurality of security permission levels by replacing the different confidential terms with the alternative terms according to the plurality of security permission levels.

  Thus, an appropriate confidential term can be determined as a confidential term to be replaced with an alternative term according to the security permission level.

  According to the present embodiment, the user level determination module 104 determines a security permission level according to a user who outputs a plurality of different alternative documents.

  This makes it possible to output an appropriate substitute document for each user from a plurality of different substitute documents.

  When there is no alternative term that can replace the confidential term and an alternative sentence having the same syntax cannot be generated, the editing module 103 generates an alternative document from which the original sentence has been deleted.

  By deleting the entire original sentence in this way, it is possible that the user will not be able to semantically understand what is written as a sentence because the syntax does not hold while the secret term is hidden. . In addition, for the reader (user) of the substitute document, deleting the entire sentence of the original sentence makes it possible to determine which term is the substitute term compared to blackening or blurring (in other words, where the confidential term is described) Is difficult to determine. For this reason, by deleting the entire original sentence, the confidentiality can be improved as compared with the editing in which the confidential terms are blackened or blurred.

  Although each embodiment and each modification of the present technology have been described above, the present technology is not limited to only the above-described embodiments, and it is possible to make various changes without departing from the gist of the present technology. Of course.

Document processing device (MFP) 10
Secret term extraction module 101
Security permission level judgment module 102
Editing module 103
User level judgment module 104
Output module 105

Claims (6)

A confidential term extraction module for extracting confidential terms included in the original sentence included in the original document,
A control circuit that operates as an editing module that generates an alternative document including an alternative sentence having the same syntax as that of the original sentence by replacing the extracted confidential term with an alternative term that indicates the confidential term. Processing equipment. The document processing device according to claim 1, wherein
The document processing apparatus, wherein the editing module generates a plurality of different alternative documents according to a plurality of security permission levels. The document processing device according to claim 2, wherein
The control circuit further includes:
From the extracted security terms according to the plurality of security permission levels, operate as a security permission level determination module that determines a security term to be replaced with the alternative term,
The document processing apparatus, wherein the editing module generates the plurality of different alternative documents different according to the plurality of security permission levels by replacing the confidential terms different according to the plurality of security permission levels with the alternative terms. . The document processing device according to claim 2 or 3,
The control circuit further includes:
A document processing device that operates as a user level determination module that determines a security permission level according to a user who outputs the plurality of different alternative documents. The document processing apparatus according to claim 1, wherein:
The document processing device, wherein, when there is no alternative term that can replace the confidential term and the alternative sentence having the same syntax cannot be generated, the editing module generates the alternative document in which the original sentence is deleted. The control circuit of the document processing device
A confidential term extraction module for extracting confidential terms included in the original sentence included in the original document,
A document processing program that operates as an editing module that generates an alternative document including an alternative sentence having the same syntax as the syntax of the original sentence by replacing the extracted confidential term with an alternative term meaning the confidential term.

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