WO2006080469A1 - 構造化文書検索装置、構造化文書検索方法および構造化文書検索プログラム - Google Patents
構造化文書検索装置、構造化文書検索方法および構造化文書検索プログラム Download PDFInfo
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- WO2006080469A1 WO2006080469A1 PCT/JP2006/301373 JP2006301373W WO2006080469A1 WO 2006080469 A1 WO2006080469 A1 WO 2006080469A1 JP 2006301373 W JP2006301373 W JP 2006301373W WO 2006080469 A1 WO2006080469 A1 WO 2006080469A1
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/80—Information retrieval; Database structures therefor; File system structures therefor of semi-structured data, e.g. markup language structured data such as SGML, XML or HTML
- G06F16/83—Querying
- G06F16/835—Query processing
- G06F16/8373—Query execution
Definitions
- the present invention relates to a structured document search device, a structured document search method, and a structured document search program, and more particularly to a structured document search device and a structured document that search and extract a specific element of a structured document using a search expression. Related to search method and structured document search program.
- XML Path Lang As a search expression for extracting a specific element in an XML document as a structured document, an X path (XML Path Lang: XP Path) is used.
- XP at h is standardized by the standardization body W3 C (WWW Consortium) and its specifications are documented in the document 1 ("XM El Pas Language (Xpass)" XML
- XP a t h lists XML elements separated by and specifies specific elements in the structure. Conventionally, when searching for an element specified by XP a t h from an XML document, the XML document is temporarily stored in the DOM (D o c ume n t Ob j e c t Mo d e
- such a structured document search device 800 is composed of a structured document analysis unit 8 10, a search expression analysis unit 820, a search automaton management unit 840, and a storage device 850. ing.
- FIG. 12 is a flowchart showing the operation of the structured document search apparatus 800 shown in FIG.
- a search expression is input to the search expression analysis unit 820, the search expression is analyzed, and the analysis result is passed to the search automaton management unit 840 (step S 110).
- the search automaton management unit 840 receives the analysis result of the search expression, it creates a search automaton 851 and records it in the storage device 850 (step S830).
- Figure 13 shows an example of the search automaton 8 51 that is created.
- XP ath expression 510 which is an example of the search expression shown in FIG. 14, is input, search automaton 851 is created.
- the search automaton 851 includes four states 9 1 1, 9 12, 913, and 914, and state 914 is an end state. It also includes the state transitions 921, 922, and 923 between each state, and describes the events necessary for the state transition.
- a structured document for example, an XML document in the received message
- the structured document analysis unit 810 sequentially analyzes the structured document
- the analysis result is passed to the search automaton management unit 840 (step S 150).
- the structured document is analyzed for each part (for example, element), and is passed to the search and tomato management unit 840 each time.
- the search automaton management unit 840 performs the search automaton process (step S870) when the analysis result of the structured document is passed.
- FIG. 15 is a flowchart showing the processing performed in step S870.
- the search automaton management unit 840 checks whether or not the event of the passed analysis result relates to an element subject to state transition, and if not, the search automaton processing ends (step S 171). ).
- the event type of the analysis result is an event indicating the start of the element or the end of the element. If it is an event indicating the end of an element, the state of automaton 1 5 1 is reversed to the state before the transition, and the state is memorized. Record in device 1 5 0 (step S 1 7 8). If the result of step S 1 7 2 is an event indicating the start of an element, the state is changed according to the search automaton 8 51 and the current state is recorded in the storage device 8 5 0 (step S 1 7 3 ). If the state of the search automaton 8 5 1 reaches the end state as a result of the state transition (step S 1 7 4), it is determined that the search formula is met and the result is output (step S 1 7 5 ). The processing from step S 1 5 0 to step S 8 70 is repeated until the processing of the entire structured document is completed (step S 1 6 0).
- the problem with the conventional structured document retrieval system is that it is necessary to retrieve the structured document to the end in order to obtain enough elements that match the retrieval formula.
- the reason for this is that the conventional system mainly targets documents in which the target elements exist without bias, and does not hold information on where the target elements exist in the structured document. . For example, if it is known that the elements to be extracted appear in the first half of the structured document, such as extracting identification information from the communication text, useless analysis processing can also be a major cause of reducing system execution performance. obtain.
- the present invention makes it possible to obtain elements that match the search expression without excess or deficiency simply by analyzing the necessary parts of the structured document in the structured document search system, and improve the processing efficiency.
- the purpose is to do so. Disclosure of the invention
- the structured document search apparatus analyzes a structured document by means of a structured document analyzing means (for example, structured document analyzing unit 110, SAX parser 4 110) that sequentially analyzes the structured document.
- a structure information analysis means that interrupts the analysis of the structured document when it is confirmed that the target element does not appear any more (for example, structured document analysis section 1 1 0, SAX parser 4 1 0, search automaton management Part 1 4 40, 2 4 0).
- Structure information is information that includes the inclusion relationship between elements for the elements that make up a structured document, and includes either or both of the order of appearance of the elements and the restrictions on the number of applications (the number itself or the range related to the number). It is.
- the structured document search apparatus is a structured document search apparatus that extracts an element designated by a search expression (for example, XP ath expression: XML Path Language expression) from a structured document (for example, XML document).
- a search expression for example, XP ath expression: XML Path Language expression
- the structured document analysis unit for example, structured document analysis unit 110, SAX parser 4 10) sequentially analyzes the structured document (for example, step S150), and the search processing unit (for example, search automaton).
- the management unit 140, 240) searches for elements that match the search expression.
- step S 180 If all the interruption conditions are satisfied, the analysis of the structured document is interrupted and the search is terminated (for example, step S 180).
- the search is terminated (for example, step S 180).
- a condition that causes the element specified in the search expression to stop appearing is added to the search module, and when the condition is satisfied, the analysis is terminated, and the structured document is not analyzed until the end. You can search the elements specified by the expression without excess or deficiency.
- the search expression can be used without analyzing the structured document to the end. It can be determined that the specified element does not appear.
- FIG. 1 is a block diagram showing a configuration example of a structured document search apparatus according to the first embodiment of the present invention.
- FIG. 2 is a flowchart showing the operation of the structured document search apparatus according to the first embodiment of the present invention.
- FIG. 3 is a flowchart showing the operation of the search automaton process in the first embodiment of the present invention.
- FIG. 4 is a block diagram showing a configuration example of the structured document search device according to the second embodiment of the present invention.
- FIG. 5 is a block diagram showing an example of a configuration including a structured document search program for executing a structured document search.
- FIG. 6 is a block diagram illustrating an XP Path search device according to an embodiment of the present invention.
- FIG. 7 is an explanatory diagram showing an example of XMLLS chemare.
- FIG. 8 is an explanatory diagram showing an example of a search automaton in the embodiment of the present invention.
- FIG. 9 is an explanatory diagram showing an example of an XML document.
- FIG. 10 is an explanatory diagram showing an example of an event sequence generated from the S A X parser.
- FIG. 11 is a block diagram showing an example of a conventional structured document search apparatus.
- FIG. 12 is a flowchart showing the operation of the conventional structured document search apparatus.
- FIG. 13 is a block diagram showing an example of a search automaton in a conventional structured document search apparatus.
- FIG. 14 is an explanatory diagram showing an example of the X P at h equation.
- Fig. 15 is a flowchart showing the operation of search automaton processing in a conventional structured document search device.
- FIG. 1 is a block diagram showing a configuration example of a structured document search apparatus 100 according to the first embodiment of the present invention.
- the structured document retrieval apparatus 1 0 0 includes a structured document analysis unit 1 1 0, a search expression analysis unit 1 2 0, a structure information analysis unit 1 3 0, and a search automaton management unit. 1 4 0 and storage device 1 5 0 are included.
- the structured document analysis unit 1 1 0 analyzes a structured document input from an input device such as an input device or network interface, or a storage device such as a RAM or hard disk, and sequentially searches the analysis results. Pass to the search automaton manager 1 4 0.
- the search expression analyzing unit 120 has a function of analyzing a search expression input from an input device or a storage device.
- the search expression analysis unit 1 2 0 analyzes the input search expression and passes the analysis result to the search automaton management unit 1 4 0.
- the structure information analysis unit 130 has a function of analyzing structure information input from an input device or a storage device. Structural information analysis The unit 130 analyzes the input structural information and passes the analysis result to the search automaton management unit 10.
- the search automaton management unit 140 has a function for creating a search automaton 151 and a search automaton state transition function.
- the search automaton management unit 140 creates a search automaton 1 5 1 based on the analysis result of the search formula passed from the search formula analysis unit 120 and the analysis result of the structural information passed from the structural information analysis unit 130, and the storage device 1 Record 50. Based on the structural information obtained from the structural information analysis unit 130, the created search-tomaton 151 records a condition in which an element that causes each state transition does not appear as an interruption condition.
- information on the maximum number of occurrences of the element can be used.
- Information on the order of appearance of elements can also be used. If the appearance order of elements is described in the structure information, when an element that appears only after the last occurrence of an element that causes a state transition appears, no more elements that cause a state transition occur Since it can be determined that it does not, information on the appearance order of elements can be used as a break condition.
- the structured document is XML, which is a preferred example
- an XML schema XML Sc hema
- DTD Do c ume n t Typ e
- De f i n i t i on can also be used.
- the maximum number of occurrences of elements described as max Oc c ur can be used as the interruption condition, and the appearance order of elements described in se que nc e can also be used.
- the search automaton management unit 140 changes the state of the search automaton 151 recorded in the storage device 150 based on the sequential analysis result of the structured document obtained from the structured document analysis unit 110.
- the state transition that matches the interruption condition added to the search automaton 151 is deleted from the search automaton 151.
- the search automaton 1 51 reaches the end state, it is determined that the search formula matches, and the result is output.
- the storage device 150 is configured by a storage medium such as a RAM, for example. Various information such as Tomato 151 is stored.
- FIG. 2 is a flowchart showing an example of structured document search executed by the structured document search apparatus 100.
- the search expression analysis unit 120 analyzes the search expression and passes the analysis result to the search automaton management unit 140 (step S 110).
- XP at h can be used as a suitable example of a search expression.
- XPo inte r (XML P o in ter) can also be used.
- the structure information analysis unit 130 analyzes the structure information and passes the analysis result to the search automaton management unit 140 (step S120). Note that the execution order of step S 1 10 and step S 120 can be interchanged.
- the search automaton management unit 140 Upon receiving the analysis result of the search expression and the search result of the structure information, the search automaton management unit 140 creates a search automaton 1 51 and records it in the storage device 150 (step S 1 3 0).
- the structured document analysis unit 1 10 sequentially analyzes the structured document and retrieves the analysis result. It is passed to the management unit 140 (step S 1 50).
- the structured document analysis unit 110 analyzes the structured document for each part, and passes the analysis result to the search automaton management unit 140 each time the analysis is performed.
- the analysis is performed for each tag.
- the SAX format can be used as a way to pass such analysis results.
- Pu l type analysis such as StAX can also be used.
- the SAX format was developed as a standard interface for event-based XML parsing, and the Internet ⁇ ht tp: //java.sun.com/ j se / l.4 / en / docs /] a / api / org / xml / sax / package-summary.html> The implementation manual is posted.
- FIG. 3 is a flowchart showing the processing performed in step S 1700.
- the search automaton management unit 1 4 0 checks whether or not the event of the passed analysis result relates to an element subject to state transition, and if it is not subject to state transition, proceeds to the processing after step S 1 76 (step S 1 7 1). Subsequently, it is determined whether the event type of the analysis result is an event indicating the start of the element or an event indicating the end of the element (step S 1 7 2). If the event indicates the end of the element, the automaton The state of 1 51 is changed to the state before the transition in the reverse direction, and the state is recorded in the storage device 1 5 0 (step S 1 78).
- step S 1 7 2 If it is an event indicating the start of an element as a result of the processing of step S 1 7 2, the state is changed according to the search automaton 1 5 1, and if the next state transition is deleted, the current state is restored. Is stored in the storage device 1 5 0 (step S 1 7 3). If the state of the search automaton 1 5 1 reaches the end state as a result of the state transition (step S 1 7 4), it is determined that the search formula is matched and the result is output (step S 1 7 5 5 ). Subsequently, when the interruption condition is satisfied (step S 1 7 6), the state transitions that match the interruption condition are deleted from the search automaton 1 5 1 and recorded in the storage device 1 5 0 (step S 1 7 7).
- the search automaton management unit 14 0 checks whether or not a valid state transition remains in the search automaton 1 51 (step S 1 8 0). If a valid state transition remains, the processing from step S 1 5 0 to step S 1 80 is repeated. If there is no valid state transition, the structured document analysis unit 1 1 0 is instructed to end the analysis and the search is terminated. Next, the effect of this embodiment will be described. In this embodiment, the structural information analysis unit 1 3 0 acquires the interruption condition from the structural information, and the search automaton management unit 1 4 0 deletes the corresponding state transition when the interruption condition is satisfied, When there is no valid state transition, the end of analysis is instructed. As a result, structured document analysis processing can be reduced, and the search processing load can be reduced.
- FIG. 4 shows an example of the structure of the structured document search apparatus 200 according to the second embodiment of the present invention.
- FIG. 4 the same components as those in the structured document search apparatus 100 shown in FIG. 1 are assigned the same reference numerals and their detailed explanations are omitted.
- the structured document search device 2 0 0 includes a structured document analysis unit 1 1 0, a search expression analysis unit 1 2 0, a structure information analysis unit 2 3 0, and a search automaton management unit 2 4 0 and storage device 2 5 0.
- the structural information analysis unit 2 3 0 has a function of analyzing the input structural information in the same manner as the structural information analysis unit 1 3 0 in the first embodiment.
- the structural information analysis unit 1 3 0 analyzes the inputted structural information, but records the analysis result as structural information 2 5 2 in the storage device 2 5 0.
- the search automaton management unit 24 0 has the same function as the search automaton management unit 1 4 0 in the first embodiment, but the structure in which necessary structural information is recorded in the storage device 2 5 0 Information 2 5 The part acquired from 2 is different.
- the storage device 25 50 records the structure information 2 52 in addition to the information recorded by the storage device 15 50 in the first embodiment.
- the structured document search device 200 operates in the same manner as the structured document search device 100 according to the first embodiment. That is, when a search expression is input, the search expression analysis unit 1 2 0 analyzes the search expression and passes the analysis result to the search automaton management unit 2 4 0 (see step S 1 1 0 in FIG. 2). When the structure information is input, the structure information analysis unit 2 3 0 analyzes the structure information and passes the analysis result to the search automaton management unit 2 4 0 (step S 1 2 0). However, in the present embodiment, the structure information analysis unit 2 3 0 also passes the structure information to the storage device 2 5 0.
- the search automaton management unit 2400 Upon receiving the analysis result of the search expression, the search automaton management unit 2400 creates a search automaton 1 51 and records it in the storage device 2 5 0 (step S 1 3 0). However, in the present embodiment, the search automaton management unit 2400 inputs the search result of the structure information from the storage device 2500.
- the structured document analysis unit 1 1 0 analyzes the structured document and retrieves the analysis result.
- Automaton management unit 2 Pass to 4 0 (step S 1 5 0).
- the search automaton management unit 1 4 0 is the same as that of the first embodiment. As in the case, search automaton processing (step S 1 7 0) is performed.
- the structure information 2 52 is recorded in the storage device 2 5 0, it is not necessary to input the structure information every time a search expression is input, and the structure information 2 5 0 is stored in the storage device 2 5 0.
- the structured information 2 5 2 can be reused.
- the structured document search device Although not specifically mentioned in the above-described embodiments, the structured document search device
- Various control processes in 1 0 0 and 2 0 0 are executed according to a structured document search program 3 2 0 (see FIG. 5) for executing a structured document search process.
- FIG. 5 is a block diagram including a structured document search program 3 2 0 for executing the above-described structured document search processing and a data processing device 3 3 0 that operates according to the structured document processing program 3 2 0. is there.
- the input / output unit 3 1 0 and the storage device 1 5 0 are also shown.
- the data processing device 3 3 0 includes a central processing unit (CPU), and executes various control processes in the structured document search devices 1 0 0 and 2 0 0 according to the first and second embodiments.
- the structured document processing program 3 2 0 is a control program for causing the data processing device 3 3 0 to execute the various control processes described above.
- the structured document processing program 3 2 0 is installed in the data processing device 3 3 0.
- the data processor 3 3 0 writes information to the storage device 1 5 0 and reads information from the storage device 1 5 0, as well as the first and second Various controls in the embodiment are executed.
- FIG. 6 is a block diagram showing the structured document retrieval apparatus of this embodiment.
- the structured document retrieval apparatus of the present embodiment is an X P at h search apparatus 400 which extracts a specific element described by the retrieval formula XML P at h language (X P at h) from the X L L document.
- the XP ath search device 4 0 0 includes a SAX parser 4 1 0 as a structured document analysis unit, an XP ath analysis unit 4 2 0 as a search expression analysis unit, and a structure.
- An XML schema analysis unit 430 is provided as a structure information analysis unit.
- the XP aht formula 5 10 shown in FIG. 14 is input as a retrieval formula from a keyboard (not shown).
- the analysis result is passed to the search automaton management unit 140.
- XML Sketch 520 shown in FIG. 7 is input as structure information from a hard disk (not shown).
- the search automaton management unit 140 that has received the analysis result of the XP at h expression 510 and the analysis information of the structural information 520 creates a search automaton 600 shown in FIG.
- the search-tomatomaton 600 has four states 611 to 614, and state transitions 621 to 623 between the states. Note that state 614 is an end state.
- the interruption conditions are described in the state transitions 621 to 623.
- the maximum number of state transitions based on the analysis result of the structure information 520 max (1) (state transitions 621 and 623), the next element after the state transition element next (d) (state transition 622).
- an XML document 530 shown in FIG. 9 is input to the SAX parser 410 from, for example, a network interface.
- Figure 10 shows an XML document 5
- the second result is output by event 7 07.
- Event 7 0 8, 7 0 9 returns to state 6 1 2, and event transition 7 2 0 also deletes state transition 6 2 2 because the interrupt condition for the next element is satisfied.
- all the valid state transitions in the search automaton 6 0 0 disappear, so the SAX parser 4 1 0 is instructed to stop and the search is terminated.
- the search expression can be used without analyzing the structured document to the end.
- the specified element can be searched without excess or deficiency.
- the present invention can be applied to the use of extracting specific information from an XML document. Further, according to the present invention, for example, the present invention can be applied to a router that extracts a specific element from an XML document flowing on a communication path and performs routing. Furthermore, it can be applied to applications such as communication relay devices that perform various controls such as path control, log collection, access control, and message conversion on the communication path. It can also be applied as a processing device that determines processing modules according to the elements extracted from structured documents such as XML documents that arrive at the search device.
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Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007500615A JP4978894B2 (ja) | 2005-01-25 | 2006-01-23 | 構造化文書検索装置、構造化文書検索方法および構造化文書検索プログラム |
| US11/795,979 US20080133450A1 (en) | 2005-01-25 | 2006-01-23 | Structured Document Retrieval Device, Structured Document Retrieval Method Structured Document Retrieval Program |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005017331 | 2005-01-25 | ||
| JP2005-017331 | 2005-01-25 |
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| WO2006080469A1 true WO2006080469A1 (ja) | 2006-08-03 |
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| PCT/JP2006/301373 Ceased WO2006080469A1 (ja) | 2005-01-25 | 2006-01-23 | 構造化文書検索装置、構造化文書検索方法および構造化文書検索プログラム |
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| US (1) | US20080133450A1 (ja) |
| JP (1) | JP4978894B2 (ja) |
| WO (1) | WO2006080469A1 (ja) |
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| JP4982154B2 (ja) * | 2006-11-08 | 2012-07-25 | 株式会社日立製作所 | 構造化文書の構文解析方法及び装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH096803A (ja) * | 1995-06-22 | 1997-01-10 | Fuji Xerox Co Ltd | 文書データベース管理装置 |
| JP2001282856A (ja) * | 2000-03-31 | 2001-10-12 | Toshiba Corp | インデックス作成方法、インデックス表示方法、インデックス検索方法及びインデックス作成装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3908410B2 (ja) * | 1999-05-28 | 2007-04-25 | 日本電気株式会社 | 言語解析装置及び方法並びに記録媒体 |
| SG152905A1 (en) * | 2002-04-12 | 2009-06-29 | Mitsubishi Electric Corp | Metadata editing apparatus, metadata reproduction apparatus, metadata delivery apparatus, metadata search apparatus, metadata re-generation condition setting apparatus, and metadata delivery method |
| KR100558765B1 (ko) * | 2002-11-14 | 2006-03-10 | 한국과학기술원 | 적응형 경로 인덱스를 이용한 xml 질의 수행 방법 |
| JP4267336B2 (ja) * | 2003-01-30 | 2009-05-27 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 構造パターン候補を生成する方法、システムおよびプログラム |
| JP3982623B2 (ja) * | 2003-03-25 | 2007-09-26 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 情報処理装置、データベース検索システム及びプログラム |
| US7124147B2 (en) * | 2003-04-29 | 2006-10-17 | Hewlett-Packard Development Company, L.P. | Data structures related to documents, and querying such data structures |
-
2006
- 2006-01-23 WO PCT/JP2006/301373 patent/WO2006080469A1/ja not_active Ceased
- 2006-01-23 US US11/795,979 patent/US20080133450A1/en not_active Abandoned
- 2006-01-23 JP JP2007500615A patent/JP4978894B2/ja not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH096803A (ja) * | 1995-06-22 | 1997-01-10 | Fuji Xerox Co Ltd | 文書データベース管理装置 |
| JP2001282856A (ja) * | 2000-03-31 | 2001-10-12 | Toshiba Corp | インデックス作成方法、インデックス表示方法、インデックス検索方法及びインデックス作成装置 |
Non-Patent Citations (1)
| Title |
|---|
| TAKEDA M. ET AL.: "Stream Shiko no Kosoku XML Data Shori Giho ni tsuite", DATABASE TO WEB JOHO SYSTEM NI KANSURU SYMPOSIUM RONBUSHU, INFORMATION PROCESSING SOCIETY OF JAPAN, SYMPOSIUM SERIES, vol. 2003, no. 18, 26 November 2003 (2003-11-26), pages 117 - 124, XP003000561 * |
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| Publication number | Publication date |
|---|---|
| JPWO2006080469A1 (ja) | 2008-06-19 |
| JP4978894B2 (ja) | 2012-07-18 |
| US20080133450A1 (en) | 2008-06-05 |
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