Searching method, searching device, and recorded medium
First Claim
1. A retrieval method for searching for a second character element string including a designated second character element from a first character element string including a first character element obtained by respectively character-recognizing each character of a character string, comprising:
- selecting a third character element from a predetermined third character elements with which a distance relevant to a similarity with the second character element is predetermined;
wherein the third character element is selected when the distance with the character element of the designated second character element string is within a predetermined range with respect to a reference distance that is an acceptable value of the predetermined distance based on a reliability when character-recognizing the first character element and,determining that the first character element matches the second character element when the selected third character element matches the first character element.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a retrieval method for searching a first character element string obtained by subjecting a character string to character recognition for a second character element string. The first character element string includes a first character element and the second character element string includes a second character element. A distance relevant to a similarity between the first character element and the second character element is predetermined between the first character element and the second character element. The retrieval method comprises the steps of comparing the distance with a predetermined reference distance, and determining whether the second character element matches the first character element based on a result of the comparison of the distance with the predetermined reference distance.
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Citations
16 Claims
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1. A retrieval method for searching for a second character element string including a designated second character element from a first character element string including a first character element obtained by respectively character-recognizing each character of a character string, comprising:
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selecting a third character element from a predetermined third character elements with which a distance relevant to a similarity with the second character element is predetermined; wherein the third character element is selected when the distance with the character element of the designated second character element string is within a predetermined range with respect to a reference distance that is an acceptable value of the predetermined distance based on a reliability when character-recognizing the first character element and, determining that the first character element matches the second character element when the selected third character element matches the first character element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A retrieval method comprising:
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for a specific character element of the plurality of character elements of a first character element string, a plurality of character elements having the possibility of being concatenated with the specific character element are predetermined, the retrieval method comprising the steps of; determining whether a character element string obtained by concatenating the specific character element of the plurality of character elements with one character element of the plurality of character elements, the one character elements being different from the specific character element, matches at least a part of the second character element string; selecting one character element from the plurality of character elements having the possibility of being concatenated with the specific character element; and determining whether a character element string obtained by concatenating the specific character element with the selected character element matches at least a part of the second character element string.
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9. A retrieval method comprising the steps of:
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obtaining a probability that a search result matches a second character element string, based on the number of the second character elements, which is a searching keyword, included in the second character element string, and a number of the second character elements, which is a character recognition result including errors, matching corresponding first character elements out of the second character elements included in the second character element string and; determining the correctness of the search result based on the probability. - View Dependent Claims (10, 11, 12)
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13. A retrieval device for searching for a second character element string including a designated second character element from a first character element string including a first character element obtained by respectively character-recognizing each character of a character string, comprising:
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means for selecting a third character element from a predetermined third character elements with which a distance relevant to a similarity with the second character element is predetermined; wherein the third character element is selected when the distance with the character element of the designated second character element string is within a predetermined range with respect to a reference distance that is an acceptable value of the predetermined distance based on a reliability when character-recognizing the first character element and, means for determining that the first character element matches the second character element when the selected third character element matches the first character element.
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14. A retrieval device for searching a first character element string obtained by subjecting a character string to character recognition for a second character element string,
wherein the first character element string includes at least one first character element and the second character element string includes at least one second character element, the retrieval device comprising: -
means for obtaining a probability that a search result matches the second character element string, based on the number of the second character elements included in the second character element string, and a number of the second character elements matching the corresponding first character elements out of the second character elements included in the second character element string; and means for determining the correctness of the search result based on the probability.
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15. A computer readable recording medium in which a program for causing a computer to execute a retrieval process for searching for a second character element string including a designated second character element from a first character element string including a first character element obtained by respectively character-recognizing each character of a character string, comprising:
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selecting a third character element from a predetermined third character elements with which a distance relevant to a similarity with the second character element is predetermined; wherein the third character element is selected when the distance with the character element of the designated second character element string is within a predetermined range with respect to a reference distance that is an acceptable value of the predetermined distance based on a reliability when character-recognizing the first character element and, determining that the first character element matches the second character element when the selected third character element matches the first character element.
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16. A computer readable recording medium in which a program for causing a computer to execute a retrieval process for searching a first character element string obtained by subjecting a character string to character recognition for a second character element string is recorded,
wherein the first character element string includes at least one first character element and the second character element string includes at least one second character element, the retrieval process comprising the steps of: -
obtaining a probability that a search result matches the second character element string, based on the number of the second character elements included in the second character element string, and a number of the second character elements matching the corresponding first character elements out of the second character elements included in the second character element string; and determining the correctness of the search result based on the probability.
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Specification