WO2012061701A4 - Spell-check for a keyboard system with automatic correction - Google Patents

Spell-check for a keyboard system with automatic correction Download PDF

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Publication number
WO2012061701A4
WO2012061701A4 PCT/US2011/059319 US2011059319W WO2012061701A4 WO 2012061701 A4 WO2012061701 A4 WO 2012061701A4 US 2011059319 W US2011059319 W US 2011059319W WO 2012061701 A4 WO2012061701 A4 WO 2012061701A4
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WO
WIPO (PCT)
Prior art keywords
keys
key
edit
candidate
penalty
Prior art date
Application number
PCT/US2011/059319
Other languages
French (fr)
Other versions
WO2012061701A8 (en
WO2012061701A1 (en
Inventor
Erland Unruh
Original Assignee
Nuance Communications, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US12/939,918 external-priority patent/US8225203B2/en
Application filed by Nuance Communications, Inc. filed Critical Nuance Communications, Inc.
Priority to EP11838871.9A priority Critical patent/EP2636149A4/en
Priority to CN201180064099.6A priority patent/CN103299550B/en
Priority to KR1020137014217A priority patent/KR101520455B1/en
Publication of WO2012061701A1 publication Critical patent/WO2012061701A1/en
Publication of WO2012061701A4 publication Critical patent/WO2012061701A4/en
Publication of WO2012061701A8 publication Critical patent/WO2012061701A8/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
    • G06F3/0233—Character input methods
    • G06F3/0237—Character input methods using prediction or retrieval techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/20—Natural language analysis
    • G06F40/232—Orthographic correction, e.g. spell checking or vowelisation

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • General Health & Medical Sciences (AREA)
  • Machine Translation (AREA)
  • Document Processing Apparatus (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

User input is received, specifying a continuous traced path across a keyboard presented on a touch sensitive display. An input sequence is resolved. Including traced keys and auxiliary keys proximate to the traced keys by prescribed criteria. For each of one or more candidate entries of a prescribed vocabulary, a set-edit-dlstance metric is computed between said input sequence and the candidate entry. Various rules specify when penalties are imposed, or not, in computing the set-edit-distance metric. Candidate entries are ranked and displayed according to the computed metric.

Claims

AMENDED CLAIMS
received by the International Bureau on 17 May 2012 (17.05.2012)
1 . A text input apparatus, comprising:
a display including a touch sensitive display surface;
digital data storage containing a vocabulary database including multiple
vocabulary entries; and
coupled to the display and the storage, a processor programmed to perform operations comprising:
directing the display to show an arrangement of keys, each key
representing one or more characters;
via the display surface, receiving user input from a single touch to said display surface, said user input comprising a single continuous trace contacting multiple of the keys in an order, including a start key, an end key, and any intervening keys between the start key and the end key, where the single continuous trace disappears when the single touch is lifted;
defining an input sequence including the contacted keys and also
including any auxiliary keys comprising keys exhibiting prescribed proximity to the contacted keys;
comparing the input sequence to candidate entries from the vocabulary, including the following operations for each candidate entry:
computing a set-edit-distance metric to calculate a matching metric between said input sequence and the candidate entry; where:
the set-edit-distance computation imposes a penalty for omitting from the candidate word all keys from a first group comprising the start key and auxiliary keys to the start key; the set-edit-distance computation imposes a penalty for omitting from the candidate word all keys from a second group comprising the end key and auxiliary keys to the end key; the set-edit-distance computation imposes a penalty for omitting from the candidate word all keys from a third group
58 comprising any contacted keys and their auxiliaries where at least a prescribed minimum change in direction of the trace occurs;
the set-edit-distance computation does not impose any penalty for omitting from the candidate word any key of the input sequence outside all of the first, second, and third groups; and
the set-edit-distance computation does not impose any penalty for using any key in the input sequence twice or more in succession in the candidate word; and
ranking the candidate words according to criteria including at least the computed set-edit-distance metric, and providing an output of at least some of the ranked candidate words.
The apparatus of claim 1 , where:
the set-edit-distance computation does not impose any penalty for a
candidate word including characters of a prescribed group comprising any of: punctuation, digits, and symbols.
The apparatus of claim 1 , where:
the operations further include computing a keyboard-geometry-based probability in association with each computed set-edit-distance metric;
using the computed probability to break ties between similarly ranked candidate words.
4. The apparatus of claim 3 , where:
for each of the intervening keys, the keyboard-geometry-based probability is reduced according to speed at which the traced passed over the intervening key.
59 The apparatus of claim 3 , where:
the keyboard-geometry-based probability of a given key varies with radius of the key from a point on the trace.
The apparatus of claim 3 , where:
the keyboard-geometry-based probability of a given key varies according to area of the given key intersecting a prescribed rectangular touch area centered upon a contacted key nearest to the given key.
The apparatus of claim l , where:
the ranking operation is conducted so as to rank candidate words
according criteria including the set-edit-distance metric and a language-model-based probability.
The apparatus of claim l , where the operations further include:
tracking free cost adds and deletes and using the tracked free cost adds and deletes to break ties between similarly ranked candidate words.
The apparatus of claim l , where the operations further include:
computing stem-edit-distance and using the computed stem-edit-distance to break ties between similarly ranked candidate words.
10. A method, comprising operations of:
directing a display to show an arrangement of keys, each key representing one or more characters, where the display includes a touch sensitive surface; via the display surface, receiving user input from a single touch to said display surface, said user input comprising a single continuous trace contacting multiple of the keys in an order, including a start key, an end key, and any intervening keys between the start key and the end key, where the single continuous trace disappears when the single touch is lifted;
60 defining an input sequence including the contacted keys and also including any auxiliary keys comprising keys exhibiting prescribed proximity to the contacted keys;
comparing the input sequence to candidate entries from a vocabulary containing multiple vocabulary entries, the comparing operation including the following operations for each candidate entry: computing a set-edit- distance metric to calculate a matching metric between said input sequence and the candidate entry;
where:
the set-edit-distance computation imposes a penalty for omitting from the candidate word all keys from a first group comprising the start key and auxiliary keys to the start key;
the set-edit-distance computation imposes a penalty for omitting from the candidate word all keys from a second group comprising the end key and auxiliary keys to the end key;
the set-edit-distance computation imposes a penalty for omitting from the candidate word all keys from a third group comprising any contacted keys and their auxiliaries where at least a prescribed minimum change in direction of the trace occurs;
the set-edit-distance computation does not impose any penalty for
omitting from the candidate word any key of the input sequence outside all of the first, second, and third groups; and the set-edit-distance computation does not impose any penalty for using any key in the input sequence twice or more in succession in the candidate word; and
ranking the candidate words according to criteria including at least the computed set-edit-distance metric, and providing an output of at least some of the ranked candidate words;
where at least one of the operations is performed by a processor.
1 1 . The method of claim 10, where: the set-edit-distance computation does not impose any penalty for a candidate word including characters of a prescribed group comprising any of: punctuation, digits, and symbols.
12. The method of claim 10, where:
the operations further include computing a keyboard-geometry-based probability in association with each computed set-edit-distance metric;
using the computed probability to break ties between similarly ranked candidate words.
13. The method of claim 12, where:
for each of the intervening keys, the keyboard-geometry-based probability is reduced according to speed at which the trace passed over the intervening key.
14. The method of claim 12, where:
the keyboard-geometry-based probability of a given key varies with radius of the key from a point on the trace.
15. The method of claim 12, where:
the keyboard-geometry-based probability of a given key varies according to area of the given key intersecting a prescribed rectangular touch area centered upon a contacted key nearest to the given key.
16. The method of claim 10, where:
the ranking operation is conducted so as to rank candidate words
according to criteria including set-edit-distance metric and a language-model-based probability.
17. The method of claim 10, where the operations further include: tracking free cost adds and deletes and using the tracked free cost adds and deletes to break ties between similarly ranked candidate words.
18. The method of claim 10, where the operations further include:
computing stem-edit-distance and using the computed stem-edit-distance to break ties between similarly ranked candidate words.
19. An article of manufacture comprising at least one medium of digital data storage containing non-transitory storage of a program executable by a processor to perform the operations of claim 10.
20. A method, comprising operations of:
receiving user input from a single touch to said display surface, said user input, said user input specifying a continuous traced path across a keyboard presented on a touch sensitive display, where the continuous traced path disappears when the single touch is lifted;
resolving an input sequence of traced keys and auxiliary keys proximate to the traced keys by prescribed criteria;
for each of one or more candidate entries of a prescribed vocabulary, computing a set-edit-distance metric between said input sequence and the candidate entry;
where:
the set-edit-distance computation imposes a penalty for omitting from the candidate entry all keys from a first group comprising a start key of the path and auxiliary keys to the start key;
the set-edit-distance computation imposes a penalty for omitting from the candidate entry all keys from a second group comprising an end key of the path and auxiliary keys to the end key;
the set-edit-distance computation imposes a penalty for omitting from the candidate entry all keys from a third group comprising any traced
63 keys and their auxiliaries where at least a prescribed minimum change in direction of the path occurs;
the set-edit-distance computation does not impose any penalty for
omitting from the candidate entry any key of the input sequence outside all of the first, second, and third groups; and
the set-edit-distance computation does not impose any penalty the
candidate entry using any key in the input sequence twice or more in succession; and
ranking candidate entries according to the computed set-edit-distance metrics, and displaying an output of some or all of the ranked candidate entries; where at least one of the operations is performed by a processor.
21 . An apparatus comprising a touch sensitive display coupled to a processor, the processor programmed to perform operations of claim 20.
22. An article of manufacture comprising at least one medium of digital data storage containing non-transitory storage of a program executable by a processor to perform the operations of claim 20.
23. An apparatus, comprising:
a display;
a user input device comprising a keypad of multiple keys, or a touch
sensitive display surface;
digital data storage containing a vocabulary database including multiple vocabulary entries; and
coupled to the display, the user input, and the storage, a processor
programmed to perform operations comprising:
via the user input device, receiving user input from a single touch to said display surface, said user input comprising a sequence of keys comprising one of the following: keys contacted and proximate to a continuous trace entered via touch sensitive
64 display surface, where the continuous trace disappears when the single touch is lifted, or pressed keypad keys where one or more of the pressed keypad keys concurrently represents multiple characters;
identifying different candidate words each representing a
combination of characters potentially represented by the sequence of keys;
comparing the candidate words to entries of the vocabu lary to score the compared vocabulary entries accordingly to likelihood of representing the user input; and
where the comparing operation avoids penalizing any vocabulary entry that includes any of the following that is not present in the input sequence: punctuation, symbols, digits, repetition of any character represented on a key of the user input, use of multiple characters represented together on one key of the user input.
65
PCT/US2011/059319 2010-11-04 2011-11-04 Spell-check for a keyboard system with automatic correction WO2012061701A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11838871.9A EP2636149A4 (en) 2010-11-04 2011-11-04 Spell-check for a keyboard system with automatic correction
CN201180064099.6A CN103299550B (en) 2010-11-04 2011-11-04 For having the spell check of the keyboard system of automatic calibration
KR1020137014217A KR101520455B1 (en) 2010-11-04 2011-11-04 Spell-check for a keyboard system with automatic correction

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/939,916 2010-11-04
US12/939,918 US8225203B2 (en) 2007-02-01 2010-11-04 Spell-check for a keyboard system with automatic correction
US12/939,918 2010-11-04

Publications (3)

Publication Number Publication Date
WO2012061701A1 WO2012061701A1 (en) 2012-05-10
WO2012061701A4 true WO2012061701A4 (en) 2012-07-05
WO2012061701A8 WO2012061701A8 (en) 2013-06-06

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EP (1) EP2636149A4 (en)
KR (1) KR101520455B1 (en)
CN (1) CN103299550B (en)
WO (1) WO2012061701A1 (en)

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Also Published As

Publication number Publication date
CN103299550B (en) 2015-12-09
KR20130107325A (en) 2013-10-01
KR101520455B1 (en) 2015-05-21
WO2012061701A8 (en) 2013-06-06
EP2636149A4 (en) 2016-10-05
CN103299550A (en) 2013-09-11
EP2636149A1 (en) 2013-09-11
WO2012061701A1 (en) 2012-05-10

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