Method and apparatus for correcting error in speech recognition system

An apparatus for correcting an error in a speech recognition system, comprising:

• a database module for including a speech recognition error-answer pair DB based on a sound model, a word relationship information DB, a user error correction information DB, a domain articulation pattern DB, and a proper noun DB;
• a speech recognition error detection block for detecting an error in speech recognition for input speech;
• a first candidate answer search block for determining a first candidate answer group for a corresponding erroneous word using the speech recognition error-answer pair DB when the error in speech recognition is detected;
• a second candidate answer search block for determining a second candidate answer group for the corresponding erroneous word using the word relationship information DB when the error in speech recognition is detected;
• a third candidate answer search block for determining a third candidate answer group for the corresponding erroneous word using the user error correction information DB when the error in speech recognition is detected;
• a fourth candidate answer search block for determining a fourth candidate answer group for the corresponding erroneous word using the domain articulation pattern DB and the proper noun DB when the error in speech recognition is detected;
• and
• a candidate answer alignment and display block for aligning candidate answers within each of the determined candidate answer groups according to a specific condition and displaying the aligned candidate answers.