11. A computer-implemented method of determining a stage using a technology lifecycle by a stage determination apparatus, the method comprising the steps of: (a) creating a feature set for each technology positioned on the technology lifecycle; (b) calculating a common feature value of feature sets of technologies belonging to the same stage in the technology lifecycle and creating an answer feature set of each stage; (c) if a specific technology is inputted, creating a feature set for the specific technology and determining a stage where the specific technology belongs to in the technology lifecycle by comparing the feature set of the specific technology with the answer feature set, wherein step (c) include the steps of: if a specific technology is inputted, acquiring feature-related information for calculating feature values of features contained in a predefined feature set by searching a bibliographic database; calculating a feature value for each feature using the acquired feature-related information; creating a feature set containing the calculated feature values for the specific technology; comparing a corresponding feature value contained in the feature set of the specific technology with a feature value according to a feature selection flow set in a previously constructed decision tree according to the feature selection flow set in the decision tree; and determining a stage having a feature value finally selected according to the feature selection flow of the decision tree as a stage where the specific technology belongs to in the technology lifecycle.
11. A computer-implemented method of determining a stage using a technology lifecycle by a stage determination apparatus, the method comprising the steps of: (a) creating a feature set for each technology positioned on the technology lifecycle; (b) calculating a common feature value of feature sets of technologies belonging to the same stage in the technology lifecycle and creating an answer feature set of each stage; (c) if a specific technology is inputted, creating a feature set for the specific technology and determining a stage where the specific technology belongs to in the technology lifecycle by comparing the feature set of the specific technology with the answer feature set, wherein step (c) include the steps of: if a specific technology is inputted, acquiring feature-related information for calculating feature values of features contained in a predefined feature set by searching a bibliographic database; calculating a feature value for each feature using the acquired feature-related information; creating a feature set containing the calculated feature values for the specific technology; comparing a corresponding feature value contained in the feature set of the specific technology with a feature value according to a feature selection flow set in a previously constructed decision tree according to the feature selection flow set in the decision tree; and determining a stage having a feature value finally selected according to the feature selection flow of the decision tree as a stage where the specific technology belongs to in the technology lifecycle. 13. The method according to claim 11 , wherein step (a) includes the steps of: acquiring feature-related information for calculating feature values of features contained in a predefined feature set by searching the bibliographic database for the technologies; calculating a feature value of each feature by technology using the acquired feature-related information; and creating a feature set containing the calculated feature values for each technology.