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전투력 요소로 본 이순신의 전투준비태세와 초기전투 승리요인
이경식(Lee, Gyeong-sig) 국방부 군사편찬연구소 2016 군사 Vol.- No.98
This study focuses on how General Lee achieved continuous victories in the beginning of Japanese invasion. Unlike previous studies that focused on the victory factors on the water, this study focuses on analyses of General Lee’s combat preparation and emphasized combat capability during initial stages of battles, which defeated Japanese forces. The background of General Lee’s substantial war preparation came from the battle of Japanese invasion led by Hong-Yang in the Year of Jeong-Hae (1587). By developing the foundation for discipline and commanding system based on the past experience, Lee focused on creative, yet stuck to the basic war-preparation. One of Lee’s creative works was that he collected information of Japanese combat style to create his battle strategies: to deny enemy"s climbing up the warship, but to be close enough to target enemy ships with turtle ships, and to inspect the war preparations. For the war preparations, Lee inspected ships, various weapons, and defense system on the field. But most importantly, Lee’s victorious background originated from his nationally scaled propulsion for increasing the number of war-ships, development of cannons specially designed for battles against Japanese forces. When the actual Lim-Gin Japanese invasion occurred, Lee was fully prepared to go to the war against Japan by utilizing the effective reporting system, which reached to Right naval HQ located in Jeon-Ra provinces, observatory posts, and central government in a very short time. Lee also prepared for all possible routes of Japanese incomings and settled his navy on sea of Gyeong-Sang waiting for the imminent battle command from the government. In order to execute Command & Control system in the battle at the sea of Gyeong-Sang, Lee required strict command system, and hierarchy with Won-Gyun and Uk-Gi Lee’s fleet, which allowed well-coordinated strategic system. Also, strategy integrated intelligence, maneuver, fires, and force protections against Japanese Force. First, spot the enemy, approach with fleets during earl dawn when security is assured, then charge with turtle ships and full-on assailment of cannons with Pan-Ok ships to defeat Japanese Navy. After such strategy, Lee quickly ran away from the battle scene in order to prepare for the possible ambush attacks and buy some maintenance time for his navy. In summary, Lee achieved the victory via analyzing Japanese Navy’s current status, geography, water current, surround and attack strategy, ambush attacks, and effective maneuvers, which integrated with turtle ships and navy’s fire power. He also inspected his forces, fleets, and other weapons to sustain his combat capabilities. He distributed loots from the battles to his soldiers to alleviate their fear and fatigue. The most important victory factor would be Lee’s victory oriented leadership. His leadership highlighted field focused operations, principles, executions, and keen discernment, which contributed to flexible strategies, all with courage, fairness, people and his navy. In order to win the war, combat capability had to be performed at its best, and Lee’s victories at the initial battles exemplify preparation for the war and successful coordination of combat capability with his leadership in the naval battles.
Signomial Classification Method with <sub>0</sub>-regularization
이경식,Lee, Kyung-Sik Korean Institute of Industrial Engineers 2011 산업공학 Vol.24 No.2
In this study, we propose a signomial classification method with <sub>0</sub>-regularization (<sub>0</sub>-)which seeks a sparse signomial function by solving a mixed-integer program to minimize the weighted sum of the <sub>0</sub>-norm of the coefficient vector of the resulting function and the $L_1$-norm of loss caused by the function. $SC_0$ gives an explicit description of the resulting function with a small number of terms in the original input space, which can be used for prediction purposes as well as interpretation purposes. We present a practical implementation of $SC_0$ based on the mixed-integer programming and the column generation procedure previously proposed for the signomial classification method with $SL_1$-regularization. Computational study shows that $SC_0$ gives competitive performance compared to other widely used learning methods for classification.