인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 저자정보
초록·키워드
A finite difference scheme with adaptive time-step control is constructed for the normalized time-fractional Black-Scholes equation. The normalized fractional derivative has the total kernel weight as one, so that comparison of different fractional orders becomes more meaningful. After the time reversal τ = T-t, we derive an implicit finite difference method on a nonuniform temporal grid. The history term is approximated by normalized discrete weights, and the fully discrete system reduces to a tridiagonal system at each time level, which is efficiently solved by the Thomas algorithm. The step size is computed from a discrete-Laplacian indicator M<sup>n</sup>, subject to prescribed lower and upper bounds. This choice gives small time steps when the numerical solution has sharp spatial variation and large time steps when the solution changes slowly. Numerical tests are carried out for a European cash-or-nothing call option and a European butterfly call spread. The results show how the fractional order affects the option value and time-step history. For the butterfly call spread, the adaptive method gives smaller local L² errors on the strike interval and fewer time steps than the uniform method under the tested parameter sets, with shorter CPU times in the reported cases.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.