搜索结果: 121-135 共查到“经济学 over Time”相关记录195条 . 查询时间(0.191 秒)
Risk Aversion and Portfolio Selection in a Continuous-Time Model
Risk Aversion Portfolio Selection Continuous-Time Model
2010/12/17
The comparative statics of the optimal portfolios across individuals is carried out for a continuous-time complete market model, where the risky assets price process follows a joint geometric Brownia...
Variance Optimal Hedging for continuous time processes with independent increments and applications
Variance Optimal continuous time processes independent increments applications
2010/11/3
Variance Optimal Hedging for continuous time processes with independent increments and applications.
Gain/loss asymmetry in time series of individual stock prices and its relationship to the leverage effect
gain/loss asymmetry leverage effect EGARCH retarded volatility model
2010/11/3
Previous research has shown that for stock indices, the most likely time until a return of a
particular size has been observed is longer for gains than for losses. We establish that this so-called ga...
Mutual Fund Theorem for continuous time markets with random coefficients
optimal portfolio Mutual Fund Theorem continuous time market models
2010/11/2
We study the optimal investment problem for a continuous time incomplete market model such that the risk-free rate, the appreciation rates and the volatility of the stocks are all random; they are ass...
Superstatistical fluctuations in time series: Applications to share-price dynamics and turbulence
Superstatistical fluctuations dynamics turbulence
2010/10/29
We report a general technique to study a given experimental time series with superstatistics.
Crucial for the applicability of the superstatistics concept is the existence of a parameter β that fluct...
A Unified Approach to Validating Univariate and Multivariate Conditional Distribution Models in Time Series
Diagnostic procedure Empirical distribution function Frequency domain Generalized Cramer-von Mises test Kernel method Non-Markovian process Time series conditional distribution
2011/4/2
Modeling conditional distributions in time series has attracted increasing attention in economics and finance. We develop a new class of generalized Cramer-von Mises (GCM) specification tests for time...
Time Varying Risk Aversion: An Application to Energy Hedging
Energy Hedging Risk Management Risk Aversion Forecasting
2011/3/31
Risk aversion is a key element of utility maximizing hedge strategies; however, it has typically been assigned an arbitrary value in the literature. This paper instead applies a GARCH-in-Mean (GARCH-M...
NONPARAMETRIC TESTS OF THE MARKOV HYPOTHESIS IN CONTINUOUS-TIME MODELS
Markov hypothesis Chapman–Kolmogorov equation locally linear smoother transition density diffusion
2014/3/13
We propose several statistics to test the Markov hypothesis forβ-mixing stationary processes sampled at discrete time intervals. Our tests are based on the Chapman–Kolmogorov equation. We establish th...
In this article we propose a generalization of the linear factor model, that combines hidden Markov chain Models (HMM) with latent factor models. The HMM generates a piece-wise constant state evoluti...
Persistence in US Interest Rates: Is it Stable Over Time?
Fractional integration interest rates persistence
2010/9/7
This paper analyses persistence in US interest rates. It focuses on the Federal Funds effective rate, whose degree of persistence is modelled using fractional integration, monthly from July 1954 throu...
Macroeconomic Phase Transitions Detected from the Dow Jones Industrial Average Time Series
DJI macroeconomic cycle phase transitions segmentation clustering
2010/11/1
In this paper, we perform statistical segmentation and clustering analysis of the Dow Jones Industrial Average time series between January 1997 and August 2008.Modeling the index movements and log-ind...
Credit risk modeling using time-changed Brownian motion
Credit risk structural credit model time change L´ evy process first passage time default probability credit derivative
2010/11/1
Motivated by the interplay between structural and reduced form credit models, we propose
to model the firm value process as a time-changed Brownian motion that may include
jumps and stochastic volat...
Minimizing the expected market time to reach a certain wealth level
Num´ eraire portfolio growth-optimal portfolio market time upcrossing overshoot exponential L´ evy markets Itˆ o markets semimartingale markets
2010/11/1
In a financial market model, we consider variations of the problem of minimizing the
expected time to upcross a certain wealth level. For exponential L´evy markets, we show the asymptotic optim...
Recovering a time-homogeneous stock price process from perpetual option prices
time-homogeneous stock price perpetual option prices
2010/10/29
It is well-known how to determine the price of perpetual American options if the underlying stock price is a time-homogeneous diffusion.In the present paper we consider the inverse problem, i.e. given...
Consumption and Portfolio Rules for Time-Inconsistent Investors
Finance Consumption and portfolio rules Non-constant discounting
2010/10/29
This paper extends the classical consumption and portfolio rules model in continuous time (Merton 1969, 1971) to the framework of decision-makers with time-inconsistent preferences. The model is solve...