Package: ldhmm
Type: Package
Title: Hidden Markov Model for Financial Time-Series Based on Lambda
        Distribution
Version: 0.6.1
Date: 2023-12-31
Authors@R: person(given = c("Stephen", "H-T."), family = "Lihn",
                  email = "stevelihn@gmail.com", role = c("aut", "cre"))
Author: Stephen H-T. Lihn [aut, cre]
Maintainer: Stephen H-T. Lihn <stevelihn@gmail.com>
Description: Hidden Markov Model (HMM) based on symmetric lambda distribution
    framework is implemented for the study of return time-series in the financial
    market. Major features in the S&P500 index, such as regime identification,
    volatility clustering, and anti-correlation between return and volatility,
    can be extracted from HMM cleanly. Univariate symmetric lambda distribution
    is essentially a location-scale family of exponential power distribution.
    Such distribution is suitable for describing highly leptokurtic time series
    obtained from the financial market. It provides a theoretically solid foundation
    to explore such data where the normal distribution is not adequate. The HMM
    implementation follows closely the book: "Hidden Markov Models for Time Series",
    by Zucchini, MacDonald, Langrock (2016).
URL: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2979516
        https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3435667
Depends: R (>= 4.2.0)
Imports: stats, utils, gnorm, optimx, xts (>= 0.10-0), zoo, moments,
        parallel, graphics, scales, ggplot2, grid, yaml, methods
Suggests: knitr, testthat, depmixS4, roxygen2, R.rsp, shape
License: Artistic-2.0
Encoding: UTF-8
RoxygenNote: 7.2.3
Collate: 'ecld-cdf-method.R' 'ecld-class.R' 'ecld-constructor.R'
        'ecld-pdf-method.R' 'ecld-sd-method.R'
        'ldhmm-calc_stats_from_obs.R' 'ldhmm-numericOrNull-class.R'
        'ldhmm-package.R' 'ldhmm-class.R' 'ldhmm-conditional_prob.R'
        'ldhmm-constructor.R' 'ldhmm-data-config-internal.R'
        'ldhmm-decode_stats_history.R' 'ldhmm-decoding.R'
        'ldhmm-df2ts-method.R' 'ldhmm-forecast_prob.R'
        'ldhmm-forecast_state.R' 'ldhmm-forecast_volatility.R'
        'ldhmm-fred_data.R' 'ldhmm-gamma_init.R'
        'ldhmm-get-data-method.R' 'ldhmm-ld_stats.R'
        'ldhmm-log_forward.R' 'ldhmm-mle.R' 'ldhmm-mllk.R'
        'ldhmm-n2w.R' 'ldhmm-plot_spx_vix_obs.R'
        'ldhmm-pseudo_residuals.R' 'ldhmm-read-csv-by-symbol-method.R'
        'ldhmm-read_sample_object.R' 'ldhmm-simulate_abs_acf.R'
        'ldhmm-simulate_state_transition.R' 'ldhmm-sma.R'
        'ldhmm-state_ld.R' 'ldhmm-state_pdf.R' 'ldhmm-ts_abs_acf.R'
        'ldhmm-ts_log_rtn.R' 'ldhmm-viterbi.R' 'ldhmm-w2n.R'
NeedsCompilation: no
Packaged: 2023-12-11 04:53:20 UTC; stephenlihn
Repository: CRAN
Date/Publication: 2023-12-11 05:10:02 UTC
Built: R 4.4.3; ; 2025-11-12 03:41:34 UTC; windows
