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  "Title": "Transform Univariate Time Series",
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    "pow_manly",
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    "pow_yj",
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    "rebase",
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    "rec_mean",
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    "rec_min",
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    "rec_prod",
    "rec_sd",
    "rec_sum",
    "rec_var",
    "roll",
    "roll_data",
    "root",
    "root_cubic",
    "root_sq",
    "scale_minmax",
    "scale_range",
    "scale_unit_len",
    "score_chisq",
    "score_mad",
    "score_t",
    "score_z",
    "select_lambda",
    "skewness",
    "smooth_kernel",
    "smooth_loess",
    "smooth_ma",
    "smooth_spline",
    "std_mean",
    "std_median"
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      "title": "Rolling operations",
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        "blck_data"
      ]
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      ]
    },
    {
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        "blck_median",
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        "diffx-rdiffx-ldiffx",
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        "rdiffx"
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        "dtrend_lin",
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        "dtrend_quad"
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    },
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    },
    {
      "page": "fill_locf",
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        "fill_locf"
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    },
    {
      "page": "fill_nocb",
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        "fill_nocb"
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    },
    {
      "page": "fill_spline",
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    {
      "page": "fill_vec",
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      ]
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    },
    {
      "page": "filter_bk",
      "title": "Baxter-King Filter",
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      ]
    },
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      "page": "filter_bw",
      "title": "Butterworth Filter",
      "topics": [
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      ]
    },
    {
      "page": "filter_cf",
      "title": "Christiano-Fitzgerald Filter",
      "topics": [
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      ]
    },
    {
      "page": "filter_hamilton",
      "title": "Hamilton Filter",
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      ]
    },
    {
      "page": "filter_hp",
      "title": "Hodrick-Prescot Filter",
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        "filter_hp"
      ]
    },
    {
      "page": "filter_tr",
      "title": "Trigonometric regression Filter",
      "topics": [
        "filter_tr"
      ]
    },
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      "page": "gmean",
      "title": "Geometric Mean value",
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        "gmean"
      ]
    },
    {
      "page": "leadx-lagx",
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        "lagx",
        "leadx",
        "leadx-lagx"
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    },
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        "modex",
        "modex_int"
      ]
    },
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