[docs] Change doc link to monotone constraints report to HAL document (#3410)

docs/Parameters.rst

@@ -470,15 +470,15 @@ Learning Control Parameters
 
       -  ``basic``, the most basic monotone constraints method. It does not slow the library at all, but over-constrains the predictions
 
-      -  ``intermediate``, a `more advanced method <https://github.com/microsoft/LightGBM/files/3457826/PR-monotone-constraints-report.pdf>`__, which may slow the library very slightly. However, this method is much less constraining than the basic method and should significantly improve the results
+      -  ``intermediate``, a `more advanced method <https://hal.archives-ouvertes.fr/hal-02862802/document>`__, which may slow the library very slightly. However, this method is much less constraining than the basic method and should significantly improve the results
 
-      -  ``advanced``, an `even more advanced method <https://github.com/microsoft/LightGBM/files/3457826/PR-monotone-constraints-report.pdf>`__, which may slow the library. However, this method is even less constraining than the intermediate method and should again significantly improve the results
+      -  ``advanced``, an `even more advanced method <https://hal.archives-ouvertes.fr/hal-02862802/document>`__, which may slow the library. However, this method is even less constraining than the intermediate method and should again significantly improve the results
 
 -  ``monotone_penalty`` :raw-html:`<a id="monotone_penalty" title="Permalink to this parameter" href="#monotone_penalty">&#x1F517;&#xFE0E;</a>`, default = ``0.0``, type = double, aliases: ``monotone_splits_penalty``, ``ms_penalty``, ``mc_penalty``, constraints: ``monotone_penalty >= 0.0``
 
    -  used only if ``monotone_constraints`` is set
 
-   -  `monotone penalty <https://github.com/microsoft/LightGBM/files/3457826/PR-monotone-constraints-report.pdf>`__: a penalization parameter X forbids any monotone splits on the first X (rounded down) level(s) of the tree. The penalty applied to monotone splits on a given depth is a continuous, increasing function the penalization parameter
+   -  `monotone penalty <https://hal.archives-ouvertes.fr/hal-02862802/document>`__: a penalization parameter X forbids any monotone splits on the first X (rounded down) level(s) of the tree. The penalty applied to monotone splits on a given depth is a continuous, increasing function the penalization parameter
 
    -  if ``0.0`` (the default), no penalization is applied
 

include/LightGBM/config.h

@@ -447,14 +447,14 @@ struct Config {
   // desc = used only if ``monotone_constraints`` is set
   // desc = monotone constraints method
   // descl2 = ``basic``, the most basic monotone constraints method. It does not slow the library at all, but over-constrains the predictions
-  // descl2 = ``intermediate``, a `more advanced method <https://github.com/microsoft/LightGBM/files/3457826/PR-monotone-constraints-report.pdf>`__, which may slow the library very slightly. However, this method is much less constraining than the basic method and should significantly improve the results
-  // descl2 = ``advanced``, an `even more advanced method <https://github.com/microsoft/LightGBM/files/3457826/PR-monotone-constraints-report.pdf>`__, which may slow the library. However, this method is even less constraining than the intermediate method and should again significantly improve the results
+  // descl2 = ``intermediate``, a `more advanced method <https://hal.archives-ouvertes.fr/hal-02862802/document>`__, which may slow the library very slightly. However, this method is much less constraining than the basic method and should significantly improve the results
+  // descl2 = ``advanced``, an `even more advanced method <https://hal.archives-ouvertes.fr/hal-02862802/document>`__, which may slow the library. However, this method is even less constraining than the intermediate method and should again significantly improve the results
   std::string monotone_constraints_method = "basic";
 
   // alias = monotone_splits_penalty, ms_penalty, mc_penalty
   // check = >=0.0
   // desc = used only if ``monotone_constraints`` is set
-  // desc = `monotone penalty <https://github.com/microsoft/LightGBM/files/3457826/PR-monotone-constraints-report.pdf>`__: a penalization parameter X forbids any monotone splits on the first X (rounded down) level(s) of the tree. The penalty applied to monotone splits on a given depth is a continuous, increasing function the penalization parameter
+  // desc = `monotone penalty <https://hal.archives-ouvertes.fr/hal-02862802/document>`__: a penalization parameter X forbids any monotone splits on the first X (rounded down) level(s) of the tree. The penalty applied to monotone splits on a given depth is a continuous, increasing function the penalization parameter
   // desc = if ``0.0`` (the default), no penalization is applied
   double monotone_penalty = 0.0;