From 4c6ca23d3a90dc6320612b740ccbd59719ef3437 Mon Sep 17 00:00:00 2001
From: Ryan Curtin <ryan@ratml.org>
Date: Mon, 2 Jul 2018 09:44:11 -0400
Subject: [PATCH 1/2] Remove check that makes LCC unusable in some cases.

This check would mean that the user must pass either 'initial_dictionary' or
'input_model' to any call of the program.  This makes it impossible to run LCC
with a random initial dictionary.
---
 .../local_coordinate_coding/local_coordinate_coding_main.cpp     | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/mlpack/methods/local_coordinate_coding/local_coordinate_coding_main.cpp b/src/mlpack/methods/local_coordinate_coding/local_coordinate_coding_main.cpp
index f0ee7e6dc5..e0b8c29646 100644
--- a/src/mlpack/methods/local_coordinate_coding/local_coordinate_coding_main.cpp
+++ b/src/mlpack/methods/local_coordinate_coding/local_coordinate_coding_main.cpp
@@ -101,7 +101,6 @@ static void mlpackMain()
     RandomSeed((size_t) std::time(NULL));
 
   // Check for parameter validity.
-  RequireOnlyOnePassed({ "input_model", "initial_dictionary" }, true);
   RequireOnlyOnePassed({ "training", "input_model" }, true);
 
   if (CLI::HasParam("training"))

From 8d99b258ed3d0d28f3d9abe1322f82dccb10a38f Mon Sep 17 00:00:00 2001
From: Ryan Curtin <ryan@ratml.org>
Date: Mon, 2 Jul 2018 09:45:58 -0400
Subject: [PATCH 2/2] Document the fix.

---
 HISTORY.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/HISTORY.md b/HISTORY.md
index fc580bf68f..1b75266808 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -2,6 +2,9 @@
 ###### ????-??-??
   * Fix Visual Studio compilation issue (#1443).
 
+  * Allow running local_coordinate_coding binding with no initial_dictionary
+    parameter when input_model is not specified (#1457).
+
 ### mlpack 3.0.2
 ###### 2018-06-08
   * Documentation generation fixes for Python bindings (#1421).