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diff --git a/src/main/java/org/apache/commons/math3/optim/OptimizationProblem.java b/src/main/java/org/apache/commons/math3/optim/OptimizationProblem.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.math3.optim;
+
+import org.apache.commons.math3.util.Incrementor;
+
+/**
+ * Common settings for all optimization problems. Includes divergence and convergence criteria.
+ *
+ * @param <PAIR> The type of value the {@link #getConvergenceChecker() convergence checker} will
+ *     operate on. It should include the value of the model function and point where it was
+ *     evaluated.
+ * @since 3.3
+ */
+public interface OptimizationProblem<PAIR> {
+    /**
+     * Get a independent Incrementor that counts up to the maximum number of evaluations and then
+     * throws an exception.
+     *
+     * @return a counter for the evaluations.
+     */
+    Incrementor getEvaluationCounter();
+
+    /**
+     * Get a independent Incrementor that counts up to the maximum number of iterations and then
+     * throws an exception.
+     *
+     * @return a counter for the evaluations.
+     */
+    Incrementor getIterationCounter();
+
+    /**
+     * Gets the convergence checker.
+     *
+     * @return the object used to check for convergence.
+     */
+    ConvergenceChecker<PAIR> getConvergenceChecker();
+}