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https://issues.apache.org/jira/browse/OPENNLP-547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18123227#comment-18123227
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ASF GitHub Bot commented on OPENNLP-547:
----------------------------------------
krickert commented on code in PR #1236:
URL: https://github.com/apache/opennlp/pull/1236#discussion_r4180907634
##########
opennlp-api/src/main/java/opennlp/tools/depparse/DependencyGraph.java:
##########
@@ -0,0 +1,238 @@
+/*
+ * 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 opennlp.tools.depparse;
+
+import java.io.Serial;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import opennlp.tools.commons.ThreadSafe;
+import opennlp.tools.util.ArgumentChecks;
+import opennlp.tools.util.StringUtil;
+
+/**
+ * An immutable dependency tree over one sentence: for every token, the index
of its head
+ * and the label of the relation to that head.
+ *
+ * <p>Token indices are zero-based positions in the sentence the graph was
built for.
+ * Exactly one token carries the head value {@link DependencyArc#ROOT_HEAD},
marking it as
+ * the sentence root. Instances are immutable and safe to share between
threads.</p>
+ *
+ * @since 3.0.0
+ */
+@ThreadSafe
+public final class DependencyGraph implements Serializable {
Review Comment:
Done
> Add a dependency parser component
> ---------------------------------
>
> Key: OPENNLP-547
> URL: https://issues.apache.org/jira/browse/OPENNLP-547
> Project: OpenNLP
> Issue Type: Wish
> Reporter: Jörn Kottmann
> Assignee: Kristian Rickert
> Priority: Major
> Fix For: 3.0.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> It would be nice to add a dependency parser component to OpenNLP.
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