SpiderStrategies · mattsgarlata · Nov 10, 2025 · Nov 10, 2025 · Nov 17, 2025
diff --git a/.github/workflows/maven-macos-aarch64.yml b/.github/workflows/maven-macos-aarch64.yml
@@ -1,7 +1,7 @@
 # This workflow will build a Java project with Maven
 # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
 
-name: Tribuo CI (macOS aarch64, Java SE 17, 21, 24)
+name: Tribuo CI (macOS aarch64, Java SE 17, 21, 25)
 
 on:
   push:
@@ -15,12 +15,14 @@ jobs:
     strategy:
       matrix:
         # test against supported LTS versions and latest
-        java: [ 21, 24 ]
+        java: [ 21, 25 ]
     name: macOS aarch64 Java SE ${{ matrix.java }}
     steps:
       - uses: actions/checkout@v4
+      - name: Install libomp for XGBoost
+        run: brew install libomp
       - name: Setup Oracle Java SE
-        uses: oracle-actions/setup-java@v1.4.1
+        uses: oracle-actions/setup-java@v1.5.0
         with:
           website: oracle.com
           release: ${{ matrix.java }}
@@ -31,6 +33,8 @@ jobs:
     name: macOS aarch64 Java SE 17
     steps:
       - uses: actions/checkout@v4
+      - name: Install libomp for XGBoost
+        run: brew install libomp
       - name: Setup Oracle Java SE
         uses: oracle-actions/setup-java@v1.4.1
         with:

diff --git a/.github/workflows/maven-macos-x64.yml b/.github/workflows/maven-macos-x64.yml
@@ -1,7 +1,7 @@
 # This workflow will build a Java project with Maven
 # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
 
-name: Tribuo CI (macOS x86_64, Java SE 17, 21, 24)
+name: Tribuo CI (macOS x86_64, Java SE 17, 21, 25)
 
 on:
   push:
@@ -15,12 +15,14 @@ jobs:
     strategy:
       matrix:
         # test against supported LTS versions and latest
-        java: [ 21, 24 ]
+        java: [ 21, 25 ]
     name: macOS x86_64 Java SE ${{ matrix.java }}
     steps:
       - uses: actions/checkout@v4
+      - name: Install libomp for XGBoost
+        run: brew install libomp
       - name: Setup Oracle Java SE
-        uses: oracle-actions/setup-java@v1.4.1
+        uses: oracle-actions/setup-java@v1.5.0
         with:
           website: oracle.com
           release: ${{ matrix.java }}
@@ -31,6 +33,8 @@ jobs:
     name: macOS x86_64 Java SE 17
     steps:
       - uses: actions/checkout@v4
+      - name: Install libomp for XGBoost
+        run: brew install libomp
       - name: Setup Oracle Java SE
         uses: oracle-actions/setup-java@v1.4.1
         with:

diff --git a/.github/workflows/maven-ubuntu-aarch64.yml b/.github/workflows/maven-ubuntu-aarch64.yml
@@ -0,0 +1,28 @@
+# This workflow will build a Java project with Maven
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+
+name: Tribuo CI (Ubuntu aarch64, Java SE 21, 25)
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04-arm
+    strategy:
+      matrix:
+        # test against supported LTS versions and latest
+        java: [ 21, 25 ]
+    name: Ubuntu Java SE ${{ matrix.java }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Oracle Java SE
+        uses: oracle-actions/setup-java@v1.5.0
+        with:
+          website: oracle.com
+          release: ${{ matrix.java }}
+      - name: Build with Maven
+        run: mvn -B package --file pom.xml -Parm
diff --git a/.github/workflows/maven-ubuntu.yml → .github/workflows/maven-ubuntu-x64.yml b/.github/workflows/maven-ubuntu.yml → .github/workflows/maven-ubuntu-x64.yml
@@ -1,7 +1,7 @@
 # This workflow will build a Java project with Maven
 # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
 
-name: Tribuo CI (Ubuntu x86_64, Java SE 17, 21, 24)
+name: Tribuo CI (Ubuntu x86_64, Java SE 17, 21, 25)
 
 on:
   push:
@@ -15,12 +15,12 @@ jobs:
     strategy:
       matrix:
         # test against supported LTS versions and latest
-        java: [ 21, 24 ]
+        java: [ 21, 25 ]
     name: Ubuntu Java SE ${{ matrix.java }}
     steps:
       - uses: actions/checkout@v4
       - name: Setup Oracle Java SE
-        uses: oracle-actions/setup-java@v1.4.1
+        uses: oracle-actions/setup-java@v1.5.0
         with:
           website: oracle.com
           release: ${{ matrix.java }}

diff --git a/.github/workflows/maven-windows.yml b/.github/workflows/maven-windows.yml
@@ -1,7 +1,7 @@
 # This workflow will build a Java project with Maven
 # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
 
-name: Tribuo CI (Windows x86_64, Java SE 17, 21, 24)
+name: Tribuo CI (Windows x86_64, Java SE 17, 21, 25)
 
 on:
   push:
@@ -15,12 +15,12 @@ jobs:
     strategy:
       matrix:
         # test against supported LTS versions and latest
-        java: [ 21, 24 ]
+        java: [ 21, 25 ]
     name: Windows Java SE ${{ matrix.java }}
     steps:
       - uses: actions/checkout@v4
       - name: Setup Oracle Java SE
-        uses: oracle-actions/setup-java@v1.4.1
+        uses: oracle-actions/setup-java@v1.5.0
         with:
           website: oracle.com
           release: ${{ matrix.java }}

diff --git a/AnomalyDetection/pom.xml b/AnomalyDetection/pom.xml
@@ -65,42 +65,4 @@
         </dependencies>
     </dependencyManagement>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.3.1</version>
-                <configuration>
-                    <show>protected</show>
-                    <failOnError>false</failOnError>
-                    <linksource>true</linksource>
-                    <nohelp>true</nohelp>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>3.2.0</version>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.13.0</version>
-                <configuration>
-                    <release>${tribuo.java.version}</release>
-                    <testRelease>${tribuo.java.version}</testRelease>
-                    <compilerArgument>
-                        -Xlint:all
-                    </compilerArgument>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-assembly-plugin</artifactId>
-                <version>3.3.0</version>
-            </plugin>
-        </plugins>
-    </build>
-
 </project>
diff --git a/...cisionTree/src/test/java/org/tribuo/classification/dtree/TestClassificationEnsembles.java b/...cisionTree/src/test/java/org/tribuo/classification/dtree/TestClassificationEnsembles.java
@@ -127,6 +127,29 @@ public Model<Label> testBagging(Pair<Dataset<Label>,Dataset<Label>> p) {
         return m;
     }
 
+    /**
+     * Tests parallel bagging with 2 threads to exercise the parallel training
+     * codepath.
+     * @param p The train/test dataset pair.
+     * @return The trained model.
+     */
+    public Model<Label> testBaggingParallel(
+            Pair<Dataset<Label>,Dataset<Label>> p) {
+        BaggingTrainer<Label> parallelBagT = new BaggingTrainer<>(t,
+                new VotingCombiner(), 10, Trainer.DEFAULT_SEED, 2);
+        Model<Label> m = parallelBagT.train(p.getA());
+        LabelEvaluator e = new LabelEvaluator();
+        LabelEvaluation evaluation = e.evaluate(m,p.getB());
+        Map<String, List<Pair<String,Double>>> features =
+                m.getTopFeatures(3);
+        Assertions.assertNotNull(features);
+        Assertions.assertFalse(features.isEmpty());
+        features = m.getTopFeatures(-1);
+        Assertions.assertNotNull(features);
+        Assertions.assertFalse(features.isEmpty());
+        return m;
+    }
+
     public Model<Label> testRandomForest(Pair<Dataset<Label>,Dataset<Label>> p) {
         Model<Label> m = rfT.train(p.getA());
         LabelEvaluator e = new LabelEvaluator();
@@ -163,6 +186,9 @@ public void testDenseData() {
         Model<Label> bag = testBagging(p);
         Helpers.testModelProtoSerialization(bag,Label.class);
 
+        Model<Label> parallelBag = testBaggingParallel(p);
+        Helpers.testModelProtoSerialization(parallelBag,Label.class);
+
         Model<Label> rf = testRandomForest(p);
         Helpers.testModelProtoSerialization(rf,Label.class);
 
@@ -175,6 +201,7 @@ public void testSparseData() {
         Pair<Dataset<Label>,Dataset<Label>> p = LabelledDataGenerator.sparseTrainTest();
         testAdaBoost(p);
         testBagging(p);
+        testBaggingParallel(p);
         testRandomForest(p);
         testExtraTrees(p);
     }
@@ -184,6 +211,7 @@ public void testSparseBinaryData() {
         Pair<Dataset<Label>,Dataset<Label>> p = LabelledDataGenerator.binarySparseTrainTest();
         testAdaBoost(p);
         testBagging(p);
+        testBaggingParallel(p);
         testRandomForest(p);
         testExtraTrees(p);
     }

diff --git a/Classification/XGBoost/src/test/java/org/tribuo/classification/xgboost/TestXGBoost.java b/Classification/XGBoost/src/test/java/org/tribuo/classification/xgboost/TestXGBoost.java
@@ -243,7 +243,6 @@ public void testDenseData() {
         Map<String,Object> overrideParams = new HashMap<>();
         overrideParams.put("objective","multi:softprob");
         overrideParams.put("eta","0.1");
-        overrideParams.put("sampling_method","gradient_based");
         XGBoostClassificationTrainer overrideTrainer = new XGBoostClassificationTrainer(5, overrideParams);
         XGBoostModel<Label> overrideM = testXGBoost(overrideTrainer,p);
 
@@ -253,7 +252,6 @@ public void testDenseData() {
         assertEquals(overrideParams.size(), overrideMap.size());
         assertEquals(overrideParams.get("objective"), overrideMap.get("objective").getValue());
         assertEquals(overrideParams.get("eta"), overrideMap.get("eta").getValue());
-        assertEquals(overrideParams.get("sampling_method"), overrideMap.get("sampling_method").getValue());
     }
 
     @Test

diff --git a/Classification/pom.xml b/Classification/pom.xml
@@ -72,42 +72,4 @@
         </dependencies>
     </dependencyManagement>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.3.1</version>
-                <configuration>
-                    <show>protected</show>
-                    <failOnError>false</failOnError>
-                    <linksource>true</linksource>
-                    <nohelp>true</nohelp>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>3.2.0</version>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.13.0</version>
-                <configuration>
-                    <release>${tribuo.java.version}</release>
-                    <testRelease>${tribuo.java.version}</testRelease>
-                    <compilerArgument>
-                        -Xlint:all
-                    </compilerArgument>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-assembly-plugin</artifactId>
-                <version>3.3.0</version>
-            </plugin>
-        </plugins>
-    </build>
-
 </project>
diff --git a/Clustering/pom.xml b/Clustering/pom.xml
@@ -66,42 +66,4 @@
         </dependencies>
     </dependencyManagement>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.3.1</version>
-                <configuration>
-                    <show>protected</show>
-                    <failOnError>false</failOnError>
-                    <linksource>true</linksource>
-                    <nohelp>true</nohelp>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>3.2.0</version>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.13.0</version>
-                <configuration>
-                    <release>${tribuo.java.version}</release>
-                    <testRelease>${tribuo.java.version}</testRelease>
-                    <compilerArgument>
-                        -Xlint:all
-                    </compilerArgument>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-assembly-plugin</artifactId>
-                <version>3.3.0</version>
-            </plugin>
-        </plugins>
-    </build>
-
 </project>
diff --git a/Common/XGBoost/pom.xml b/Common/XGBoost/pom.xml
@@ -73,6 +73,10 @@
                     <groupId>org.scala-lang.modules</groupId>
                     <artifactId>scala-java8-compat_2.12</artifactId>
                 </exclusion>
+                <exclusion>
+                    <groupId>org.scala-lang.modules</groupId>
+                    <artifactId>scala-collection-compat_2.12</artifactId>
+                </exclusion>
                 <exclusion>
                     <groupId>org.scala-lang</groupId>
                     <artifactId>scala-compiler</artifactId>

diff --git a/Common/XGBoost/src/main/java/org/tribuo/common/xgboost/XGBoostExternalModel.java b/Common/XGBoost/src/main/java/org/tribuo/common/xgboost/XGBoostExternalModel.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2025, Oracle and/or its affiliates. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -229,7 +229,7 @@ public Map<String, List<Pair<String, Double>>> getTopFeatures(int n) {
                 }
             }
             List<Pair<String,Double>> list = new ArrayList<>();
-            while(q.size() > 0) {
+            while(!q.isEmpty()) {
                 list.add(q.poll());
             }
             Collections.reverse(list);
@@ -255,7 +255,7 @@ public ModelProto serialize() {
             Collectors.toList()));
         modelBuilder.addAllBackwardFeatureMapping(Arrays.stream(featureBackwardMapping).boxed().collect(Collectors.toList()));
         try {
-            modelBuilder.setModel(ByteString.copyFrom(model.toByteArray()));
+            modelBuilder.setModel(ByteString.copyFrom(model.toByteArray("ubj")));
         } catch (XGBoostError e) {
             throw new IllegalStateException("Failed to serialize XGBoost model");
         }