Updating FineTuning API including DPO

src/main/java/io/github/sashirestela/openai/domain/finetuning/FineTuning.java

@@ -31,6 +31,7 @@ public class FineTuning {
     private List<Integration> integrations;
     private Integer seed;
     private Integer estimatedFinish;
+    private MethodFineTunning method;
 
     @NoArgsConstructor
     @Getter

src/main/java/io/github/sashirestela/openai/domain/finetuning/FineTuningRequest.java

@@ -25,6 +25,11 @@ public class FineTuningRequest {
 
     private String validationFile;
 
+    /**
+     * @deprecated OpenAI has deperecated this field in favor of method, and should be passed in under
+     *             the method parameter.
+     */
+    @Deprecated(since = "3.12.0", forRemoval = true)
     private HyperParams hyperparameters;
 
     private String suffix;
@@ -34,4 +39,6 @@ public class FineTuningRequest {
 
     private Integer seed;
 
+    private MethodFineTunning method;
+
 }

src/main/java/io/github/sashirestela/openai/domain/finetuning/HyperParams.java

@@ -21,6 +21,10 @@
 @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
 public class HyperParams {
 
+    @ObjectType(baseClass = Integer.class)
+    @ObjectType(baseClass = String.class)
+    private Object beta;
+
     @ObjectType(baseClass = Integer.class)
     @ObjectType(baseClass = String.class)
     private Object batchSize;

src/main/java/io/github/sashirestela/openai/domain/finetuning/MethodFineTunning.java

@@ -0,0 +1,77 @@
+package io.github.sashirestela.openai.domain.finetuning;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@Getter
+@ToString
+@NoArgsConstructor
+@JsonInclude(Include.NON_EMPTY)
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+public class MethodFineTunning {
+
+    private MethodType type;
+    private Supervised supervised;
+    private Dpo dpo;
+
+    private MethodFineTunning(MethodType type, Supervised supervised, Dpo dpo) {
+        this.type = type;
+        this.supervised = supervised;
+        this.dpo = dpo;
+    }
+
+    public static MethodFineTunning supervised(HyperParams hyperParameters) {
+        return new MethodFineTunning(MethodType.SUPERVISED, new Supervised(hyperParameters), null);
+    }
+
+    public static MethodFineTunning dpo(HyperParams hyperParameters) {
+        return new MethodFineTunning(MethodType.DPO, null, new Dpo(hyperParameters));
+    }
+
+    public enum MethodType {
+
+        @JsonProperty("supervised")
+        SUPERVISED,
+
+        @JsonProperty("dpo")
+        DPO;
+
+    }
+
+    @Getter
+    @ToString
+    @NoArgsConstructor
+    @JsonInclude(Include.NON_EMPTY)
+    @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+    public static class Supervised {
+
+        HyperParams hyperParameters;
+
+        public Supervised(HyperParams hyperParameters) {
+            this.hyperParameters = hyperParameters;
+        }
+
+    }
+
+    @Getter
+    @ToString
+    @NoArgsConstructor
+    @JsonInclude(Include.NON_EMPTY)
+    @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+    public static class Dpo {
+
+        HyperParams hyperParameters;
+
+        public Dpo(HyperParams hyperParameters) {
+            this.hyperParameters = hyperParameters;
+        }
+
+    }
+
+}

src/test/java/io/github/sashirestela/openai/domain/finetuning/FineTuningDomainTest.java

@@ -31,17 +31,43 @@ static void setup() {
     }
 
     @Test
-    void testFineTuningsCreate() throws IOException {
+    void testFineTuningsCreateDpo() throws IOException {
         DomainTestingHelper.get().mockForObject(httpClient, "src/test/resources/finetunings_create.json");
         var fineTuningRequest = FineTuningRequest.builder()
                 .trainingFile("fileId")
                 .validationFile("fileId")
                 .model("gpt-3.5-turbo-1106")
-                .hyperparameters(HyperParams.builder()
+                .suffix("suffix")
+                .integration(Integration.builder()
+                        .type(IntegrationType.WANDB)
+                        .wandb(WandbIntegration.builder()
+                                .project("my-wandb-project")
+                                .name("ft-run-display-name")
+                                .entity("testing")
+                                .tag("first-experiment")
+                                .tag("v2")
+                                .build())
+                        .build())
+                .seed(99)
+                .method(MethodFineTunning.dpo(HyperParams.builder()
+                        .beta("auto")
                         .batchSize("auto")
                         .learningRateMultiplier("auto")
                         .nEpochs("auto")
-                        .build())
+                        .build()))
+                .build();
+        var fineTuningResponse = openAI.fineTunings().create(fineTuningRequest).join();
+        System.out.println(fineTuningResponse);
+        assertNotNull(fineTuningResponse);
+    }
+
+    @Test
+    void testFineTuningsCreateSupervised() throws IOException {
+        DomainTestingHelper.get().mockForObject(httpClient, "src/test/resources/finetunings_create.json");
+        var fineTuningRequest = FineTuningRequest.builder()
+                .trainingFile("fileId")
+                .validationFile("fileId")
+                .model("gpt-3.5-turbo-1106")
                 .suffix("suffix")
                 .integration(Integration.builder()
                         .type(IntegrationType.WANDB)
@@ -54,6 +80,11 @@ void testFineTuningsCreate() throws IOException {
                                 .build())
                         .build())
                 .seed(99)
+                .method(MethodFineTunning.supervised(HyperParams.builder()
+                        .batchSize("auto")
+                        .learningRateMultiplier("auto")
+                        .nEpochs("auto")
+                        .build()))
                 .build();
         var fineTuningResponse = openAI.fineTunings().create(fineTuningRequest).join();
         System.out.println(fineTuningResponse);

src/test/resources/finetunings_create.json

@@ -1 +1 @@
-{ "object": "fine_tuning.job", "id": "ftjob-35j8EBrZVsuyFFe2OD8Tkmvd", "model": "gpt-3.5-turbo-1106", "created_at": 1700533111, "finished_at": null, "fine_tuned_model": null, "organization_id": "org-4WdgDKZ75eLPEH6zqX5hFd5e", "result_files": [], "status": "validating_files", "validation_file": null, "training_file": "file-0e5BDWQYA1KsguTJRCCXqAa2", "hyperparameters": { "n_epochs": "auto", "batch_size": "auto", "learning_rate_multiplier": "auto" }, "trained_tokens": null, "error": null, "integrations":[{"type":"wandb","wandb":{"project":"my-wandb-project","name":"ft-run-display-name","tags":["first-experiment","v2"]}}], "seed": 99 }
+{"object":"fine_tuning.job","id":"ftjob-35j8EBrZVsuyFFe2OD8Tkmvd","model":"gpt-3.5-turbo-1106","created_at":1700533111,"finished_at":null,"fine_tuned_model":null,"organization_id":"org-4WdgDKZ75eLPEH6zqX5hFd5e","result_files":[],"status":"validating_files","validation_file":null,"training_file":"file-0e5BDWQYA1KsguTJRCCXqAa2","trained_tokens":null,"error":null,"integrations":[{"type":"wandb","wandb":{"project":"my-wandb-project","name":"ft-run-display-name","tags":["first-experiment","v2"]}}],"seed":99,"method":{"type":"supervised","supervised":{"hyperparameters":{"batch_size":"auto","learning_rate_multiplier":"auto","n_epochs":"auto"}}}}