feat: text extraction sample for Vertex LLMs

ai-platform/snippets/predict-text-extraction.js

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+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed 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
+ *
+ *     https://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.
+ */
+
+'use strict';
+
+async function main(project, location = 'us-central1') {
+  // [START aiplatform_sdk_extraction]
+  /**
+   * TODO(developer): Uncomment these variables before running the sample.\
+   * (Not necessary if passing values as arguments)
+   */
+  // const project = 'YOUR_PROJECT_ID';
+  // const location = 'YOUR_PROJECT_LOCATION';
+  const aiplatform = require('@google-cloud/aiplatform');
+
+  // Imports the Google Cloud Prediction service client
+  const {PredictionServiceClient} = aiplatform.v1;
+
+  // Import the helper module for converting arbitrary protobuf.Value objects.
+  const {helpers} = aiplatform;
+
+  // Specifies the location of the api endpoint
+  const clientOptions = {
+    apiEndpoint: 'us-central1-aiplatform.googleapis.com',
+  };
+
+  const publisher = 'google';
+  const model = 'text-bison@001';
+
+  // Instantiates a client
+  const predictionServiceClient = new PredictionServiceClient(clientOptions);
+
+  async function callPredict() {
+    // Configure the parent resource
+    const endpoint = `projects/${project}/locations/${location}/publishers/${publisher}/models/${model}`;
+
+    const instance = {
+      content: `Background: There is evidence that there have been significant changes \
+    in Amazon rainforest vegetation over the last 21,000 years through the Last \
+    Glacial Maximum (LGM) and subsequent deglaciation. Analyses of sediment \
+    deposits from Amazon basin paleo lakes and from the Amazon Fan indicate that \
+    rainfall in the basin during the LGM was lower than for the present, and this \
+    was almost certainly associated with reduced moist tropical vegetation cover \
+    in the basin. There is debate, however, over how extensive this reduction \
+    was. Some scientists argue that the rainforest was reduced to small, isolated \
+    refugia separated by open forest and grassland; other scientists argue that \
+    the rainforest remained largely intact but extended less far to the north, \
+    south, and east than is seen today. This debate has proved difficult to \
+    resolve because the practical limitations of working in the rainforest mean \
+    that data sampling is biased away from the center of the Amazon basin, and \
+    both explanations are reasonably well supported by the available data.
+    
+    Q: What does LGM stands for?
+    A: Last Glacial Maximum.
+    
+    Q: What did the analysis from the sediment deposits indicate?
+    A: Rainfall in the basin during the LGM was lower than for the present.
+    
+    Q: What are some of scientists arguments?
+    A: The rainforest was reduced to small, isolated refugia separated by open forest and grassland.
+    
+    Q: There have been major changes in Amazon rainforest vegetation over the last how many years?
+    A: 21,000.
+    
+    Q: What caused changes in the Amazon rainforest vegetation?
+    A: The Last Glacial Maximum (LGM) and subsequent deglaciation
+    
+    Q: What has been analyzed to compare Amazon rainfall in the past and present?
+    A: Sediment deposits.
+    
+    Q: What has the lower rainfall in the Amazon during the LGM been attributed to?
+    A:
+    `,
+    };
+    const instanceValue = helpers.toValue(instance);
+    const instances = [instanceValue];
+
+    const parameter = {
+      temperature: 0.2,
+      maxOutputTokens: 256,
+      topP: 0,
+      topK: 1,
+    };
+    const parameters = helpers.toValue(parameter);
+
+    const request = {
+      endpoint,
+      instances,
+      parameters,
+    };
+
+    // Predict request
+    const [response] = await predictionServiceClient.predict(request);
+    console.log('Get text extraction response');
+    const predictions = response.predictions;
+    console.log('\tPredictions :');
+    for (const prediction of predictions) {
+      console.log(`\t\tPrediction : ${JSON.stringify(prediction)}`);
+    }
+  }
+
+  callPredict();
+  // [END aiplatform_sdk_extraction]
+}
+
+process.on('unhandledRejection', err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
+
+main(...process.argv.slice(2));

ai-platform/snippets/test/predict-text-extraction.test.js

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+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed 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
+ *
+ *     https://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.
+ */
+
+'use strict';
+
+const path = require('path');
+const {assert} = require('chai');
+const {describe, it} = require('mocha');
+
+const cp = require('child_process');
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const cwd = path.join(__dirname, '..');
+
+const project = process.env.CAIP_PROJECT_ID;
+const location = 'us-central1';
+
+describe('AI platform predict text extraction', () => {
+  it('should make predictions using a large language model', async () => {
+    const stdout = execSync(
+      `node ./predict-text-extraction.js ${project} ${location}`,
+      {
+        cwd,
+      }
+    );
+    assert.match(stdout, /Get text extraction response/);
+  });
+});