PaLM REST API: Краткое руководство

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Если вы хотите быстро опробовать PaLM API, вы можете использовать команды Curl для вызова методов REST API. В следующих примерах показаны вызовы каждого метода API. Для каждой команды Curl необходимо указать имя модели и ключ API. См. страницу получения ключа API, если у вас его еще нет.

"""
Add your API key and run this cell to set the PALM_API_KEY variable if
running in Colab.
(In a terminal you can just run PALM_API_KEY=<your API key>)
"""

import os
os.environ['PALM_API_KEY'] = ""

Создать текст

Используйте generate_text , чтобы сгенерировать ответ модели на входное сообщение.

!curl https://generativelanguage.googleapis.com/v1beta2/models/text-bison-001:generateText?key=$PALM_API_KEY \
    -H 'Content-Type: application/json' \
    -X POST \
    -d '{ \
        "prompt": { \
              "text": "Write a story about a magic backpack." \
              } \
          }'
{
  "candidates": [
    {
      "output": "Once upon a time, there was a young girl named Lily who loved to explore. She would spend hours wandering through the forest near her house, looking for new and exciting things. One day, Lily was exploring a particularly dense part of the forest when she came across a strange backpack. It was sitting on a rock, and it looked like it had been abandoned.\n\nLily picked up the backpack and examined it. It was made of a strange, silvery material that she had never seen before. There were no zippers or buttons, but the backpack seemed to be open. Lily reached inside, and she was surprised to find that it was full of all sorts of amazing things.\n\nThere were books that could tell her anything she wanted to know, tools that could fix anything she broke, and clothes that could keep her warm or cool no matter what the weather. Lily was amazed by the backpack's contents, and she knew that she had found something truly special.\n\nLily decided to take the backpack home with her, and she quickly discovered that it was even more magical than she had thought. The backpack could transport her to any place she wanted to go, and it could provide her with anything she needed. Lily used the backpack to travel the world, and she had many amazing adventures.\n\nOne day, Lily was using the backpack to explore a new planet when she came across a group of people who were in trouble. The people were being held captive by a cruel wizard, and Lily knew that she had to help them. She used the backpack to create a distraction, and then she rescued the people and led them to safety.\n\nThe people were so grateful to Lily for saving them, and they told her that she was a true hero. Lily was happy to have helped, and she knew that she would continue to use the backpack to help others in need.\n\nLily's magic backpack continued to accompany her on many more adventures. She used it to help people in need, to explore new worlds, and to learn about all sorts of amazing things. Lily's backpack was a constant source of joy and inspiration, and she was grateful for the many ways that it had enriched her life.",
      "safetyRatings": [
        {
          "category": "HARM_CATEGORY_DEROGATORY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_TOXICITY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_VIOLENCE",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_SEXUAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_MEDICAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_DANGEROUS",
          "probability": "NEGLIGIBLE"
        }
      ]
    }
  ]
}

В следующем примере указаны значения для всех параметров generate_text .

!curl https://generativelanguage.googleapis.com/v1beta2/models/text-bison-001:generateText?key=$PALM_API_KEY \
        -H 'Content-Type: application/json' \
        -X POST \
        -d '{ \
            "prompt": { \
                  "text": "Give an example of a title for a story about a magic backpack.  \
                           Title: " \
                  }, \
            "safetySettings": [ \
                { \
                    "category": "HARM_CATEGORY_TOXICITY", \
                    "threshold": "BLOCK_ONLY_HIGH" \
                } \
            ], \
            "stopSequences": [ \
                "Title" \
            ], \
            "temperature": 1.0, \
            "candidate_count": 3, \
            "maxOutputTokens": 800, \
            "topP": 0.8, \
            "topK": 10 \
            }'
{
  "candidates": [
    {
      "output": "The Backpack of Holding",
      "safetyRatings": [
        {
          "category": "HARM_CATEGORY_DEROGATORY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_TOXICITY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_VIOLENCE",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_SEXUAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_MEDICAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_DANGEROUS",
          "probability": "NEGLIGIBLE"
        }
      ]
    },
    {
      "output": "The Backpack of Holding",
      "safetyRatings": [
        {
          "category": "HARM_CATEGORY_DEROGATORY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_TOXICITY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_VIOLENCE",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_SEXUAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_MEDICAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_DANGEROUS",
          "probability": "NEGLIGIBLE"
        }
      ]
    },
    {
      "output": "The Backpack of Holding",
      "safetyRatings": [
        {
          "category": "HARM_CATEGORY_DEROGATORY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_TOXICITY",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_VIOLENCE",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_SEXUAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_MEDICAL",
          "probability": "NEGLIGIBLE"
        },
        {
          "category": "HARM_CATEGORY_DANGEROUS",
          "probability": "NEGLIGIBLE"
        }
      ]
    }
  ]
}

Значения параметров имеют следующее значение:

  • safetySettings : понизьте порог безопасности для токсичности, чтобы блокировать только весьма вероятные токсичные выходы.
  • stopSequences : используйте стоп-последовательность для создания только одного заголовка, останавливая вывод при следующем экземпляре Title .
  • temperature : установите температуру 1,0 при генерации ответов.
  • candidate_count : Возвращает только 3 ответа кандидата.
  • maxOutputTokens : возвращает максимум 800 токенов.
  • topP : учитывайте только верхние 80% токенов, возвращаемых моделью.
  • topK : при выборке учитывайте 10 лучших токенов.

Узнайте больше об этих параметрах в справочнике по API для generateText .

Создать сообщение

Используйте generateMessage чтобы сгенерировать ответ модели с учетом входного MessagePrompt .

!curl https://generativelanguage.googleapis.com/v1beta2/models/chat-bison-001:generateMessage?key=$PALM_API_KEY  \
  -H 'Content-Type: application/json' \
  -X POST \
  -d '{ \
      "prompt": {"messages": [{"content":"hi"}]} \
      }'
{
  "candidates": [
    {
      "author": "1",
      "content": "Hi! How can I help you today?"
    }
  ],
  "messages": [
    {
      "author": "0",
      "content": "hi"
    }
  ]
}

В следующем примере показан вызов с разными значениями параметров.

!curl  https://generativelanguage.googleapis.com/v1beta2/models/chat-bison-001:generateMessage?key=$PALM_API_KEY  \
        -H 'Content-Type: application/json' \
        -X POST \
        -d '{ \
            "prompt": {"messages": [{"content":"hi"}]}, \
            "temperature": 0.1, \
            "candidate_count": 1, \
            "topP": 0.8, \
            "topK": 10}'
{
  "candidates": [
    {
      "author": "1",
      "content": "Hi! How can I help you today?"
    }
  ],
  "messages": [
    {
      "author": "0",
      "content": "hi"
    }
  ]
}

Значения параметров имеют следующее значение:

  • temperature : установите температуру 0,1 при генерации ответов.
  • candidate_count : Возвращает только 1 ответ кандидата.
  • topP : учитывайте только верхние 80% токенов, возвращаемых моделью.
  • topK : при выборке учитывайте 10 лучших токенов.

Дополнительные сведения об этих параметрах см. в справочнике по API метода generateMessage .

Вставить текст

Используйте метод embedText для создания внедрения из модели с учетом входного сообщения.

!curl https://generativelanguage.googleapis.com/v1beta2/models/embedding-gecko-001:embedText?key=$PALM_API_KEY \
  -H 'Content-Type: application/json' \
  -X POST \
  -d '{"text": "say something nice!"}'
{
  "embedding": {
    "value": [
      0.0011238843,
      -0.040586308,
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  }
}

Подсчитайте токены сообщений

Используйте метод countMessageTokens , чтобы запустить токенизатор модели в строке приглашения сообщения и получить количество токенов.

!curl https://generativelanguage.googleapis.com/v1beta2/models/chat-bison-001:countMessageTokens?key=$PALM_API_KEY \
    -H 'Content-Type: application/json' \
    -X POST \
    -d '{ \
        "prompt": { \
            "messages": [ \
                {"content":"How many tokens?"}, \
                {"content":"For this whole conversation?"} \
            ] \
        } \
    }'
{
  "tokenCount": 23
}

Получить модель

Используйте метод get , чтобы получить информацию о конкретной модели, такую ​​как версия, отображаемое имя, лимит входных токенов и т. д.

curl https://generativelanguage.googleapis.com/v1beta2/models/text-bison-001?key=$PALM_API_KEY
{
  "name": "models/text-bison-001",
  "version": "001",
  "displayName": "Text Bison",
  "description": "Model targeted for text generation.",
  "inputTokenLimit": 8196,
  "outputTokenLimit": 1024,
  "supportedGenerationMethods": [
    "generateText"
  ],
  "temperature": 0.7,
  "topP": 0.95,
  "topK": 40
}

Список моделей

Используйте метод list , чтобы перечислить все модели, доступные через API PaLM.

curl https://generativelanguage.googleapis.com/v1beta2/models?key=$PALM_API_KEY
{
  "models": [
    {
      "name": "models/chat-bison-001",
      "version": "001",
      "displayName": "Chat Bison",
      "description": "Chat-optimized generative language model.",
      "inputTokenLimit": 4096,
      "outputTokenLimit": 1024,
      "supportedGenerationMethods": [
        "generateMessage",
        "countMessageTokens"
      ],
      "temperature": 0.25,
      "topP": 0.95,
      "topK": 40
    },
    {
      "name": "models/text-bison-001",
      "version": "001",
      "displayName": "Text Bison",
      "description": "Model targeted for text generation.",
      "inputTokenLimit": 8196,
      "outputTokenLimit": 1024,
      "supportedGenerationMethods": [
        "generateText"
      ],
      "temperature": 0.7,
      "topP": 0.95,
      "topK": 40
    },
    {
      "name": "models/embedding-gecko-001",
      "version": "001",
      "displayName": "Embedding Gecko",
      "description": "Obtain a distributed representation of a text.",
      "inputTokenLimit": 1024,
      "outputTokenLimit": 1,
      "supportedGenerationMethods": [
        "embedText"
      ]
    }
  ]
}