How to Select Index Parameters for IVF Index nprobe is the number of buckets in step one. When searching using indexes, the first step is to find a certain number of buckets closest to the target vector and the second step is to find the most similar k vectors from the buckets by vector distance. Look at the article linked below to learn more about setting nprobe. Our function will return article URLs.Įvery search requires the metric type and the nprobe parameter. Second, we use the query vector to find the top 3 most relevant articles. First, we pass the question to the get_embeddings function to generate a search vector. We start with the question received from the user. How to search for relevant text in a vector database We return the final answer with the links to articles used to produce it.We take those three summaries and pass them to GPT-3 again to produce the final answer.We retrieve the top 3 articles and pass their content to GPT-3 to summarize.Whenever we receive a message, we search for the answer in our vector database.Let’s switch our role to MLOps engineer and write the code around AI. How to answer questions using GPT-3 and text embeddings When we have all of the required information, we can create the collection:Īrticle_collection. If you don’t want to worry about URL length, I suggest assigning a UUID to every article and storing the identifiers in Milvus. I will set the varchar length to an arbitrary value. The problem with varchar is that we need to know the maximum length of the text. Right now, Milvus supports varchar fields for storing text values. However, we would like to add a link to the relevant document when we answer a question, so we should store an URL, too. Its value won’t matter to us we will generate primary keys while uploading the data. Milvus uses the concept of primary keys, so we will need a primary key too. From the OpenAI documentation, we know the size of embeddings - it’s a vector of 1536 numbers. We must figure out the dimensions of the vector. The collection has a predefined schema, so we need to think about the information we want to store. First, we connect to the database:įrom pymilvus import ( connections, utility, FieldSchema, CollectionSchema, DataType, Collection, ) connections. If not, look at the Getting Started guide and the administrator documentation for Milvus.īefore we start, we need to create a collection in the Milvus database and add an index for our embeddings. I assume you have already set up the database server and have its address. In the end, we will have an AI-powered Facebook chatbot answering programming questions using articles from this blog: AI-powered Facebook Chatbot How to setup a Milvus vector database for text search
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