See the Similarity: Personalizing Visual Search with Multimodal Embeddings

Learn how to build a visual search tool using Google's Multimodal Embeddings API and explore how to apply this technology for searching images, slides, and more.

Anthony Tripaldi
10 min readintermediate
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Overview

The article discusses the use of multimodal embeddings to enhance visual search capabilities, particularly for artists and enterprise-scale document search. It covers the implementation of vector embeddings, practical applications, and comparisons between different search technologies.

What You'll Learn

1

How to utilize the Multimodal Embeddings API for visual search applications

2

Why multimodal embeddings are essential for understanding relationships in data

3

When to choose Vertex AI over Firebase for large-scale vector search

Prerequisites & Requirements

  • Basic understanding of vector embeddings and their applications
  • Familiarity with Firebase and Vertex AI(optional)

Key Questions Answered

What are vector embeddings and how are they used?
Vector embeddings are mathematical representations of real-world data like text, images, or audio, allowing computers to understand relationships in that data. They transform data into multidimensional points, facilitating tasks such as semantic understanding in natural language processing.
How can artists benefit from multimodal embeddings?
Artists can use multimodal embeddings to manage and search their work based on visual similarity or conceptual keywords, overcoming limitations of traditional file organization methods. This technology allows for intuitive searches that align with their creative processes.
What is the difference between KNN and ScaNN in vector search?
KNN (K-nearest neighbors) is a brute force algorithm that scales linearly with the number of documents, leading to slower performance as datasets grow. In contrast, ScaNN (Scalable Approximate Nearest Neighbor) uses intelligent indexing for faster searches, making it more suitable for large-scale applications.
What are the steps to implement vector search with Vertex AI?
To implement vector search with Vertex AI, you must create an index for your embeddings, deploy it to an endpoint, and then query the index with your embedding. This allows for efficient searching across large datasets, leveraging Google's advanced search technology.

Key Statistics & Figures

Number of slides processed
775,000
This number reflects the total slides processed for the enterprise-scale document search using the Multimodal Embeddings API.
Number of presentations
16,000
The embeddings were generated from over 16,000 presentations, showcasing the scale of the dataset handled.
Embedding dimension
1408
Each image embedding generated was a 1408-dimensional float array, providing rich contextual information.

Technologies & Tools

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API
Multimodal Embeddings API
Used to generate embeddings for text, images, and video.
Backend
Firebase
Utilized for storing and searching embeddings in smaller-scale applications.
Backend
Vertex AI
Employed for large-scale vector search capabilities.
Algorithm
Scann
A highly efficient vector similarity search algorithm used in Vertex AI.

Key Actionable Insights

1
Leverage the Multimodal Embeddings API to enhance your visual search capabilities.
This API allows you to represent various data types in a shared vector space, making it easier to uncover relationships and improve search functionalities in applications.
2
Consider using ScaNN for large-scale vector searches to improve performance.
ScaNN is designed for efficiency and can handle billions of documents quickly, making it ideal for enterprise applications where speed is critical.
3
Utilize Firebase for smaller projects where ease of use is a priority.
Firebase offers a straightforward implementation for vector search, making it suitable for developers who are starting with embeddings and do not require the scalability of Vertex AI.

Common Pitfalls

1
Relying solely on KNN for large datasets can lead to performance issues.
As the dataset grows, KNN's linear scaling can slow down search times significantly. To mitigate this, consider implementing pre-filtering steps or transitioning to more efficient algorithms like ScaNN.

Related Concepts

Vector Embeddings And Their Applications In AI/ML
Natural Language Processing Techniques
Semantic Search And Its Importance In Data Retrieval