sayou-assembler 0.4.2

Assembler components for the Sayou Data Platform

sayou-assembler

Overview

The Knowledge Builder for Sayou Fabric.

sayou-assembler acts as the structural engineer of the pipeline. It accepts flat lists of SayouNode objects produced by the Wrapper and constructs meaningful relationships (Edges), embeddings, or specific query payloads.

While the Wrapper focuses on what the data is (Schema), the Assembler focuses on how the data connects (Topology).

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1. Architecture & Role

The Assembler takes standardized Nodes and applies a Building Strategy to generate a connected graph structure or vector payloads ready for loading.

graph LR
    Nodes[Flat SayouNodes] --> Pipeline[Assembler Pipeline]
    
    subgraph Builders
        Graph[General Graph]
        Code[Python AST]
        Time[Timeline]
        Vector[Embeddings]
        Cypher[Cypher Query]
    end
    
    Pipeline -->|Config Routing| Builders
    Builders --> Payload[Connected Payload]

1.1. Core Features

• Topology Construction: Automatically links nodes (e.g., Parent-Child, Function-Class) based on metadata.
• Domain Specificity: Dedicated builders for Python code analysis and Video timelines.
• Bi-directional Linking: Automatically generates reverse edges (e.g., contains <-> belongsTo) to ensure graph traversability.

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2. Available Strategies

sayou-assembler provides specialized builders for different data domains.

Strategy Key	Builder Class	Description
graph	GraphBuilder	[Default] Generic builder. Links nodes based on parent_id and generic relationships.
code	CodeGraphBuilder	[Code] Parses Python AST metadata to link Imports, Classes, and Methods.
timeline	TimelineBuilder	[Media] Sequences video segments or logs chronologically (NEXT, PREV).
vector	VectorBuilder	[Search] Converts node content into vector embeddings.
cypher	CypherBuilder	[DB] Generates Neo4j MERGE statements for idempotent inserts.

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3. Installation

pip install sayou-assembler

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4. Usage

The AssemblerPipeline is the entry point. It transforms SayouOutput (from Wrapper) into a dictionary containing nodes and edges.

Case A: General Graph Construction

The default strategy for general documents (PDF, Markdown).

from sayou.assembler import AssemblerPipeline

wrapper_output = {
    "nodes": [
        {"node_id": "doc:1", "node_class": "sayou:Document", "attributes": {...}},
        {"node_id": "doc:1:header", "attributes": {"meta:parent_id": "doc:1"}, ...}
    ]
}

graph_data = AssemblerPipeline.process(data=wrapper_output)

print(f"Nodes: {len(graph_data['nodes'])}, Edges: {len(graph_data['edges'])}")

Case B: Python Code Graph

Links functions to classes and resolves import dependencies.

from sayou.assembler import AssemblerPipeline

wrapper_output = {
    "nodes": [
        {"node_id": "doc:1", "node_class": "sayou:Document", "attributes": {...}},
        {"node_id": "doc:1:header", "attributes": {"meta:parent_id": "doc:1"}, ...}
    ]
}

code_graph = AssemblerPipeline.process(data=wrapper_output)

print(f"Dependency Edges: {len(code_graph['edges'])}")

Case C: Multimedia Timeline

Sequences video segments by time.

from sayou.assembler import AssemblerPipeline

wrapper_output = {
    "nodes": [
        {"node_id": "doc:1", "node_class": "sayou:Document", "attributes": {...}},
        {"node_id": "doc:1:header", "attributes": {"meta:parent_id": "doc:1"}, ...}
    ]
}

timeline_graph = AssemblerPipeline.process(data=wrapper_output)
print(f"Timeline Sequence Created.")

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5. Configuration Keys

You can customize the building process via the config dictionary.

• graph: create_reverse_edges (bool), default_edge_label.
• python: resolve_imports (bool), include_external_libs (bool).
• timeline: interval_threshold (float).
• vector: embedding_model (e.g., openai, huggingface), batch_size.
• cypher: merge_mode (bool), batch_size.

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6. License

Apache 2.0 License © 2026 Sayouzone