> ## Documentation Index
> Fetch the complete documentation index at: https://dragonwingdocs.qualcomm.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary

> Definitions for acronyms, tools, and terminology used throughout the Qualcomm AI/ML Developer Workflow documentation for Dragonwing IoT platforms.

| **Term**                        | **Description**                                                                                                                                                                   |
| ------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| AI                              | Artificial Intelligence                                                                                                                                                           |
| AIMET                           | Qualcomm AI Model Efficiency Toolkit. Tools for improving quantized model accuracy, including PTQ and QAT workflows.                                                              |
| API                             | Application Programming Interface                                                                                                                                                 |
| ASR                             | Automatic Speech Recognition                                                                                                                                                      |
| Backend                         | The execution target selected by a runtime for inference, such as CPU, GPU, or NPU/HTP.                                                                                           |
| CPU                             | Central Processing Unit. A general-purpose processor used for application logic and, when needed, AI inference.                                                                   |
| CSV                             | Comma-Separated Value                                                                                                                                                             |
| Delegate                        | A runtime plug-in that offloads supported model operations from a framework (for example, LiteRT) to a hardware accelerator such as the NPU or GPU.                               |
| DL                              | Deep Learning                                                                                                                                                                     |
| DLC                             | Deep Learning Container                                                                                                                                                           |
| DSP                             | Digital Signal Processor                                                                                                                                                          |
| GenAI                           | Generative AI workloads (for example, text/image generation) typically powered by LLMs or multimodal models.                                                                      |
| GPU                             | Graphics Processing Unit. A parallel processor used for selected AI operations and for image/video pre- and post-processing tasks.                                                |
| HMX                             | Hexagon Matrix Extensions                                                                                                                                                         |
| HTA                             | Hexagon Tensor Accelerator                                                                                                                                                        |
| HTP                             | Hexagon Tensor Processor. Qualcomm's AI-optimized compute block used as the primary NPU target for efficient inference.                                                           |
| IM SDK                          | Qualcomm Intelligent Multimedia SDK for camera/video AI pipelines with zero-copy buffers and GPU-accelerated pre/post-processing.                                                 |
| Inference                       | Running a trained model to generate predictions or outputs from new input data.                                                                                                   |
| IOT                             | Internet Of Things                                                                                                                                                                |
| LiteRT                          | A lightweight runtime and model format for on-device inference, often used with delegates for hardware acceleration.                                                              |
| Llama.cpp                       | C/C++ library and CLI for running LLMs and VLMs locally on CPU/GPU using quantized GGUF models.                                                                                   |
| LLM                             | Large Language Model. A generative model trained on large text corpora for tasks such as chat, summarization, and coding assistance.                                              |
| ML                              | Machine Learning                                                                                                                                                                  |
| Multimodal                      | Models that process or generate across multiple data types, such as text + image or text + audio.                                                                                 |
| NDK                             | Native Development Kit                                                                                                                                                            |
| NN                              | Neural Network                                                                                                                                                                    |
| NPU                             | Neural Processing Unit. A specialized accelerator for running AI inference efficiently at low power (on Qualcomm platforms, typically the Hexagon HTP).                           |
| ONNX                            | Open Neural Network Exchange format used to represent and exchange trained models across frameworks and tools.                                                                    |
| OpenCL                          | Open Computing Language                                                                                                                                                           |
| PD                              | Process Domain                                                                                                                                                                    |
| PPA                             | Personal Package Archive                                                                                                                                                          |
| Preprocessing / Post-processing | Steps done before and after model inference, such as resize, normalization, decoding outputs, filtering, or drawing overlays.                                                     |
| PTQ                             | Post-Training Quantization. Quantizing a trained model without retraining.                                                                                                        |
| QAIRT                           | Qualcomm AI Runtime SDK. Toolchain and runtime stack used to convert, quantize, compile, and run AI models on Qualcomm platforms.                                                 |
| QAT                             | Quantization-Aware Training. Training or fine-tuning with quantization effects simulated to preserve accuracy after quantization.                                                 |
| QNN                             | Qualcomm Neural Network (a synonym for Qualcomm® AI Engine Direct)                                                                                                                |
| QTI                             | Qualcomm Technologies Incorporated                                                                                                                                                |
| Quantization                    | Converting model weights/activations from higher-precision data types (for example, FP32) to lower-precision types (such as INT8) to improve performance and reduce memory usage. |
| RPC                             | Remote Procedure Call                                                                                                                                                             |
| SDK                             | Software Development Kit                                                                                                                                                          |
| SNPE                            | Snapdragon Neural Processing Engine (a synonym for Qualcomm® Neural Processing SDK)                                                                                               |
| T2T                             | Text-to-Text                                                                                                                                                                      |
| TF                              | Tensorflow                                                                                                                                                                        |
| TTS                             | Text-to-Speech                                                                                                                                                                    |
| UDO                             | User Defined Operations                                                                                                                                                           |
| ViT                             | Vision Transformer                                                                                                                                                                |
| VLM                             | Vision-Language Model                                                                                                                                                             |
| Voice AI SDK                    | Qualcomm's on-device automatic speech recognition engine (VoiceAI ASR) that runs on the NPU.                                                                                      |
| VTCM                            | Very Tightly Coupled Memory                                                                                                                                                       |
| WSL                             | Windows Subsystem for Linux                                                                                                                                                       |
| XML                             | Extensible Markup Language                                                                                                                                                        |