neuraltalk

Source

Classification

Summary

NeuralTalk Warning: Deprecated. Hi there, this code is now quite old and inefficient, and now deprecated. I am leaving it on Github for educational purposes, but if you would like to run or train image captioning I warmly recommend my new code release 1 and is SIGNIFICANTLY (I mean, ~100x+) faster because it is batched and runs on the GPU. It also supports CNN finetuning, which helps a lot with performance. This project contains Python+numpy source code for learning Multimodal Recurrent Neural Networks that describe images with sentences. This line of work was recently featured in a…

What This Teaches

  • How core neural network ideas can be rebuilt from first principles.
  • Useful for grounding later LLM work in gradients, activations, optimization, and model internals.

Why It Matters

This is high-priority for Vipin because it supports durable first-principles understanding instead of shallow API use.

Repository Snapshot

  • Full name: karpathy/neuraltalk
  • Default branch: master
  • HEAD: c36bd0aa23907638a1217f03a13bdba5e1a8cada
  • Stars at crawl: 5488
  • Forks at crawl: 1330
  • File count: 62
  • README path: Readme.md
  • License path: “
  • Created: 2014-11-27T23:22:39Z
  • Updated: 2026-05-13T15:31:59Z
  • Pushed: 2020-12-22T22:26:36Z

Top-Level Structure

  • example_images: 26
  • [root]: 9
  • imagernn: 9
  • vis_resources: 7
  • matlab_features_reference: 4
  • python_features: 3
  • cv: 1
  • data: 1
  • eval: 1
  • status: 1

File Extension Profile

  • .jpg: 20
  • .py: 13
  • .md: 8
  • .js: 5
  • .html: 3
  • .m: 2
  • .prototxt: 2
  • .txt: 2
  • .css: 1
  • .gitignore: 1
  • .json: 1
  • .map: 1

Tags / Release-Like Markers

  • No git tags found in the shallow local clone.

Sample File Tree

  • .gitignore
  • cv/Readme.md
  • data/README.md
  • driver.py
  • eval/multi-bleu.perl
  • eval_sentence_predictions.py
  • example_images/7EGRMwN.jpg
  • example_images/89pUfSc.jpg
  • example_images/animals.jpg
  • example_images/cat.jpg
  • example_images/cobra.jpg
  • example_images/diving.jpg
  • example_images/dogdinner.jpg
  • example_images/frog.jpg
  • example_images/gWEHGwf.jpg
  • example_images/hole.jpg
  • example_images/japanese.jpg
  • example_images/jump.jpg
  • example_images/koala.jpg
  • example_images/mic.jpg
  • example_images/pope.jpg
  • example_images/pose.jpg
  • example_images/qjujW6d.png
  • example_images/QmG3nS6.jpg
  • example_images/Readme.md
  • example_images/result.html
  • example_images/result_struct.json
  • example_images/seal.jpg
  • example_images/tasks.txt
  • example_images/UbVIl1e.jpg
  • example_images/vgg_feats.mat
  • example_images/work.jpg
  • imagernn/__init__.py
  • imagernn/data_provider.py
  • imagernn/generic_batch_generator.py
  • imagernn/imagernn_utils.py
  • imagernn/lstm_generator.py
  • imagernn/Readme.md
  • imagernn/rnn_generator.py
  • imagernn/solver.py
  • imagernn/utils.py
  • matlab_features_reference/deploy_features.prototxt
  • matlab_features_reference/extract_features.m
  • matlab_features_reference/prepare_images_batch.m
  • matlab_features_reference/README.md
  • monitorcv.html
  • predict_on_images.py
  • py_caffe_feat_extract.py
  • python_features/deploy_features.prototxt
  • python_features/extract_features.py
  • python_features/README.md
  • Readme.md
  • requirements.txt
  • status/Readme.md
  • vis_resources/d3.min.js
  • vis_resources/d3utils.css
  • vis_resources/d3utils.js
  • vis_resources/jquery-1.8.3.min.js
  • vis_resources/jsutils.js
  • vis_resources/underscore-min.js
  • vis_resources/underscore-min.map
  • visualize_result_struct.html

Public Handling Notes

  • EXTRACTED: This page records public metadata and a source-grounded summary.
  • INFERRED: Full local preservation, when available, is for private/local use unless a license or explicit source policy makes public redistribution safe.
  • Do not treat this page as permission to republish unlicensed source text or code wholesale.