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Surprise – a simple recommender system library for Python
1 project | reddit.com/r/Python | 1 Mar 20221 project | reddit.com/r/recommendersystems | 1 Mar 20221 project | reddit.com/r/programming | 1 Mar 20221 project | news.ycombinator.com | 1 Mar 2022
Dislike button would improve Spotify's recommendations
4 projects | news.ycombinator.com | 16 Oct 2021
I spent the latter half of 2019 trying to build this as a startup. Ultimately I pivoted (now I do newsletter recommendations instead), but if I hadn't made some mistakes I think it could've gotten more traction. Mostly I should've simplified the idea to make it easier to build. If anyone's interested in working on this, here's what I would do:
(But first some background: The way I saw it, you can split music recommendation into two tasks: (1) picking a song you already know that should be played right now, and (2) picking a new song you've never heard of before. (Music recommendation is unique in this way since in most other domains there isn't much value in re-recommending items). I think #1 is more important, and if you nail that, you can do a so-so job of #2 and still have a good system.)
Make a website that imports your Last.fm history. Organize the history into sessions (say, groups of listen events with a >= 30 minute gap in between). Feed those sessions into a collaborative filtering library like Surprise, as a CSV of `, , 1` (1 being a rating--in this case we only have positive ratings). Then make some UI that lets people create and export playlists. e.g. I pick a couple seed songs from my listening history, then the app uses Surprise to suggest more songs. Present a list of 10 songs at a time. Click a song to add it, and have a "skip all" button that gets a new list of songs. Save these interactions as ratings--e.g. if I skip a song, that's a -1 rating for this playlist. For some percentage of the suggestions (20% by default? Make it configurable), use Last.fm's or Spotify's API to pick a new song not in your history, based on the songs in the current playlist. Also sometimes include songs that were added to the playlist previously--if you skip them, they get removed from the playlist. Then you can spend a couple minutes every week refreshing your playlists. Export the playlists to Spotify/Apple Music/whatever.
As you get more users, you can do "regular" collaborative filtering (i.e. with different users) to recommend new songs instead of relying on external APIs. There are probably lots of other things you could do too--e.g. scrape wikipedia to figure out what artists have done collaborations or something. In general I think the right approach is to build a model for artist similarity rather than individual song similarity. At recommendation time, you pick an artist and then suggest their top songs (and sometimes pick an artist already in the user's history, and suggest songs they haven't heard yet--that's even easier).
This is the simplest thing I can think of that would solve my "I love music but I listen to the same old songs everyday because I'm busy and don't want to futz around with curating my music library" problem. You wouldn't have to waste time building a crappy custom music app, and users won't have to use said crappy custom music app (speaking from personal experience...). You wouldn't have to deal with music rights or integrating with Spotify/Apple Music since you're not actually playing any music.
If you want to go further with it, you could get traction first and then launch your own streaming service or something. (Reminds me a bit of Readwise starting with just highlights and then launching their own reader recently). I think it'd be neat to make an indie streaming service--kind of like Bandcamp but with an algorithm to help you find the good stuff. Let users upload and listen to their own MP3s so it can still work with popular music. Of course it'd be nicer for users in the short term if you just made deals with the big record labels, however this would help you not end up in Spotify's position of pivoting to podcasts so you can get out of paying record labels. And then maybe in a few decades all the good music won't be on the big labels anyway :).
Anyway if anyone is remotely interested in building something like this, I'll be your first user. I really need it. Otherwise I'll probably build it myself at some point in the next year or two as a side project.
Show HN: The Sample – newsletters curated for you with machine learning
1 project | news.ycombinator.com | 28 Jun 2021
I'm planning to build a business on this, so probably won't open-source it--but I'm always looking for interesting things to write about! I write a weekly newsletter called Future of Discovery; I might write up some more implementation details there in a week or two. In the mean time, most of the heavy lifting is done by the Surprise python lib. It's pretty easy to play around with, just give it a csv of , , and then you can start making rating predictions. Also fastText is easy to mess around with too. Most of the code I've written just layers things on top of that, e.g. to handle exploration-vs-exploitation as discussed in another thread here.
Recently I've been factoring out the ML code into a separate recommendation service so it can different kinds of apps (I just barely made this essay recommender system start using it for example).
I'm happy to chat about recommender systems also if you like, email's in my profile.
1 project | news.ycombinator.com | 18 May 2022
How could I use batch normalization in TensorFlow?
1 project | reddit.com/r/codehunter | 17 Apr 2022
I would like to use batch normalization in TensorFlow. I found the related C++ source code in core/ops/nn_ops.cc. However, I did not find it documented on tensorflow.org.
[P] Neural Network for Image Classification
3 projects | reddit.com/r/SubSimulatorGPT2 | 16 Apr 2022
When I'm on a project & cloning a repo, which branch should I clone?
2 projects | reddit.com/r/learnprogramming | 13 Apr 2022
If data science uses a lot of computational power, then why is python the most used programming language?
6 projects | reddit.com/r/learnmachinelearning | 13 Apr 2022
For reference: In Tensorflow and JAX, for example, the tensor gets compiled to the intermediate XLA format (https://www.tensorflow.org/xla), then passed to the XLA complier (https://github.com/tensorflow/tensorflow/tree/master/tensorflow/compiler/xla/service) or the new TFRT runtime (https://github.com/tensorflow/runtime/blob/master/documents/tfrt_host_runtime_design.md), or some more esoteric hardware (https://github.com/pytorch/glow).
FFmpeg for Super Resolution on Ubuntu 20.04 : libtensorflow_framework Relink Error
1 project | reddit.com/r/linuxquestions | 10 Apr 2022
Looks like it's tensorflow-related, however I have verified that tensorflow is working properly on my system. I could find nothing on Google, there's just one thread discussing exactly the same error (here), however there is still no solution as well. I am aware the error is not symlink related, but just in case this information is needed : (or see in gist)
[Question] What are the best tutorials and resources for implementing NLP techniques on TensorFlow?
3 projects | reddit.com/r/SubSimulatorGPT2 | 7 Apr 2022
I don't have much experience with TensorFlow, but I'd recommend starting with TensorFlow.org3 projects | reddit.com/r/SubSimulatorGPT2 | 7 Apr 2022
I have looked at this TensorFlow website and TensorFlow.org and some of the examples are written by others, and it seems that I am stuck in RNNs. What is the best way to install TensorFlow, to follow the documentation and learn the methods in RNNs in Python? Is there a good tutorial/resource?
TensorFlow saving into/loading a graph from a file
1 project | reddit.com/r/codehunter | 6 Apr 2022
Save a model into a .pb file and load it back in using tf.train.write_graph() and tf.import_graph_def() (source)
What's the purpose of tf.app.flags in TensorFlow?
1 project | reddit.com/r/codehunter | 31 Mar 2022
And I found the implementation of this flags is in the tensorflow/tensorflow/python/platform/default/_flags.py
What are some alternatives?
PaddlePaddle - PArallel Distributed Deep LEarning: Machine Learning Framework from Industrial Practice （『飞桨』核心框架，深度学习&机器学习高性能单机、分布式训练和跨平台部署）
LightFM - A Python implementation of LightFM, a hybrid recommendation algorithm.
Prophet - Tool for producing high quality forecasts for time series data that has multiple seasonality with linear or non-linear growth.
scikit-learn - scikit-learn: machine learning in Python
LightGBM - A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.
xgboost - Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Dask, Flink and DataFlow
Keras - Deep Learning for humans
MLflow - Open source platform for the machine learning lifecycle
Pytorch - Tensors and Dynamic neural networks in Python with strong GPU acceleration