From 54eb948a7ebb0c818303579f047b2ee25924935b Mon Sep 17 00:00:00 2001 From: Benjamin Loison Date: Thu, 22 Dec 2022 02:02:48 +0100 Subject: [PATCH] Update `README.md` to clean notes concerning optimized approaches --- README.md | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/README.md b/README.md index 54fd522..0a0206d 100644 --- a/README.md +++ b/README.md @@ -1,12 +1,11 @@ As explained in the project proposal, the idea to retrieve all video ids is to start from a starting set of channels, then list their videos using YouTube Data API v3 PlaylistItems: list, then list the comments on their videos and then restart the process as we potentially retrieved new channels thanks to comment authors on videos from already known channels. -For a given channel, there is a single way to list comments users published on it: -As explained, YouTube Data API v3 PlaylistItems: list endpoint enables us to list the channel videos up to 20,000 videos and CommentThreads: list and Comments: list endpoints enable us to retrieve their comments +For a given channel, there are two ways to list comments users published on it: +1. As explained, YouTube Data API v3 PlaylistItems: list endpoint enables us to list the channel videos up to 20,000 videos (so we will not treat and write down channels in this case) and CommentThreads: list and Comments: list endpoints enable us to retrieve their comments +2. A simpler approach consists in using YouTube Data API v3 CommentThreads: list endpoint with `allThreadsRelatedToChannelId`. The main upside of this method, in addition to be simpler, is that for channels with many videos we spare much time by working 100 comments at a time instead of a video at a time with possibly not a single comment. Note that this approach doesn't list all videos etc so we don't retrieve some information. **As I haven't gone this way previously (or I forgot) making sure that for a given video we retrieve all its comments would make sense.** Note that this approach doesn't work for some channels that have comments enabled on some videos but not the whole channels.** +So when possible we will proceed with 2. and use 1. as a fallback approach. We can multi-thread this process by channel or we can multi-thread per videos of a given channel. As would like to proceed channel per channel, the question is **how much time does it take to retrieve all comments from the biggest YouTube channel? If the answer is a long period of time, then multi-threading per videos of a given channel may make sense.** -**In fact should proceed fastly with CommentThreads: list with `allThreads...` when possible** -**do I have an example of channels where commentthreads: list work but doesn't list a comment of a video ... ?** - Have to proceed with a breadth-first search approach as treating all *child* channels might take a time equivalent to treating the whole original tree.