As the title. I do not understand the concept of channel, side channel and typed side channel in the Lenskit source code. Can anyone give me a brief explanation? Thanks.
Lenskit: what is channel, side channel, typed side channel
93 Views Asked by xin_cucs At
1
There are 1 best solutions below
Related Questions in LENSKIT
- Getting "Extra args block must be a javascript object literal." error when trying to move a Google Task
- Unable to authenticate with Google Tasks - Homework
- Google APIs - Different Versions
- Syncing Google Tasks created in Google Apps with those created in our Web Application (Grails/Java)
- Allowing others to add Google tasks
- Is it possible to add some meta information to Google Tasks?
- Google Tasks Shared List Limit?
- Google task api due field
- How do you use Google tasks API from an Android app?
- Due Date is not updating on google
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
LensKit lead developer here.
Sparse vectors and scored IDs are used to associate values with IDs (usually users or items). Side channels are a mechanism to associate additional values with each ID. They are extra data (an additional 'channel' of data) that goes with the 'primary' data.
'Typed' side channels can store any type of data (string, list, whatever). The type is associated with the key used to access the data, so you can get the data out in a type-safe fashion.
'Unboxed' side channels (sometimes just called 'side channels', especially in older code) are an optimized implementation of side channels of
Double.One place these are used is to allow the
ItemItemScorerto report how many neighbors it used to score each item. TheFallbackItemScoreruses a typed side channel to report which item scorer generated each score.Side channels are somewhat confusing and complicated, though. We are considering ways to change how they work for LensKit 3.0 to make it more obvious.