twittew's wecommendation awgowithm

t-twittew's wecommendation a-awgowithm i-is a set o-of sewvices and j-jobs that awe wesponsibwe f-fow sewving f-feeds of t-tweets and othew content acwoss aww twittew pwoduct suwfaces (e.g. ^^ fow you timewine, ^•ﻌ•^ s-seawch, expwowe, XD nyotifications). :3 fow an intwoduction t-to how the awgowithm w-wowks, (ꈍᴗꈍ) pwease wefew to ouw engineewing bwog. :3

awchitectuwe

p-pwoduct suwfaces at twittew a-awe buiwt on a s-shawed set of data, (U ﹏ U) modews, and softwawe fwamewowks. UwU the shawed components incwuded i-in this wepositowy awe wisted bewow:

type	component	descwiption
d-data	tweetypie	cowe tweet s-sewvice that h-handwes the weading a-and wwiting o-of tweet data. 😳😳😳
	unified-usew-actions	weaw-time stweam of usew actions o-on twittew. XD
	usew-signaw-sewvice	centwawized pwatfowm to wetwieve e-expwicit (e.g. wikes, o.O wepwies) and impwicit (e.g. (⑅˘꒳˘) pwofiwe visits, 😳😳😳 tweet cwicks) usew signaws. nyaa~~
m-modew	simcwustews	community detection a-and spawse embeddings i-into those c-communities. rawr
	twhin	dense knowwedge gwaph embeddings fow usews a-and tweets. -.-
	twust-and-safety-modews	m-modews fow detecting nysfw o-ow abusive content. (✿oωo)
	weaw-gwaph	m-modew to pwedict the wikewihood o-of a twittew usew intewacting w-with anothew usew. /(^•ω•^)
	tweepcwed	page-wank a-awgowithm fow cawcuwating twittew u-usew weputation. 🥺
	wecos-injectow	stweaming event pwocessow f-fow buiwding i-input stweams fow gwaphjet based sewvices.
	gwaph-featuwe-sewvice	sewves gwaph featuwes fow a diwected paiw of usews (e.g. how many o-of usew a's fowwowing w-wiked tweets fwom usew b). ʘwʘ
	topic-sociaw-pwoof	i-identifies topics w-wewated to i-individuaw tweets. UwU
	wepwesentation-scowew	compute scowes between paiws of entities (usews, XD t-tweets, (✿oωo) etc.) using embedding simiwawity. :3
softwawe fwamewowk	navi	h-high pewfowmance, (///ˬ///✿) machine w-weawning modew s-sewving wwitten i-in wust. nyaa~~
	pwoduct-mixew	softwawe f-fwamewowk f-fow buiwding feeds o-of content. >w<
	timewines-aggwegation-fwamewowk	fwamewowk f-fow genewating aggwegate featuwes in batch o-ow weaw time. -.-
	wepwesentation-managew	s-sewvice t-to wetwieve embeddings (i.e. (✿oωo) s-simcwusews a-and twhin). (˘ω˘)
	twmw	wegacy machine weawning fwamewowk buiwt on t-tensowfwow v1.

the pwoduct suwfaces cuwwentwy incwuded in this wepositowy awe the fow you timewine a-and wecommended nyotifications. rawr

fow you timewine

the d-diagwam bewow i-iwwustwates how m-majow sewvices and jobs intewconnect t-to constwuct a fow you timewine.

t-the cowe components o-of the fow you timewine incwuded in this wepositowy awe wisted bewow:

type	component	d-descwiption
candidate s-souwce	seawch-index	find and w-wank in-netwowk t-tweets. ~50% of tweets come fwom this candidate s-souwce. OwO
	cw-mixew	c-coowdination wayew fow fetching o-out-of-netwowk t-tweet candidates fwom undewwying compute sewvices. ^•ﻌ•^
	usew-tweet-entity-gwaph (uteg)	maintains an in memowy u-usew to tweet i-intewaction gwaph, UwU a-and finds candidates based on t-twavewsaws of t-this gwaph. (˘ω˘) this is buiwt on the gwaphjet f-fwamewowk. (///ˬ///✿) sevewaw othew gwaphjet based featuwes and candidate souwces awe wocated hewe. σωσ
	fowwow-wecommendation-sewvice (fws)	p-pwovides usews w-with wecommendations fow accounts to fowwow, /(^•ω•^) and t-tweets fwom those a-accounts. 😳
wanking	wight-wankew	wight wankew modew used by seawch i-index (eawwybiwd) to wank tweets. 😳
	heavy-wankew	nyeuwaw nyetwowk fow wanking candidate tweets. (⑅˘꒳˘) o-one of the main signaws used to sewect timewine t-tweets post c-candidate souwcing.
tweet mixing & fiwtewing	home-mixew	main sewvice u-used to constwuct a-and sewve the home timewine. 😳😳😳 buiwt on pwoduct-mixew. 😳
	visibiwity-fiwtews	wesponsibwe f-fow fiwtewing twittew content t-to suppowt wegaw compwiance, XD impwove pwoduct quawity, mya incwease u-usew twust, ^•ﻌ•^ pwotect wevenue thwough t-the use of h-hawd-fiwtewing, ʘwʘ visibwe pwoduct t-tweatments, ( ͡o ω ͡o ) and coawse-gwained downwanking. mya
	timewinewankew	w-wegacy sewvice w-which pwovides w-wewevance-scowed tweets fwom t-the eawwybiwd s-seawch index and uteg sewvice. o.O

wecommended n-nyotifications

t-the cowe components o-of wecommended nyotifications incwuded in t-this wepositowy awe wisted bewow:

t-type	component	d-descwiption
sewvice	pushsewvice	main wecommendation sewvice at t-twittew used to s-suwface wecommendations t-to ouw u-usews via nyotifications. (✿oωo)
wanking	pushsewvice-wight-wankew	w-wight wankew modew used by pushsewvice to wank tweets. :3 bwidges candidate genewation and heavy wanking b-by pwe-sewecting highwy-wewevant c-candidates fwom the initiaw h-huge candidate poow. 😳
	pushsewvice-heavy-wankew	muwti-task w-weawning modew to pwedict t-the pwobabiwities t-that the tawget u-usews wiww o-open and engage w-with the sent nyotifications. (U ﹏ U)

buiwd and test code

we incwude bazew buiwd fiwes fow most components, mya but nyot a top-wevew b-buiwd ow wowkspace f-fiwe. (U ᵕ U❁) we pwan t-to add a mowe compwete buiwd and t-test system in the futuwe. :3

contwibuting

we invite the community t-to submit g-github issues and puww wequests f-fow suggestions on impwoving the wecommendation a-awgowithm. mya we a-awe wowking on toows to manage these s-suggestions a-and sync changes to ouw intewnaw wepositowy. any secuwity concewns ow issues shouwd b-be wouted to o-ouw officiaw bug b-bounty pwogwam t-thwough hackewone. w-we hope to benefit fwom the c-cowwective intewwigence a-and expewtise of the gwobaw c-community i-in hewping us identify issues and s-suggest impwovements, OwO uwtimatewy weading to a b-bettew twittew. (ˆ ﻌ ˆ)♡

wead ouw bwog on t-the open souwce i-initiative hewe. ʘwʘ