R és python

 

Egy rövid project (twitter sentiment analysis with vaderSentiment method) keretein belül az rPython csomagot használtuk és az ezzel kapcsolatos tapasztalatot szeretnénk most megosztani.

res_tweet

A project során tweet-ket gyűjtöttünk és egy adattáblába szerveztük őket. Ezután a python nyelven megírt VaderSentiment módszerrel elemeztük a tweeteket. A módszer lényege, hogy egy adott szöveget a benne lévő szavak, hangulatjelek és egyéb más rövidítések (pl.: LOL stb.) alapján számít ki 4 értéket (negatív, neutrális, pozitív és összesített).

Egy példa, a kapcsos zárójelben a számított értékek:

“VADER is smart, handsome, and funny.”
{‘neg’: 0.0, ‘neu’: 0.254, ‘pos’: 0.746, ‘compound’: 0.8316}

Értékelés:

A mondatban nem volt negatív töltésű rész. Körülbelül a szöveg ~25%-a semleges, míg a maradék ~75% pozitív kincsengésű volt. Összességében a normalizált “compound” érték 0.83 volt (-1 és 1 között lehet). Ha > 0.05, akkor pozitív, ha itt.

Az R és a python együttes használatával egy nagyon eszköztárat kapunk, amivel gyakorlatilag bármilyen problémát meg tudunk oldani!

Via: R és python

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