two positives net off (?)

[ghost]

Am I missing something fundamental or is it a design?

A reproducible example below indicates netting-off that might need to be flagged to unsuspected users or fixed.

Example:
words "x" and "y" are positive.
same with phrases "x y" and "y z".
a phrase "x y z" ends up neutral, although one would hope it's positive as both words and phrases are positive! Interestingly "z x y" are positive and so is "x z y". The latter is actually the most positive :)

---

library(sentimentr)
mykey <- data.frame(
words = c("x", "y", "x y", "y z"),
polarity = c(1,1,1,1),
stringsAsFactors = FALSE
)
mytext<-c("x", "y", "z", "x z", "y z", "x y", "x y z", "z x y", "x z y")
sentiment("x", polarity_dt = as_key(mykey))
sentiment("y", polarity_dt = as_key(mykey))
sentiment("z", polarity_dt = as_key(mykey))
sentiment("x y", polarity_dt = as_key(mykey))
sentiment("y z", polarity_dt = as_key(mykey))
sentiment("x y z", polarity_dt = as_key(mykey))
sentiment("z x y", polarity_dt = as_key(mykey))
sentiment("x z y", polarity_dt = as_key(mykey))

---

sentiment("x", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 1 1
sentiment("y", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 1 1
sentiment("z", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 1 0
sentiment("x y", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 2 0.7071068
sentiment("y z", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 2 0.7071068
sentiment("x y z", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 3 0
sentiment("z x y", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 3 0.5773503
sentiment("x z y", polarity_dt = as_key(mykey))
element_id sentence_id word_count sentiment
1: 1 1 3 1.154701

[ghost]

Interestingly using only words = c("x", "y", "y z") or words = c("x", "y", "x y") does give the expected correct results, it's only when "x", "y" and "x y" and "y z" are in the lexicon then "x y z" is netted of to zero somehow. I'd appreciate any thoughts

[trinker]

Is this the same as: #102? If so why open 2 separate issues for the same issue?