converting a DocumentTermMatrix to factor
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7 weeks ago
hasani.iut6 ▴ 70

Hi everyone,

I have variable with type of DocumentTermMatrix, and I want to replace any element of it by zero and one(if element value > 0 is equal to 1 and if not is equal to 0)

I wrote the following function:

yes_or_no = function(x)
{
y = ifelse(x>0 , 1,0)
y = factor(y , levels = c(0,1) , labels = c("no","yes"))
y
}
text_train = apply(text_freq_word_train, 2,yes_or_no)


the output doesn't seem to be correct.

head(inspect(text_freq_word_train)) =

<<DocumentTermMatrix (documents: 7168, terms: 2114)>>
Non-/sparse entries: 64968/15088184
Sparsity           : 100%
Maximal term length: 13
Weighting          : term frequency (tf)
Sample             :
Terms
Docs   job million obama percent presid say state tax vote year
1281   0       3     0       2      1   1     7   2    2    3
1619   0       0     0       0      0   0     0   0    0    0
2143   3       0     2       0      3   0     0   0    0    1
356    0       0     0       0      0   0     1   0    1    0
3928   0       1     0       0      0   0     0   0    0    1
3987   0       0     0       0      0   3     0   0    0    0
428    4       0     0       0      0   0     0   0    0    0
5157   0       0     0       0      0   0     0   1    0    1
5532   0       0     0       0      0   1     1   2    1    0
6120   1       0     2       0      4   2     0   0    0    0
Terms
Docs   job million obama percent presid say state tax vote year
1281   0       3     0       2      1   1     7   2    2    3
1619   0       0     0       0      0   0     0   0    0    0
2143   3       0     2       0      3   0     0   0    0    1
356    0       0     0       0      0   0     1   0    1    0
3928   0       1     0       0      0   0     0   0    0    1
3987   0       0     0       0      0   3     0   0    0    0

text_train[1:10,1:10] =
Terms
Docs abort anni  demand group list  polit say   support third trimest
1  "YES" "YES" "YES"  "YES" "YES" "YES" "YES" "YES"   "YES" "YES"
2  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
3  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
4  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
5  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
6  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
7  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
8  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
9  "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "NO"  "NO"    "NO"  "NO"
10 "NO"  "NO"  "NO"   "NO"  "NO"  "NO"  "YES" "NO"    "NO"  "NO"


where did I go wrong?

DocumentTermMatrix offtopic convert factor • 183 views
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