Table 17: English Adversarial Examples Generated by SemAttack for BERT-based Classifier using  $\mathcal{F}_T$ .
Input (red = Modified character, bold = original character.)
Original English Text: I went to AAA for their travel service. They could not help me at all with my trip to Belize. They have zilch information and resources. This is a prime destination of American tourists. I was disappointed.
Adversarial English Text: I went to AAA tor their travel service. They could not help me at all with my trip to Belize. They have zilch information and resources. This is a prime destination of American tourists. I was disappointed.
Model Prediction: 1-star (most negative) → 5-star (most positive)
Original English Text: I called numerous times and noted that they are going to deliver at a work address between 9 am to 5 pm. They attempted delivery three times after 5 pm. I got ups to pick up my parcel and got it delivered on time.
Adversarial English Text: I called numerous times and noted that they are going to deliver at a work address between 9 am to 5 pm. They attempted delivery three times after 5 pm. I hot ups to pick up my parcel and got it delivered on time.
Model Prediction: 1-star (most negative) → 5-star (most positive)
Original English Text: Mercedes does the best mani and pedi! You really have to go in at least once to see what I mean.
Adversarial English Text: Mercedes does the bet mani and pedi! You really have to go in at least once to see what I mean.
Model Prediction: 5-star (most positive) → 1-star (most negative)
Original English Text: I was charged $ 200 to add 6 lbs of Freon to my air conditioning. I went to amazon.com and 25 lbs cost $ 120 including shipping. That should be approx $ 29 for 6 lbs of Freon. So labor which was 20 min, transportation, and equipment up - keep for john, the service person who came, was $ 171. I feel that's somewhat unreasonable. Just fair warning for the next customer. Update: after listening to my complaint, the owner offered to refund my payment. That was quite reasonable of them. Therefore, I switch my review to 4 stars.
Adversarial English Text: I was charged $ 200 to ad 6 lbs of Freon to my air conditioning. I went to amazon.com and 25 lbs cost $ 120 including shipping. That should be approx $ 29 fog 6 lbs of Freon. So labor which was 20 min, transportation, and equipment up - keep for john, the service person who came, was $ 171. I feel that's somewhat unreasonable. Just fair warning for the next customer. Update: after listening to my complaint, the owner offered to refund my payment. That was quite reasonable of them. Therefore, I switch my review to 4 stars.
Model Prediction: 4-star (positive) → 1-star (most negative)
Original English Text: Liked how they were open late and also had happy hour specials after 10 pm. We really liked the bulgogi and korean prime kalbi. They were marinated very flavor-fully . the mushroom medley and sweet corn were also very good. Would definitely keep this place on my list of late night eats or when iia just craving korean barbecue.
Adversarial English Text: Lied how they were open late and also had happy hour specials after 10 pm. We really lied the bulgogi and korean prime kalbi. They were marinated very flavor-fully . the mushroom medley and sweet corn were also very good. Would definitely keep this place on my list of late night eats or when iia just craving korean barbecue.
Model Prediction: 4-star (positive) → 1-star (most negative)