Operationalization of variables
| Variable | Definition and operationalization |
|---|---|
| Online review helpfulness | A review's number of helpfulness votes |
| Rating | The star rating of a review |
| Rating2 | The quadratic term of the star rating |
| Review length | The number of words in a review |
| Readability | Automated readability index |
| Available days | The number of days that had elapsed since a review was posted |
| Review sidedness | The degree to which both positive and negative sentiments were represented in a review |
| Information factuality | The proportion of neutral sentences in a review |
| Positive sentiment | A review's positive emotion score, calculated by aggregating sentences' positive emotion scores in a review |
| Negative sentiment | A review's negative emotion score, calculated by aggregating sentences' negative emotion scores in a review |
| Emotional intensity at the beginning of a review | The sentiment score of the first sentence in a review |
| Reviewer reputation | The number of helpfulness votes divided by the total number of reviews posted |
| Hotel class | The reviewed hotel's official class rating |
| Hotel popularity | The number of reviews a hotel had received |
| Hotel reputation | A hotel's average customer rating |
| Variable | Definition and operationalization |
|---|---|
| Online review helpfulness | A review's number of helpfulness votes |
| Rating | The star rating of a review |
| Rating2 | The quadratic term of the star rating |
| Review length | The number of words in a review |
| Readability | Automated readability index |
| Available days | The number of days that had elapsed since a review was posted |
| Review sidedness | The degree to which both positive and negative sentiments were represented in a review |
| Information factuality | The proportion of neutral sentences in a review |
| Positive sentiment | A review's positive emotion score, calculated by aggregating sentences' positive emotion scores in a review |
| Negative sentiment | A review's negative emotion score, calculated by aggregating sentences' negative emotion scores in a review |
| Emotional intensity at the beginning of a review | The sentiment score of the first sentence in a review |
| Reviewer reputation | The number of helpfulness votes divided by the total number of reviews posted |
| Hotel class | The reviewed hotel's official class rating |
| Hotel popularity | The number of reviews a hotel had received |
| Hotel reputation | A hotel's average customer rating |
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