Theme | Usability Issue | Heuristic | Number of participants reporting issues (n = 8) |
---|---|---|---|
Lack of instruction | Lack of instructions for the node buttons | Reduce uncertainty | 2/8 |
System complexity | Need to watch the tutorial first before using the system | Reduce uncertainty | 3/8 |
Incomplete functionality | Search history should not contain duplicates | Group data in consistently meaningful ways | 1/8 |
Search history should be categorized by type | Fuse data | 3/8 | |
Sometimes the lines between nodes disappear after filtering | Reduce uncertainty | 1/8 | |
The zoom button is not moving with the mouse pointer | Reduce uncertainty | 1/8 | |
The number of provided questions is not enough | Provide multiple coding of data when appropriate | 1/8 | |
The “Brief introduction” tutorial appears every time | Automate unwanted workload | 1/8 | |
Long response time | The reaction time for product search autocomplete is too long | Reduce uncertainty | 2/8 |
Unclear information presentation | It is a little hard to understand the search results | Present new information with meaningful aids to interpretation | 2/8 |