Hi. I found that there are many duplicate records with same user id and timestamp in KT1 and KT3. For example, for user u1, in dataset KT1, there are two records with same timestamp 1567140388553 as below:
1567140388553,219,q10649,a,57500
1567140388553,219,q10648,b,57500
Another example in KT3 for user u1 with timestamp 1567115277665:
1567115277665,respond,q4790,sprint,b,mobile
1567115277665,respond,q4790,sprint,b,mobile
The first example is very confusing because of different user responses for different questions. Moreover, it seems that it is not possible to reconstruct records in KT1 with data in KT3, due to the inconsistent timestamp recorded. I am wondering whether there are some clear issues in the dataset. Is there any way to get a cleaner version? Many thanks!