Added README.md notes for MultiWOZ dataset

README.md

@@ -1,5 +1,19 @@
-# master-thesis
+# Prompt-based methods for Dialog State Tracking  
   
-Repository for my master thesis at the University of Stuttgart (IMS)
+Repository for my master thesis at the University of Stuttgart (IMS).  
   
-// TODO :: Add commands for training, testing & evaluation here
+Refer to this thesis [proposal](proposal/proposal_submission_1st.pdf) document for detailed explanation about thesis experiments.  
+    
+## Dataset
+MultiWOZ 2.1 [dataset](https://github.com/budzianowski/multiwoz/blob/master/data/MultiWOZ_2.1.zip) is used for training and evaluation of the baseline/prompt-based methods. MultiWOZ is a fully-labeled dataset with a collection of human-human written conversations spanning over multiple domains and topics. Only single-domain dialogues are used in this setup for training and testing. Each dialogue contains multiple turns and may also contain a sub-domain *booking*. Five domains - *Hotel, Train, Restaurant, Attraction, Taxi* are used in the experiments and excluded the other two domains as they only appear in the training set. Under few-shot settings, only a portion of the training data is utilized to measure the performance of the DST task in a low-resource scenario. Dialogues are randomly picked for each domain. The below table contains some statistics of the dataset and data splits for the few-shot experiments.
+
+| Data Split | # Dialogues | # Total Turns |
+|--|:--:|:--:|
+| 50-dpd | 250 | 1114 |
+| 100-dpd | 500 | 2292 |
+| 125-dpd | 625 | 2831 |
+| 250-dpd | 1125 | 5187 |
+| valid | 190 | 900 |
+| test | 193 | 894 |
+
+In the above table, term "*dpd*" refers to "*dialogues per domain*". For example, *50-dpd* means *50 dialogues per each domain*.