Can search systems detect users' task difficulty?: some behavioral signals.

@inproceedings{liu-2010-search, author = {Jingjing Liu and Chang Liu and Jacek Gwizdka and Nicholas J. Belkin}, editor = {Fabio Crestani and St\'{e}phane Marchand-Maillet and Hsin-Hsi Chen and Efthimis N. Efthimiadis and Jacques Savoy}, title = {{Can search systems detect users' task difficulty?: some behavioral signals}}, booktitle = {{Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010}}, pages = {845--846}, publisher = {ACM}, year = {2010}, url = {https://doi.org/10.1145/1835449.1835645}, doi = {https://doi.org/10.1145/1835449.1835645} }