To decide the optimal length of text snippets to retrieve, we carried out pilot experiments with two length settings: 250 (≈ 110 English words) and 400 (≈ 175 English words) Chinese characters, and found that more context words helped improve WSD performance (results not shown).
it is possible that the Chinese translations are also ambiguous, which can make the topic of a collection of text snippets deviate from what is expected.