Non-contiguous word sequences for information retrieval
Antoine Doucet, Helena Ahonen-Myka · 2004
The growing amount of textual information available electronically has increased the need for high performance retrieval. The use of phrases was long seen as a natural way to improve retrieval performance over the common document models that ignore the sequential aspect of word occurrences in documents, considering them as "bags of words". However, both statistical and syntactical phrases showed disappointing results for large document collections.