Model Generation - Clusters new clusters items user queries concepts, categories query-to-items Query-Recall Generation Cluster Generation Clusters Model Generation Data Store Clusters Inventory Clickstream Conceptual Knowledgebase Problem: Global clustering not feasible Solution: Partition input data by user queries Parallel distributed K-Means in Hadoop MapReduce Dedupe and merge overlapping clusters (100X reduction in size over inventory with over 90% coverage) LSRS 201314
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