040000 tree 4780c537dd0033b85928e0d2c66a0ff815f67e5f	array_ops
040000 tree 40d05a5e8132c8fc408f39bc4241d15f36e14144	kmeans
040000 tree 1c544aabad6ee51369af7958fdd988b258818cb8	sketch
040000 tree 2078bc5082563bbf31f3da3adcca5437072ecf56	stemmer
040000 tree a0720e31cc6671eabe4210502fdc3915596cb739	svec
040000 tree 1e301fa360a9c5d3c52eaef85f106ae544ff47e5	svec_util
040000 tree afb516ca418f0501e6ff82372768ce60aefa3a93	utils