040000 tree d454f284a0d85265c94f25002abbc576ead825ab	array_ops
040000 tree 40d05a5e8132c8fc408f39bc4241d15f36e14144	kmeans
040000 tree eb89d1171af40b65bb08a5bf1e291621a86468e3	sketch
040000 tree 2078bc5082563bbf31f3da3adcca5437072ecf56	stemmer
040000 tree a0720e31cc6671eabe4210502fdc3915596cb739	svec
040000 tree 1e301fa360a9c5d3c52eaef85f106ae544ff47e5	svec_util
040000 tree 1cf715cb64a5e792e278b2cc98432970ce07754b	utils