I assume you are using 0.6.0 so you’ll have to wait for docs in progress.
Remember that you are substituting the cart id for the typical user id so do a
user-based query with the cart id but passed in as “user", or send a list of
items as “item-set” in the query.
curl -H "Content-Type: application/json" -d '{"user" : "1"}'
http://localhost:8000/queries.json <http://localhost:8000/queries.json> #
notice query is a cart id
curl -H "Content-Type: application/json" -d '{"item-set" : ["1"]}'
http://localhost:8000/queries.json <http://localhost:8000/queries.json> #
notice the query is a set of item-ids
for this to work there must be a “user” of id “1” with the cart contents
recorded from "cart-transaction” events. The item-set query should work
regardless of cart ids since you are passing in a list of item-ids in the cart.
On May 23, 2017, at 10:07 AM, Dennis Honders <[email protected]> wrote:
Still same questions as previous.
Addition to this mail:
Engine.json
{
"comment":" This config file uses default settings for all but the required
values see README.md for docs",
"id": "default",
"description": "Default settings",
"engineFactory": "com.actionml.RecommendationEngine",
"datasource": {
"params" : {
"name": "ur-name",
"appName": "Test",
"eventNames": ["cart-transaction"]
}
},
"sparkConf": {
"spark.serializer": "org.apache.spark.serializer.KryoSerializer",
"spark.kryo.registrator":
"org.apache.mahout.sparkbindings.io.MahoutKryoRegistrator",
"spark.kryo.referenceTracking": "false",
"spark.kryoserializer.buffer.mb": "300",
"spark.kryoserializer.buffer": "300m",
"es.index.auto.create": "true"
},
"algorithms": [
{
"comment": "simplest setup where all values are default, popularity based
backfill, must add eventsNames",
"name": "ur",
"params": {
"appName": "Test",
"indexName": "test",
"typeName": "cart",
"comment": "must have data for the first event or the model will not
build, other events are optional",
"eventNames": ["cart-transaction"]
},
"blacklistEvents": [],
"num": 10,
"maxQueryEvents": 20
}
]
}
Also tried the following (added quotes to the json):
curl -H "Content-Type: application/json" -d '{"cart" : ["1"]}'
http://localhost:8000/queries.json <http://localhost:8000/queries.json>
curl -H "Content-Type: application/json" -d '{"item" : ["1"]}'
http://localhost:8000/queries.json <http://localhost:8000/queries.json>
curl -H "Content-Type: application/json" -d '{"items" : ["1"]}'
http://localhost:8000/queries.json <http://localhost:8000/queries.json>
Retrieved the following error:
Stack Trace:
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected
BEGIN_OBJECT but was STRING at line 1 column 2
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:176)
at com.google.gson.Gson.fromJson(Gson.java:803)
at com.google.gson.Gson.fromJson(Gson.java:768)
at com.google.gson.Gson.fromJson(Gson.java:717)
at com.google.gson.Gson.fromJson(Gson.java:689)
at
org.apache.predictionio.workflow.JsonExtractor$.extractWithGson(JsonExtractor.scala:155)
at
org.apache.predictionio.workflow.JsonExtractor$.extract(JsonExtractor.scala:73)
at
org.apache.predictionio.workflow.ServerActor$$anonfun$24.apply(CreateServer.scala:479)
at
org.apache.predictionio.workflow.ServerActor$$anonfun$24.apply(CreateServer.scala:473)
at
spray.routing.ApplyConverterInstances$$anon$22$$anonfun$apply$1.apply(ApplyConverterInstances.scala:25)
at
spray.routing.ApplyConverterInstances$$anon$22$$anonfun$apply$1.apply(ApplyConverterInstances.scala:24)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1$$anonfun$apply$1.apply(Directive.scala:38)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1$$anonfun$apply$1.apply(Directive.scala:37)
at
spray.routing.directives.BasicDirectives$$anon$1.happly(BasicDirectives.scala:26)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1.apply(Directive.scala:37)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1.apply(Directive.scala:36)
at
spray.routing.directives.BasicDirectives$$anon$2.happly(BasicDirectives.scala:79)
at
spray.routing.Directive$$anon$7$$anonfun$happly$4.apply(Directive.scala:86)
at
spray.routing.Directive$$anon$7$$anonfun$happly$4.apply(Directive.scala:86)
at
spray.routing.directives.BasicDirectives$$anon$3$$anonfun$happly$1.apply(BasicDirectives.scala:92)
at
spray.routing.directives.BasicDirectives$$anon$3$$anonfun$happly$1.apply(BasicDirectives.scala:92)
at
spray.routing.directives.ExecutionDirectives$$anonfun$detach$1$$anonfun$apply$7$$anonfun$apply$3.apply$mcV$sp(ExecutionDirectives.scala:89)
at
spray.routing.directives.ExecutionDirectives$$anonfun$detach$1$$anonfun$apply$7$$anonfun$apply$3.apply(ExecutionDirectives.scala:89)
at
spray.routing.directives.ExecutionDirectives$$anonfun$detach$1$$anonfun$apply$7$$anonfun$apply$3.apply(ExecutionDirectives.scala:89)
at
scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at
scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at
scala.concurrent.impl.ExecutionContextImpl$$anon$3.exec(ExecutionContextImpl.scala:107)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was
STRING at line 1 column 2
at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:374)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:165)
... 30 more
Still same questions as previous mail.
2017-05-23 16:23 GMT+02:00 Dennis Honders <[email protected]
<mailto:[email protected]>>:
I trained and deployed the universal recommender.
I only get the populair products as a result.
Trainingdata
[
{"event": "cart-transaction", "entityId": "1", "entityType": "user",
"targetEntityId": "12", "targetEntityType": "item"},
{"event": "cart-transaction", "entityId": "1", "entityType": "user",
"targetEntityId": "13", "targetEntityType": "item"},
{"event": "cart-transaction", "entityId": "1", "entityType": "user",
"targetEntityId": "14", "targetEntityType": "item"}
]
{"event": "$set", "entityType": "item", "entityId": "12", "properties":
{"category": ["1", "2", "3", "4", "5", "6", "7"], "manufacturer": 1, "label":
"test", "price": "$1-$2"}}
Query
curl -H "Content-Type: application/json" -d { "item": ["1"]}
http://localhost:8000/queries.json <http://localhost:8000/queries.json>
curl -H "Content-Type: application/json" -d { "items": ["1"]}
http://localhost:8000/queries.json <http://localhost:8000/queries.json>
curl -H "Content-Type: application/json" -d { "cart-transaction": ["1"]}
http://localhost:8000/queries.json <http://localhost:8000/queries.json>
Result
The populair (most bought) items, also for products that are sold a lot.
Log:
[INFO] [URAlgorithm] No user id for recs, returning item-based recs if an item
is specified in the query.
[INFO] [URAlgorithm] Query:
{"size":10,"query":{"bool":{"should":[{"terms":{"cart-transaction":[]}},{"constant_score":{"filter":{"match_all":{}},"boost":0}}],"must":[],"must_not":[{"ids":{"values":[],"boost":0}}],"minimum_should_match":1}},"sort":[{"_score":{"order":"desc"}},{"popRank":{"unmapped_type":"double","order":"desc"}}]}
[INFO] [URAlgorithm] Results: 10 retrieved of a possible 70658
Is the query correct?
What else could be the problem here?
Note: I also like to return 'similar items' (based on properties) when no
relation could be found with 'buy'.
