Thanks for the answer. I remember the user part. Every cart is treated as a new
one so user-based won't be used in this case.
Is 'item-set' a specific keyword for the item-based query? (curl -H
"Content-Type: application/json" -d '{"item-set" :
["1"]}'http://localhost:8000/queries.json)
If so, I think I might know why I got the gson error.
> Op 23 mei 2017 om 20:47 heeft Pat Ferrel <[email protected]> het
> volgende geschreven:
>
> 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 # notice query is a cart id
> curl -H "Content-Type: application/json" -d '{"item-set" : ["1"]}'
> 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
> curl -H "Content-Type: application/json" -d '{"item" : ["1"]}'
> http://localhost:8000/queries.json
> curl -H "Content-Type: application/json" -d '{"items" : ["1"]}'
> 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$Adapter.read(ReflectiveTypeAdapterFactory.java:165)
> ... 30 more
>
> Still same questions as previous mail.
>
> 2017-05-23 16:23 GMT+02:00 Dennis Honders <[email protected]>:
>> I trained and deployed the universal recommender.
>> I only get the populair products as a result.
>>
>> Trainingdata
>>
>> [
>> {"event": "cart-transaction", "entityId": "1", "entityType": "user",
>> "targetEntityId": "12", "targetEntityType": "item"},
>> {"event": "cart-transaction", "entityId": "1", "entityType": "user",
>> "targetEntityId": "13", "targetEntityType": "item"},
>> {"event": "cart-transaction", "entityId": "1", "entityType": "user",
>> "targetEntityId": "14", "targetEntityType": "item"}
>> ]
>>
>> {"event": "$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
>>
>> curl -H "Content-Type: application/json" -d { "items": ["1"]}
>> http://localhost:8000/queries.json
>>
>> curl -H "Content-Type: application/json" -d { "cart-transaction": ["1"]}
>> 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'.
>
>
