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From Dennis Honders <dennishond...@gmail.com>
Subject Re: Only one result Universal Recommender
Date Tue, 23 May 2017 21:37:09 GMT
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 <pat@occamsmachete.com> 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 <dennishonders@gmail.com> 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$Adapter.read(ReflectiveTypeAdapterFactory.java:165)
>         ... 30 more
> 
> Still same questions as previous mail. 
> 
> 2017-05-23 16:23 GMT+02:00 Dennis Honders <dennishonders@gmail.com>:
>> I trained and deployed the universal recommender. 
>> I only get the populair products as a result. 
>> 
>> Trainingdata
>> 
>> [
>> {"event": "cart-transaction", "entityId": "1", "entityType": "user", "targetEntityId":
"12", "targetEntityType": "item"}, 
>> {"event": "cart-transaction", "entityId": "1", "entityType": "user", "targetEntityId":
"13", "targetEntityType": "item"}, 
>> {"event": "cart-transaction", "entityId": "1", "entityType": "user", "targetEntityId":
"14", "targetEntityType": "item"}
>> ]​
>> 
>> {"event": "$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'. 
> 
> 

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