Facing issue ith MinMaxNormalizer

[Kamal Kishore Aggarwal <kk...@gmail.com>]

Hi All,

Appreciate if someone can help.
I am using LTR with MinMaxNormalizer in solr 6.6.2.

Model.json

 "class": "org.apache.solr.ltr.model.MultipleAdditiveTreesModel",
    "name": "XGBOOST-BBB-LTR-Model",
    "store":"BBB-Feature-Model",
    "features": [
        {
            "name": "TFIDF",
         "norm":{
                 "class" : "org.apache.solr.ltr.norm.MinMaxNormalizer",
                    "params" : { "min":"0.0", "max":"1.0"}
         }
        },
        {
            "name": "p_ratings_f",
         "norm":{
                 "class" : "org.apache.solr.ltr.norm.MinMaxNormalizer",
                    "params" : { "min":"1.0", "max":"5.0"}
         }
        },
        {
            "name": "p_instore_trans_cnt_f",
             "norm":{
                 "class" : "org.apache.solr.ltr.norm.MinMaxNormalizer",
                    "params" : { "min":"1.0", "max":"209561.0" }
         }
        },
        {
            "name": "p_reviews_f",
             "norm":{
                 "class" : "org.apache.solr.ltr.norm.MinMaxNormalizer",
                    "params" : { "min":"0.0", "max":"58375.0"}
         }
        }

 The model got uploaded successfully, but when I reloaded the collection,
it failed and below error is observed:

Caused by: java.lang.RuntimeException: Error invoking setter setMin on
class : org.apache.solr.ltr.norm.MinMaxNormalizer
        at
org.apache.solr.util.SolrPluginUtils.invokeSetters(SolrPluginUtils.java:1084)
        at
org.apache.solr.ltr.norm.Normalizer.getInstance(Normalizer.java:49)
        at
org.apache.solr.ltr.store.rest.ManagedModelStore.fromNormalizerMap(ManagedModelStore.java:293)
        at
org.apache.solr.ltr.store.rest.ManagedModelStore.createNormalizerFromFeatureMap(ManagedModelStore.java:276)
        at
org.apache.solr.ltr.store.rest.ManagedModelStore.fromLTRScoringModelMap(ManagedModelStore.java:230)
        at
org.apache.solr.ltr.store.rest.ManagedModelStore.addModelFromMap(ManagedModelStore.java:133)
        at
org.apache.solr.ltr.store.rest.ManagedModelStore.loadStoredModels(ManagedModelStore.java:126)
        at
org.apache.solr.ltr.search.LTRQParserPlugin.onManagedResourceInitialized(LTRQParserPlugin.java:133)
        at
org.apache.solr.rest.ManagedResource.notifyObserversDuringInit(ManagedResource.java:115)
        at
org.apache.solr.rest.ManagedResource.loadManagedDataAndNotify(ManagedResource.java:91)
        at
org.apache.solr.rest.RestManager.createManagedResource(RestManager.java:694)
        ... 41 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at
org.apache.solr.util.SolrPluginUtils.invokeSetters(SolrPluginUtils.java:1082)
        ... 51 more
Caused by: java.lang.NumberFormatException: For input string: ""0.0""
        at
sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2043)
        at sun.misc.FloatingDecimal.parseFloat(FloatingDecimal.java:122)
        at java.lang.Float.parseFloat(Float.java:451)
        at
org.apache.solr.ltr.norm.MinMaxNormalizer.setMin(MinMaxNormalizer.java:58)

I tried uploading the model without double quotes in param value for min
and max, it also got failed with below error.

"java.lang.IllegalArgumentException: argument type mismatch\n\tat
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n\tat
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n\tat
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat
java.lang.reflect.Method.invoke(Method.java:498)\n\tat
org.apache.solr.util.SolrPluginUtils.invokeSetters(SolrPluginUtils.java:1082)\n\tat
org.apache.solr.ltr.norm.Normalizer.getInstance(Normalizer.java:49)\n\tat
org.apache.solr.ltr.store.rest.ManagedModelStore.fromNormalizerMap(ManagedModelStore.java:293)\n\tat
org.apache.solr.ltr.store.rest.ManagedModelStore.createNormalizerFromFeatureMap(ManagedModelStore.java:276)\n\tat
org.apache.solr.ltr.store.rest.ManagedModelStore.fromLTRScoringModelMap(ManagedModelStore.java:230)\n\tat
org.apache.solr.ltr.store.rest.ManagedModelStore.addModelFromMap(ManagedModelStore.java:133)\n\tat
org.apache.solr.ltr.store.rest.ManagedModelStore.applyUpdatesToManagedData(ManagedModelStore.java:162)\n\tat

Also, I can see on the collection that there is escape in double quotes in
model on model api (s/s below).

[image: image.png]


Regards
Kamal Kishore