Class: ClassifierReborn::CachedContentNode

Inherits:
ContentNode
  • Object
show all
Defined in:
lib/classifier-reborn/lsi/cached_content_node.rb

Overview

Subclass of ContentNode which caches the search_vector transpositions. Its great because its much faster for large indexes, but at the cost of more ram. Additionally, if you Marshal your classifier and want to keep the size down, you’ll need to manually clear the cache before you dump

Defined Under Namespace

Modules: InstanceMethods

Instance Attribute Summary

Attributes inherited from ContentNode

#categories, #lsi_norm, #lsi_vector, #raw_norm, #raw_vector, #word_hash

Instance Method Summary collapse

Methods inherited from ContentNode

#search_norm, #search_vector

Constructor Details

#initialize(word_hash, *categories) ⇒ CachedContentNode

Returns a new instance of CachedContentNode.



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# File 'lib/classifier-reborn/lsi/cached_content_node.rb', line 20

def initialize(word_hash, *categories)
  clear_cache!
  super
end

Instance Method Details

#clear_cache! ⇒ Object 



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# File 'lib/classifier-reborn/lsi/cached_content_node.rb', line 25

def clear_cache!
  @transposed_search_vector = nil
end

#marshal_dump ⇒ Object

We don’t want the cached_data here



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# File 'lib/classifier-reborn/lsi/cached_content_node.rb', line 41

def marshal_dump
  [@lsi_vector, @lsi_norm, @raw_vector, @raw_norm, @categories, @word_hash]
end

#marshal_load(array) ⇒ Object 



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# File 'lib/classifier-reborn/lsi/cached_content_node.rb', line 45

def marshal_load(array)
  @lsi_vector, @lsi_norm, @raw_vector, @raw_norm, @categories, @word_hash = array
end

#raw_vector_with(word_list) ⇒ Object

Clear the cache before we continue on



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# File 'lib/classifier-reborn/lsi/cached_content_node.rb', line 35

def raw_vector_with(word_list)
  clear_cache!
  super
end

#transposed_search_vector ⇒ Object

Cache the transposed vector, it gets used a lot



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# File 'lib/classifier-reborn/lsi/cached_content_node.rb', line 30

def transposed_search_vector
  @transposed_search_vector ||= super
end