From d8aa6f493d2e74678c7268cc0d7f2ab6ce7ac6de Mon Sep 17 00:00:00 2001
From: Christoph Helma <helma@in-silico.ch>
Date: Fri, 25 Jun 2010 20:14:51 +0200
Subject: regression initially working

---
 model.rb | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 model.rb

(limited to 'model.rb')

diff --git a/model.rb b/model.rb
new file mode 100644
index 0000000..36670d9
--- /dev/null
+++ b/model.rb
@@ -0,0 +1,100 @@
+class ToxCreateModel
+	include DataMapper::Resource
+	property :id, Serial
+	property :name, String, :length => 255
+	property :uri, String, :length => 255
+	property :task_uri, String, :length => 255
+	property :validation_task_uri, String, :length => 255
+	property :validation_uri, String, :length => 255
+	property :validation_report_task_uri, String, :length => 255
+	property :validation_report_uri, String, :length => 255
+	property :warnings, Text, :length => 2**32-1 
+	property :nr_compounds, Integer
+	property :created_at, DateTime
+
+	def status
+		RestClient.get(File.join(@task_uri, 'hasStatus')).body
+	end
+
+	def validation_status
+		begin
+			RestClient.get(File.join(@validation_task_uri, 'hasStatus')).body
+		rescue
+			"Service offline"
+		end
+	end
+
+	def validation_report_status
+		begin
+			RestClient.get(File.join(@validation_report_task_uri, 'hasStatus')).body
+		rescue
+			"Service offline"
+		end
+	end
+
+	def algorithm
+		begin
+			RestClient.get(File.join(@uri, 'algorithm')).body
+		rescue
+			""
+		end
+	end
+
+	def training_dataset
+		begin
+			RestClient.get(File.join(@uri, 'trainingDataset')).body
+		rescue
+			""
+		end
+	end
+
+	def feature_dataset
+		begin
+			RestClient.get(File.join(@uri, 'feature_dataset')).body
+		rescue
+			""
+		end
+	end
+
+	def validation
+		begin
+			uri = File.join(@validation_uri, 'statistics')
+			yaml = RestClient.get(uri).body
+			v = YAML.load(yaml)
+			tp=0; tn=0; fp=0; fn=0; n=0
+			v[:classification_statistics][:confusion_matrix][:confusion_matrix_cell].each do |cell|
+				if cell[:confusion_matrix_predicted] == "true" and cell[:confusion_matrix_actual] == "true"
+					tp = cell[:confusion_matrix_value]
+					n += tp
+				elsif cell[:confusion_matrix_predicted] == "false" and cell[:confusion_matrix_actual] == "false"
+					tn = cell[:confusion_matrix_value]
+					n += tn
+				elsif cell[:confusion_matrix_predicted] == "false" and cell[:confusion_matrix_actual] == "true"
+					fn = cell[:confusion_matrix_value]
+					n += fn
+				elsif cell[:confusion_matrix_predicted] == "true" and cell[:confusion_matrix_actual] == "false"
+					fp = cell[:confusion_matrix_value]
+					n += fp
+				end
+			end
+			{
+				:n => n,
+				:tp => tp,
+				:fp => fp,
+				:tn => tn,
+				:fn => fn, 
+				:correct_predictions => sprintf("%.2f", 100*(tp+tn).to_f/n),
+				:weighted_area_under_roc => sprintf("%.3f", v[:classification_statistics][:weighted_area_under_roc].to_f),
+				:sensitivity => sprintf("%.3f", tp.to_f/(tp+fn)),
+				:specificity => sprintf("%.3f", tn.to_f/(tn+fp))
+			}
+		rescue
+			"Service offline"
+		end
+	end
+
+end
+
+DataMapper.auto_upgrade!
+
+
-- 
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