added lab1

140991/lab1/.gitignore

+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore the default SQLite database.
+/db/*.sqlite3
+/db/*.sqlite3-journal
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Ignore Byebug command history file.
+.byebug_history

140991/lab1/rcd.rb

+data_points =[]
+
+k=5
+data_point_a = { :label =>"cat", :features => [12, 1, 1],:dist=>999 }
+data_point_b = { :label =>"cat", :features => [13, 3, 1],:dist=>999 }
+data_point_c = { :label =>"cat", :features => [15, 1, 1],:dist=>999 }
+data_point_d = { :label =>"cat", :features => [3, 12, 2],:dist=>999 }
+data_point_e = { :label =>"dog", :features => [4, 11, 2],:dist=>999 }
+data_point_f = { :label =>"dog", :features => [1, 11, 2],:dist=>999 }
+data_point_g = { :label =>"cat", :features => [11, 4, 1],:dist=>999 }
+data_point_h = { :label =>"cat", :features => [13, 2, 1],:dist=>999 }
+data_point_i = { :label =>"dog", :features => [3, 13, 2],:dist=>999 }
+data_point_j = { :label =>"dog", :features => [7, 12, 2],:dist=>999 }
+
+data_points<<data_point_a
+data_points<<data_point_b
+data_points<<data_point_c
+data_points<<data_point_d
+data_points<<data_point_e
+data_points<<data_point_f
+data_points<<data_point_g
+data_points<<data_point_h
+data_points<<data_point_i
+data_points<<data_point_j
+
+unknown = {label:nil,features:[14, 2, 1]}	
+
+distance_label = []
+
+def modified_bubble_sort(result)
+
+	for i in 0 ..result.count-1
+
+		for j in 0 ..result.count-1
+			if result[j+1] != nil
+				if result[j][:dist] > result[j+1][:dist]
+					temp = result[j]
+					result[j] = result[j+1]
+					result[j+1] = temp
+				end
+			end
+		end
+	end
+	result				
+end
+
+def euclidean(v1, v2)
+	total = 0
+	v1.each_with_index do |v1, index|
+		total = total + (v1 - v2[index])**2
+	end
+	Math.sqrt(total)
+
+end
+
+
+def use_knn( data, k, unknown_data_point)
+	resulting_array_of_stuff = []
+	#data.each do |d|
+#assign distances to entries
+		#d[:dist] = euclidean(d[:features], unknown_data_point[:features])
+		#puts " entry #{d[:label]} distance: #{d[:dist]}"
+	#end
+
+		sorted_data = modified_bubble_sort(data)
+		#data.each do |d|
+		#		puts " sorted entry #{d[:label]} distance: #{d[:dist]}"
+		#end
+		
+		cat_count=0
+		dog_count=0
+		for x in 0 .. k-1
+			if sorted_data[x][:label] == "cat"
+				cat_count = cat_count +1
+			else
+				if sorted_data[x][:label] == "dog"
+				dog_count = dog_count +1
+				else
+					
+				end
+			end
+		end
+		if cat_count>dog_count
+			type="cat"
+		else
+
+			if cat_count<dog_count
+				type="dog"
+			else
+				type="something in between"
+			end
+		end
+type
+end
+
+puts use_knn(data_points,k,unknown)
\ No newline at end of file

140991/lab2/Gemfile.lock

@@ -73,6 +73,9 @@ GEM
     mini_portile2 (2.1.0)
     minitest (5.9.0)
     multi_json (1.12.1)
+    nokogiri (1.6.8)
+      mini_portile2 (~> 2.1.0)
+      pkg-config (~> 1.1.7)
     nokogiri (1.6.8-x86-mingw32)
       mini_portile2 (~> 2.1.0)
       pkg-config (~> 1.1.7)
@@ -124,6 +127,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
+    sqlite3 (1.3.11)
     sqlite3 (1.3.11-x86-mingw32)
     thor (0.19.1)
     thread_safe (0.3.5)
@@ -143,6 +147,7 @@ GEM
       sprockets-rails (>= 2.0, < 4.0)
 
 PLATFORMS
+  ruby
   x86-mingw32
 
 DEPENDENCIES
@@ -158,3 +163,6 @@ DEPENDENCIES
   tzinfo-data
   uglifier (>= 1.3.0)
   web-console (~> 2.0)
+
+BUNDLED WITH
+   1.12.5