[patch:lib] Add base paper categories + more aliases (#21)

* Fix Arx::Category#full_name + add base categories

* Add more aliases to Arx::Paper

lib/arx/categories.rb

@@ -11,6 +11,7 @@ module Arx
     'astro-ph.HE' => 'High Energy Astrophysical Phenomena',
     'astro-ph.IM' => 'Instrumentation and Methods for Astrophysics',
     'astro-ph.SR' => 'Solar and Stellar Astrophysics',
+    'cond-mat' => 'Condensed Matter',
     'cond-mat.dis-nn' => 'Disordered Systems and Neural Networks',
     'cond-mat.mes-hall' => 'Mesoscale and Nanoscale Physics',
     'cond-mat.mtrl-sci' => 'Materials Science',
@@ -20,6 +21,7 @@ module Arx
     'cond-mat.stat-mech' => 'Statistical Mechanics',
     'cond-mat.str-el' => 'Strongly Correlated Electrons',
     'cond-mat.supr-con' => 'Superconductivity',
+    'cs' => 'Computer Science',
     'cs.AI' => 'Artificial Intelligence',
     'cs.AR' => 'Hardware Architecture',
     'cs.CC' => 'Computational Complexity',
@@ -60,7 +62,9 @@ module Arx
     'cs.SE' => 'Software Engineering',
     'cs.SI' => 'Social and Information Networks',
     'cs.SY' => 'Systems and Control',
+    'econ' => 'Economics',
     'econ.EM' => 'Econometrics',
+    'eess' => 'Electrical Engineering and Systems Science',
     'eess.AS' => 'Audio and Speech Processing',
     'eess.IV' => 'Image and Video Processing',
     'eess.SP' => 'Signal Processing',
@@ -69,6 +73,7 @@ module Arx
     'hep-lat' => 'High Energy Physics - Lattice',
     'hep-ph' => 'High Energy Physics - Phenomenology',
     'hep-th' => 'High Energy Physics - Theory',
+    'math' => 'Mathematics',
     'math.AC' => 'Commutative Algebra',
     'math.AG' => 'Algebraic Geometry',
     'math.AP' => 'Analysis of PDEs',
@@ -102,13 +107,15 @@ module Arx
     'math.SP' => 'Spectral Theory',
     'math.ST' => 'Statistics Theory',
     'math-ph' => 'Mathematical Physics',
+    'nlin' => 'Nonlinear Sciences',
     'nlin.AO' => 'Adaptation and Self-Organizing Systems',
     'nlin.CD' => 'Chaotic Dynamics',
     'nlin.CG' => 'Cellular Automata and Lattice Gases',
     'nlin.PS' => 'Pattern Formation and Solitons',
     'nlin.SI' => 'Exactly Solvable and Integrable Systems',
     'nucl-ex' => 'Nuclear Experiment',
     'nucl-th' => 'Nuclear Theory',
+    'physics' => 'Physics',
     'physics.acc-ph' => 'Accelerator Physics',
     'physics.ao-ph' => 'Atmospheric and Oceanic Physics',
     'physics.app-ph' => 'Applied Physics',
@@ -131,6 +138,7 @@ module Arx
     'physics.pop-ph' => 'Popular Physics',
     'physics.soc-ph' => 'Physics and Society',
     'physics.space-ph' => 'Space Physics',
+    'q-bio' => 'Quantitative Biology',
     'q-bio.BM' => 'Biomolecules',
     'q-bio.CB' => 'Cell Behavior',
     'q-bio.GN' => 'Genomics',
@@ -141,6 +149,7 @@ module Arx
     'q-bio.QM' => 'Quantitative Methods',
     'q-bio.SC' => 'Subcellular Processes',
     'q-bio.TO' => 'Tissues and Organs',
+    'q-fin' => 'Quantitative Finance',
     'q-fin.CP' => 'Computational Finance',
     'q-fin.EC' => 'Economics',
     'q-fin.GN' => 'General Finance',
@@ -151,6 +160,7 @@ module Arx
     'q-fin.ST' => 'Statistical Finance',
     'q-fin.TR' => 'Trading and Market Microstructure',
     'quant-ph' => 'Quantum Physics',
+    'stat' => 'Statistics',
     'stat.AP' => 'Applications',
     'stat.CO' => 'Computation',
     'stat.ME' => 'Methodology',

lib/arx/entities/category.rb

@@ -18,7 +18,7 @@ class Category
     # @see CATEGORIES
     # @return [String]
     def full_name
-      CATEGORIES[term]
+      CATEGORIES[name]
     end
   end
 end

lib/arx/entities/paper.rb

@@ -37,11 +37,13 @@ def url
     # The date that the paper was last updated.
     # @return [DateTime]
     element :last_updated, DateTime, tag: 'updated'
+    alias_method :updated_at, :last_updated
 
     # @!method publish_date
     # The original publish/submission date of the paper.
     # @return [DateTime]
     element :publish_date, DateTime, tag: 'published'
+    alias_method :published_at, :publish_date
 
     # @!method title
     # The title of the paper.
@@ -57,11 +59,13 @@ def url
     # The primary category of the paper.
     # @return [Category]
     element :primary_category, Category, tag: 'primary_category'
+    alias_method :primary_subject, :primary_category
 
     # @!method categories
     # The categories of the paper.
     # @return [Array<Category>]
     has_many :categories, Category, tag: 'category'
+    alias_method :subjects, :categories
 
     # Whether the paper is a revision or not.
     # @note A paper is a revision if {last_updated} differs from {publish_date}.