| 4 | 50 | vector_add |
| 4 | 51 | vector_subtract |
| 4 | 51 | vector_sum |
| 4 | 51 | scalar_multiply |
| 4 | 51 | vector_mean |
| 4 | 51 | dot |
| 4 | 52 | sum_of_squares |
| 4 | 52 | magnitude |
| 4 | 53 | squared_distance |
| 4 | 53 | distance |
| 4 | 53 | shape |
| 4 | 54 | get_row |
| 4 | 54 | get_column |
| 4 | 54 | make_matrix |
| 4 | 54 | is_diagonal |
| 5 | 59 | mean |
| 5 | 59 | median |
| 5 | 60 | quantile |
| 5 | 60 | mode |
| 5 | 61 | data_range |
| 5 | 61 | de_mean |
| 5 | 61 | variance |
| 5 | 62 | standard_deviation |
| 5 | 62 | interquartile_range |
| 5 | 62 | covariance |
| 5 | 63 | correlation |
| 6 | 71 | random_kid |
| 6 | 74 | uniform_pdf |
| 6 | 74 | uniform_cdf |
| 6 | 75 | normal_pdf |
| 6 | 77 | normal_cdf |
| 6 | 78 | inverse_normal_cdf |
| 6 | 79 | bernoulli_trial |
| 6 | 79 | binomial |
| 6 | 79 | make_hist |
| 7 | 82 | normal_approximation_to_binomial |
| 7 | 82 | normal_probability_below |
| 7 | 82 | normal_probability_above |
| 7 | 82 | normal_probability_between |
| 7 | 82 | normal_probability_outside |
| 7 | 82 | normal_upper_bound |
| 7 | 82 | normal_lower_bound |
| 7 | 82 | normal_two_sided_bounds |
| 7 | 84 | two_sided_p_value |
| 7 | 86 | run_experiment |
| 7 | 86 | reject_fairness |
| 7 | 88 | estimated_parameters |
| 7 | 88 | a_b_test_statistic |
| 7 | 89 | B |
| 7 | 89 | beta_pdf |
| 8 | 93 | sum_of_squares |
| 8 | 94 | difference_quotient |
| 8 | 95 | square |
| 8 | 95 | derivative |
| 8 | 96 | partial_difference_quotient |
| 8 | 97 | estimate_gradient |
| 8 | 97 | step |
| 8 | 97 | sum_of_squares_gradient |
| 8 | 98 | safe |
| 8 | 98 | minimize_batch |
| 8 | 99 | negate |
| 8 | 99 | negate_all |
| 8 | 99 | maximize_batch |
| 8 | 99 | in_random_order |
| 8 | 100 | minimize_stochastic |
| 8 | 100 | maximize_stochastic |
| 9 | 111 | is_video |
| 9 | 112 | book_info |
| 9 | 113 | get_year |
| 10 | 122 | bucketize |
| 10 | 122 | make_histogram |
| 10 | 122 | plot_histogram |
| 10 | 123 | random_normal |
| 10 | 125 | correlation_matrix |
| 10 | 128 | parse_row |
| 10 | 128 | parse_rows_with |
| 10 | 128 | try_or_none |
| 10 | 129 | try_parse_field |
| 10 | 129 | parse_dict |
| 10 | 130 | picker |
| 10 | 130 | pluck |
| 10 | 130 | group_by |
| 10 | 131 | percent_price_change |
| 10 | 131 | day_over_day_changes |
| 10 | 133 | scale |
| 10 | 133 | rescale |
| 10 | 135 | de_mean_matrix |
| 10 | 135 | direction |
| 10 | 136 | directional_variance_i |
| 10 | 136 | directional_variance |
| 10 | 136 | directional_variance_gradient_i |
| 10 | 136 | directional_variance_gradient |
| 10 | 136 | first_principal_component |
| 10 | 136 | first_principal_component_sgd |
| 10 | 137 | project |
| 10 | 137 | remove_projection_from_vector |
| 10 | 137 | remove_projection |
| 10 | 138 | principal_component_analysis |
| 10 | 138 | transform_vector |
| 10 | 138 | transform |
| 11 | 144 | split_data |
| 11 | 144 | train_test_split |
| 11 | 146 | accuracy |
| 11 | 146 | precision |
| 11 | 146 | recall |
| 11 | 146 | f1_score |
| 12 | 152 | raw_majority_vote |
| 12 | 152 | majority_vote |
| 12 | 153 | knn_classify |
| 12 | 157 | random_point |
| 12 | 157 | random_distances |
| 13 | 168 | tokenize |
| 13 | 168 | count_words |
| 13 | 168 | word_probabilities |
| 13 | 168 | spam_probability |
| 13 | 169 | NaiveBayesClassifier |
| 13 | 171 | p_spam_given_word |
| 13 | 171 | drop_final_s |
| 14 | 174 | predict |
| 14 | 174 | error |
| 14 | 174 | sum_of_squared_errors |
| 14 | 174 | least_squares_fit |
| 14 | 175 | total_sum_of_squares |
| 14 | 175 | r_squared |
| 14 | 176 | squared_error |
| 14 | 176 | squared_error_gradient |
| 15 | 181 | error |
| 15 | 181 | squared_error |
| 15 | 182 | squared_error_gradient |
| 15 | 182 | estimate_beta |
| 15 | 183 | multiple_r_squared |
| 15 | 184 | bootstrap_sample |
| 15 | 184 | bootstrap_statistic |
| 15 | 185 | estimate_sample_beta |
| 15 | 185 | p_value |
| 15 | 186 | ridge_penalty |
| 15 | 186 | squared_error_ridge |
| 15 | 187 | ridge_penalty_gradient |
| 15 | 187 | squared_error_ridge_gradient |
| 15 | 187 | estimate_beta_ridge |
| 15 | 188 | lasso_penalty |
| 16 | 192 | logistic |
| 16 | 192 | logistic_prime |
| 16 | 193 | logistic_log_likelihood_i |
| 16 | 193 | logistic_log_likelihood |
| 16 | 194 | logistic_log_partial_ij |
| 16 | 194 | logistic_log_gradient_i |
| 16 | 194 | logistic_log_gradient |
| 17 | 204 | entropy |
| 17 | 205 | class_probabilities |
| 17 | 205 | data_entropy |
| 17 | 205 | partition_entropy |
| 17 | 207 | partition_by |
| 17 | 207 | partition_entropy_by |
| 17 | 209 | classify |
| 17 | 209 | build_tree_id3 |
| 17 | 211 | forest_classify |
| 18 | 213 | step_function |
| 18 | 213 | perceptron_output |
| 18 | 215 | sigmoid |
| 18 | 216 | neuron_output |
| 18 | 217 | feed_forward |
| 18 | 219 | backpropagate |
| 18 | 221 | predict |
| 18 | 222 | patch |
| 19 | 226 | KMeans |
| 19 | 230 | squared_clustering_errors |
| 19 | 234 | is_leaf |
| 19 | 234 | get_children |
| 19 | 234 | get_values |
| 19 | 234 | cluster_distance |
| 19 | 234 | get_merge_order |
| 19 | 234 | bottom_up_cluster |
| 19 | 236 | generate_clusters |
| 20 | 240 | text_size |
| 20 | 242 | fix_unicode |
| 20 | 242 | generate_using_bigrams |
| 20 | 243 | generate_using_trigrams |
| 20 | 245 | expand |
| 20 | 246 | roll_a_die |
| 20 | 246 | direct_sample |
| 20 | 247 | random_y_given_x |
| 20 | 247 | random_x_given_y |
| 20 | 247 | gibbs_sample |
| 20 | 247 | compare_distributions |
| 20 | 249 | sample_from |
| 20 | 250 | p_topic_given_document |
| 20 | 250 | p_word_given_topic |
| 20 | 250 | topic_weight |
| 20 | 251 | choose_new_topic |
| 21 | 257 | shortest_paths_from |
| 21 | 259 | farness |
| 21 | 260 | matrix_product_entry |
| 21 | 260 | matrix_mutiply |
| 21 | 261 | vector_as_matrix |
| 21 | 261 | vector_from_matrix |
| 21 | 261 | matrix_operate |
| 21 | 261 | find_eigenvector |
| 21 | 262 | entry_fn |
| 21 | 265 | page_rank |
| 22 | 268 | most_popular_new_interests |
| 22 | 269 | cosine_similarity |
| 22 | 270 | make_user_interest_vector |
| 22 | 270 | most_similar_users_to |
| 22 | 271 | user_based_suggestions |
| 22 | 272 | most_similar_interests_to |
| 22 | 273 | item_based_suggestions |
| 23 | 276 | Table |
| 23 | 277 | Table.update |
| 23 | 278 | Table.delete |
| 23 | 279 | Table.select |
| 23 | 279 | Table.where |
| 23 | 279 | Table.limit |
| 23 | 281 | Table.group_by |
| 23 | 281 | min_user_id |
| 23 | 282 | first_letter_of_name |
| 23 | 282 | average_num_friends |
| 23 | 282 | enough_friends |
| 23 | 282 | Table.order_by |
| 23 | 284 | Table.join |
| 23 | 285 | count_interests |
| 24 | 290 | word_count_old |
| 24 | 290 | wc_mapper |
| 24 | 290 | wc_reducer |
| 24 | 290 | word_count |
| 24 | 292 | map_reduce |
| 24 | 292 | reduce_values_using |
| 24 | 292 | values_reducer |
| 24 | 292 | sum_reducer |
| 24 | 292 | max_reducer |
| 24 | 292 | min_reducer |
| 24 | 292 | count_distinct_reducer |
| 24 | 293 | data_science_day_mapper |
| 24 | 293 | words_per_user_mapper |
| 24 | 294 | most_popular_word_reducer |
| 24 | 294 | liker_mapper |
| 24 | 295 | matrix_multiply_mapper |
| 24 | 295 | matrix_multiply_reducer |