Datasets:

learner20011
/

CloverTexts-Data

Error code:   DatasetGenerationError
Exception:    ArrowInvalid
Message:      Schema at index 3 was different: 
bookId: string
title: string
author: string
totalPages: int64
engine: string
pages: list<item: struct<page: int64, dimensions: struct<width: double, height: double>, blocks: list<item: struct<id: string, type: string, text: string, words: list<item: struct<w: string, b: list<item: double>>>>>>>
vs
bookId: string
title: string
author: string
totalPages: int64
engine: string
pages: list<item: struct<page: int64, dimensions: struct<width: double, height: double>, blocks: list<item: null>>>
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1848, in _prepare_split_single
                  writer.write_table(table)
                  ~~~~~~~~~~~~~~~~~~^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 764, in write_table
                  self.write_rows_on_file()  # in case there are buffered rows to write first
                  ~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 662, in write_rows_on_file
                  table = pa.concat_tables(self.current_rows)
                File "pyarrow/table.pxi", line 6321, in pyarrow.lib.concat_tables
                File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
                  return check_status(status)
                File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
                  raise convert_status(status)
              pyarrow.lib.ArrowInvalid: Schema at index 3 was different: 
              bookId: string
              title: string
              author: string
              totalPages: int64
              engine: string
              pages: list<item: struct<page: int64, dimensions: struct<width: double, height: double>, blocks: list<item: struct<id: string, type: string, text: string, words: list<item: struct<w: string, b: list<item: double>>>>>>>
              vs
              bookId: string
              title: string
              author: string
              totalPages: int64
              engine: string
              pages: list<item: struct<page: int64, dimensions: struct<width: double, height: double>, blocks: list<item: null>>>
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1869, in _prepare_split_single
                  num_examples, num_bytes = writer.finalize()
                                            ~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 781, in finalize
                  self.write_rows_on_file()
                  ~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 662, in write_rows_on_file
                  table = pa.concat_tables(self.current_rows)
                File "pyarrow/table.pxi", line 6321, in pyarrow.lib.concat_tables
                File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
                File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
                  raise convert_status(status)
              pyarrow.lib.ArrowInvalid: Schema at index 3 was different: 
              bookId: string
              title: string
              author: string
              totalPages: int64
              engine: string
              pages: list<item: struct<page: int64, dimensions: struct<width: double, height: double>, blocks: list<item: struct<id: string, type: string, text: string, words: list<item: struct<w: string, b: list<item: double>>>>>>>
              vs
              bookId: string
              title: string
              author: string
              totalPages: int64
              engine: string
              pages: list<item: struct<page: int64, dimensions: struct<width: double, height: double>, blocks: list<item: null>>>
              
              The above exception was the direct cause of the following exception:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
                  parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
                                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^
                      builder, max_dataset_size_bytes=max_dataset_size_bytes
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
                  builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1694, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~^
                      gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  ):
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1880, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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id string	title string	author string	totalPages int64	fileSize int64	pdfUrl string	coverUrl string	layoutUrl string	toc list	category string	tags list
building_winning_algorithmic_trading_systems_kevin_j_davey	Building Winning Algorithmic Trading Systems	Kevin J. Davey	284	6,309,632	data/pdfs/building_winning_algorithmic_trading_systems_kevin_j_davey.pdf	data/covers/building_winning_algorithmic_trading_systems_kevin_j_davey.jpg	data/layouts/building_winning_algorithmic_trading_systems_kevin_j_davey.json	[ { "level": 1, "title": "BUILDING WINNING ALGORITHMIC TRADING SYSTEMS", "page": 3 }, { "level": 1, "title": "CONTENTS", "page": 9 }, { "level": 1, "title": "ACKNOWLEDGMENTS", "page": 11 }, { "level": 1, "title": "ABOUT THE AUTHOR", "page": 13 }, { "...	Trading	[ "Algorithmic", "Quantitative", "Trading Systems" ]
definitive_guide_to_position_sizing_van_k_tharp	Definitive Guide to Position Sizing	Van K. Tharp	399	28,576,510	data/pdfs/definitive_guide_to_position_sizing_van_k_tharp.pdf	data/covers/definitive_guide_to_position_sizing_van_k_tharp.jpg	data/layouts/definitive_guide_to_position_sizing_van_k_tharp.json	[]	Trading	[ "Position Sizing", "Risk Management", "Money Management" ]
evidence_based_technical_analysis_david_aronson	Evidence-Based Technical Analysis	David Aronson	528	3,130,487	data/pdfs/evidence_based_technical_analysis_david_aronson.pdf	data/covers/evidence_based_technical_analysis_david_aronson.jpg	data/layouts/evidence_based_technical_analysis_david_aronson.json	[]	Trading	[ "Technical Analysis", "Quantitative", "Scientific Method" ]
fa_kathylein_day_trading_and_swing_trading_the_currency_mark	Day Trading and Swing Trading the Currency Market	Kathy Lien	307	5,984,848	data/pdfs/fa_kathylein_day_trading_and_swing_trading_the_currency_mark.pdf	data/covers/fa_kathylein_day_trading_and_swing_trading_the_currency_mark.jpg	data/layouts/fa_kathylein_day_trading_and_swing_trading_the_currency_mark.json	[ { "level": 1, "title": "Day Trading & Swing Trading the Currency Market", "page": 1 }, { "level": 2, "title": "Contents", "page": 7 }, { "level": 2, "title": "Preface", "page": 9 }, { "level": 3, "title": "FOREIGN EXCHANGE—THE FASTEST-GROWING MARKET OF OUR TIM...	Trading	[ "Forex", "Day Trading", "Swing Trading" ]
quantitative_trading_ernest_p_chan_z_library_sk_1lib_sk_z_li	Quantitative Trading	Ernest P. Chan	256	9,499,083	data/pdfs/quantitative_trading_ernest_p_chan_z_library_sk_1lib_sk_z_li.pdf	data/covers/quantitative_trading_ernest_p_chan_z_library_sk_1lib_sk_z_li.jpg	data/layouts/quantitative_trading_ernest_p_chan_z_library_sk_1lib_sk_z_li.json	[ { "level": 1, "title": "Cover", "page": 1 }, { "level": 1, "title": "Title Page", "page": 5 }, { "level": 1, "title": "Copyright Page", "page": 6 }, { "level": 1, "title": "Contents", "page": 9 }, { "level": 1, "title": "Preface to the 2nd Edit...	Trading	[ "Quantitative", "Algorithmic", "Statistical Arbitrage" ]
study_guide_for_the_new_trading_for_a_living_alexander_elder	Study Guide for The New Trading for a Living	Alexander Elder	162	3,244,460	data/pdfs/study_guide_for_the_new_trading_for_a_living_alexander_elder.pdf	data/covers/study_guide_for_the_new_trading_for_a_living_alexander_elder.jpg	data/layouts/study_guide_for_the_new_trading_for_a_living_alexander_elder.json	[ { "level": 1, "title": "Study Guide for The New Trading for a Living", "page": 3 }, { "level": 1, "title": "CONTENTS", "page": 7 }, { "level": 1, "title": "ABOUT THIS STUDY GUIDE", "page": 9 }, { "level": 1, "title": "PART 1 Questions and Rating Scales", "...	Trading	[ "Study Guide", "Psychology", "Technical Analysis" ]
technical_analysis_of_the_financial_market_john_j_murphy	Technical Analysis of the Financial Markets	John J. Murphy	494	17,534,809	data/pdfs/technical_analysis_of_the_financial_market_john_j_murphy.pdf	data/covers/technical_analysis_of_the_financial_market_john_j_murphy.jpg	data/layouts/technical_analysis_of_the_financial_market_john_j_murphy.json	[ { "level": 1, "title": "Title Page", "page": 3 }, { "level": 1, "title": "Copyright", "page": 4 }, { "level": 1, "title": "Dedication", "page": 6 }, { "level": 1, "title": "Contents", "page": 7 }, { "level": 1, "title": "About the Author", ...	Trading	[ "Technical Analysis", "Chart Patterns", "Indicators" ]
the_new_trading_for_a_living	The New Trading for a Living	Alexander Elder	303	15,716,534	data/pdfs/the_new_trading_for_a_living.pdf	data/covers/the_new_trading_for_a_living.jpg	data/layouts/the_new_trading_for_a_living.json	[ { "level": 1, "title": "The New Trading for a Living", "page": 3 }, { "level": 1, "title": "CONTENTS", "page": 9 }, { "level": 1, "title": "PREFACE", "page": 13 }, { "level": 1, "title": "Introduction", "page": 17 }, { "level": 2, "title": "1. ...	Trading	[ "Psychology", "Risk Management", "Trading Tactics" ]
the_art_and_science_of_trading_course_workbook_adam_grimes	The Art and Science of Trading - Course Workbook	Adam Grimes	590	16,300,880	data/pdfs/the_art_and_science_of_trading_course_workbook_adam_grimes.pdf	data/covers/the_art_and_science_of_trading_course_workbook_adam_grimes.jpg	data/layouts/the_art_and_science_of_trading_course_workbook_adam_grimes.json	[ { "level": 1, "title": "Frontmatter", "page": 2 }, { "level": 1, "title": "1: Chartreading 101", "page": 14 }, { "level": 1, "title": "2: Chartreading, Going Deeper", "page": 75 }, { "level": 1, "title": "3: Market Structure & Price Action", "page": 104 ...	Trading	[ "Price Action", "Workbook", "Technical Analysis" ]
the_candlestick_course_steve_nison	The Candlestick Course	Steve Nison	225	19,529,776	data/pdfs/the_candlestick_course_steve_nison.pdf	data/covers/the_candlestick_course_steve_nison.jpg	data/layouts/the_candlestick_course_steve_nison.json	[ { "level": 1, "title": "Cover Book", "page": 1 }, { "level": 1, "title": "Copyright", "page": 4 }, { "level": 1, "title": "Contents", "page": 5 }, { "level": 1, "title": "Foreword", "page": 7 }, { "level": 1, "title": "About the Author", "p...	Trading	[ "Candlesticks", "Chart Patterns", "Price Action" ]
the_art_and_science_of_technical_analysis_adam_grimes	The Art & Science of Technical Analysis	Adam Grimes	663	11,147,053	data/pdfs/the_art_and_science_of_technical_analysis_adam_grimes.pdf	data/covers/the_art_and_science_of_technical_analysis_adam_grimes.jpg	data/layouts/the_art_and_science_of_technical_analysis_adam_grimes.json	[ { "level": 1, "title": "Series", "page": 7 }, { "level": 1, "title": "Title Page", "page": 8 }, { "level": 1, "title": "Copyright", "page": 9 }, { "level": 1, "title": "Dedication", "page": 11 }, { "level": 1, "title": "Preface", "page": 12...	Trading	[ "Market Structure", "Price Action", "Trading Strategy" ]
trade_your_way_to_financial_freedom_van_k_tharp	Trade Your Way to Financial Freedom	Van K. Tharp	181	3,463,257	data/pdfs/trade_your_way_to_financial_freedom_van_k_tharp.pdf	data/covers/trade_your_way_to_financial_freedom_van_k_tharp.jpg	data/layouts/trade_your_way_to_financial_freedom_van_k_tharp.json	[]	Trading	[ "Psychology", "Position Sizing", "Risk Management" ]
trades_about_to_happen_david_h_weis	Trades About to Happen: A Modern Adaptation of the Wyckoff Method	David H. Weis	258	6,556,959	data/pdfs/trades_about_to_happen_david_h_weis.pdf	data/covers/trades_about_to_happen_david_h_weis.jpg	data/layouts/trades_about_to_happen_david_h_weis.json	[ { "level": 1, "title": "Half Title", "page": 2 }, { "level": 1, "title": "Series Page", "page": 3 }, { "level": 1, "title": "Title Page", "page": 4 }, { "level": 1, "title": "Copyright Page", "page": 6 }, { "level": 1, "title": "Dedication", ...	Trading	[ "Wyckoff Method", "Price Action", "Tape Reading" ]
trading_systems_and_methods_website_perry_j_kaufman	Trading Systems and Methods	Perry J. Kaufman	1,232	26,731,739	data/pdfs/trading_systems_and_methods_website_perry_j_kaufman.pdf	data/covers/trading_systems_and_methods_website_perry_j_kaufman.jpg	data/layouts/trading_systems_and_methods_website_perry_j_kaufman.json	[ { "level": 1, "title": "Trading Systems and Methods", "page": 3 }, { "level": 1, "title": "Contents", "page": 9 }, { "level": 1, "title": "Preface to the Fifth Edition", "page": 17 }, { "level": 1, "title": "CHAPTER 1 Introduction", "page": 21 }, { ...	Trading	[ "Trading Systems", "Algorithms", "Reference" ]
trading_in_the_zone_mark_douglas	Trading in the Zone	Mark Douglas	143	750,151	data/pdfs/trading_in_the_zone_mark_douglas.pdf	data/covers/trading_in_the_zone_mark_douglas.jpg	data/layouts/trading_in_the_zone_mark_douglas.json	[]	Trading	[ "Psychology", "Mindset", "Discipline" ]
steve_nison_japanese_candlestick_charting_techniquespdf_pdf_	Japanese Candlestick Charting Techniques	Steve Nison	71	5,178,349	data/pdfs/steve_nison_japanese_candlestick_charting_techniquespdf_pdf_.pdf	data/covers/steve_nison_japanese_candlestick_charting_techniquespdf_pdf_.jpg	data/layouts/steve_nison_japanese_candlestick_charting_techniquespdf_pdf_.json	[]	Trading	[ "Candlesticks", "Price Action", "Classic" ]
study_guide_for_technical_analysis_of_the_financial_markets	Study Guide for Technical Analysis of the Financial Markets	John J. Murphy	83	3,041,506	data/pdfs/study_guide_for_technical_analysis_of_the_financial_markets.pdf	data/covers/study_guide_for_technical_analysis_of_the_financial_markets.jpg	data/layouts/study_guide_for_technical_analysis_of_the_financial_markets.json	[]	Trading	[ "Study Guide", "Technical Analysis", "Exercises" ]
designing_machine_learning_systems_chip_huyen	Designing Machine Learning Systems	Chip Huyen	461	10,003,687	data/pdfs/designing_machine_learning_systems_chip_huyen.pdf	data/covers/designing_machine_learning_systems_chip_huyen.jpg	data/layouts/designing_machine_learning_systems_chip_huyen.json	[ { "level": 1, "title": "Preface", "page": 7 }, { "level": 2, "title": "Who This Book Is For", "page": 8 }, { "level": 2, "title": "What This Book Is Not", "page": 10 }, { "level": 2, "title": "Navigating This Book", "page": 12 }, { "level": 2, ...	Machine Learning	[ "Machine Learning", "System Design", "MLOps" ]
hands_on_machine_learning_aurelien_geron	Hands-On Machine Learning with Scikit-Learn and TensorFlow	Aurélien Géron	510	8,140,749	data/pdfs/hands_on_machine_learning_aurelien_geron.pdf	data/covers/hands_on_machine_learning_aurelien_geron.jpg	data/layouts/hands_on_machine_learning_aurelien_geron.json	[ { "level": 1, "title": "Cover", "page": 1 }, { "level": 1, "title": "Copyright", "page": 4 }, { "level": 1, "title": "Table of Contents", "page": 5 }, { "level": 1, "title": "Preface", "page": 13 }, { "level": 2, "title": "The Machine Learning ...	Machine Learning	[ "Machine Learning", "Deep Learning", "Scikit-Learn", "TensorFlow" ]
an_introduction_to_statistical_learning_python	An Introduction to Statistical Learning with Applications in Python	Gareth James, Daniela Witten, Trevor Hastie, Robert Tibshirani	613	20,053,984	data/pdfs/an_introduction_to_statistical_learning_python.pdf	data/covers/an_introduction_to_statistical_learning_python.jpg	data/layouts/an_introduction_to_statistical_learning_python.json	[ { "level": 1, "title": "Preface", "page": 3 }, { "level": 1, "title": "Contents", "page": 5 }, { "level": 1, "title": "1 Introduction", "page": 12 }, { "level": 2, "title": "An Overview of Statistical Learning", "page": 12 }, { "level": 3, "tit...	Machine Learning	[ "Statistical Learning", "Python", "Data Science" ]
machine_learning_engineering_andriy_burkov	Machine Learning Engineering	Andriy Burkov	296	50,498,504	data/pdfs/machine_learning_engineering_andriy_burkov.pdf	data/covers/machine_learning_engineering_andriy_burkov.jpg	data/layouts/machine_learning_engineering_andriy_burkov.json	[]	Machine Learning	[ "Machine Learning", "ML Engineering", "Best Practices" ]

End of preview.

🍀 Clover Trading Books & Layout Dataset

This repository serves as the high-speed backend CDN for the Clover PDF Reader & Search Engine.

Structure

data/catalog.json: Master index of all books, authors, page counts, and Table of Contents.
data/covers/: Rendered book cover thumbnails.
data/layouts/: Dedicated companion layout JSONs with sub-pixel word bounding boxes [x0, y0, x1, y1].
data/pdfs/: High-resolution optimized PDF book files.

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