Datasets:

Brainquiver
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general-master-en-202608

doc_id int64 0 1.51M	text stringlengths 6 21.5k	token_length int64 4 2.51k	audience stringclasses 10 values	format stringclasses 15 values	seed_data stringclasses 9 values	uniq_ratio float32 0.8 1
0	In today's ever-evolving world, technology has become an integral part of our lives, shaping the way we learn, work, and communicate. The COVID-19 pandemic has only accelerated this trend, forcing educational institutions worldwide to adapt quickly to remote learning models. As such, social studies integration in eleme...	805	college_students	textbook	fineweb	1
1	Introduction: In today's world, cooking has evolved beyond traditional methods such as gas or electric stovetops. Induction cooking using ceramic or glass surfaces has become increasingly popular due to its efficiency, speed, safety, and ease of cleaning. In this section, we will delve into the concept of induction coo...	793	college_students	textbook	fineweb	1
2	Chapter: Cooking Up Comfort: Chemotheapy-Induced Nausea Relief Foods Introduction: Have you ever felt really queasy or sick to your stomach? Maybe after eating something that didn't agree with you, or when you were on a bumpy car ride? Imagine feeling like that all the time, even when you haven't eaten anything unusua...	994	middle_school_students	textbook	fineweb	0.947368
3	Chapter 7: Navigating Orphanage Life - A Safe Haven or a Space of Uncertainty? I. Introduction The concept of orphanages has been prevalent in societies across the globe for centuries. Often perceived as institutions providing shelter, care, and nurturing for children without parental support, these establishments al...	1,102	college_students	textbook	fineweb	1
4	Once upon a time, there was a friendly agency called Gaudette Insurance Agency, Inc. They helped people in the beautiful part of the United States known as New England, which includes the states of Connecticut, Massachusetts, Maine, New Hampshire, Rhode Island, and Vermont. The agency had been around for almost 100 yea...	699	children	story	fineweb	1
5	Course Unit: Understanding Jewish Writers and Their Impact Introduction: Have you ever read a book by a famous author and wondered what makes their stories unique? Well, one important factor can be their cultural background! Today, we're going to dive into the world of Jewish writers and learn how their experiences an...	745	middle_school_students	textbook_unconditionned_topic	fineweb	1
6	A couple of years ago, I was working as an extra on the set of a low-budget British film. It was one of those long shooting days where nothing much happens - standing around for hours, waiting for your scene, then rushing to get dressed, positioned, and ready, only to have the director decide to move on to something el...	732	general	story_reddit	ultrachat	1
7	Course Unit: Family and Community Bonds during Ramadan Welcome to our fascinating journey through one of the most cherished traditions in Islamic culture - Ramadan! During this holy month, Muslims around the world come together to strengthen their faith, character, and relationships with loved ones. Today, we're going...	757	middle_school_students	textbook	fineweb	1
8	Course Unit: Understanding and Enjoying Films Welcome to our course unit all about films! Have you ever watched a movie that made you laugh, cry, or feel scared? That's because movies are a powerful way to tell stories and evoke emotions. But have you ever wondered how filmmakers create such magical experiences? Let's...	706	middle_school_students	textbook_unconditionned_topic	fineweb	1
9	Introduction: The Art of Crafting Vegan Sandwich Delights Sandwiches occupy a unique space in culinary culture - they are versatile, convenient, and can cater to a wide range of dietary preferences and restrictions. In particular, creating delicious vegan sandwiches requires creativity, open-mindedness, and an appreci...	1,636	college_students	textbook	fineweb	1
10	Welcome to an exciting journey through the world of comic book heroes! Today, we're going to learn about a fantastic character named Fandral the Dashing. You might have heard of superheroes like Spider-Man or Iron Man before, but there are many other incredible characters out there waiting to be discovered. So let's di...	749	middle_school_students	textbook_unconditionned_topic	fineweb	1
11	Title: How to Make a Secret Shake Introduction: Creating a secret shake can be an enjoyable and creative process. It's an excellent way to surprise your friends or family with a unique blend of flavors. This tutorial will guide you through making a delicious secret shake that is sure to impress. The steps are simple y...	821	general	wikihow	wikihow	1
12	Chapter Title: Understanding Different Types of Thinkers: Intellectuals vs. Action-Oriented People Introduction: Have you ever wondered why some people spend a lot of time thinking and analyzing while others prefer taking immediate action? This chapter will help you understand two types of thinkers - intellectuals and...	769	middle_school_students	textbook_unconditionned_topic	fineweb	1
13	Title: Discovering Alien Arithmetic: A Hilarious Adventure with Base Conversions It all started when my friend sent me a perplexing math problem out of the blue: find the value of $b$ that satisfies the equation $161_{b}+134_{b}=315_{b}$. At first glance, it looked simple enough-just some addition of numbers written i...	633	general	story_reddit	openhermes2.5	1
14	Meet Chris, a superhero of supplies! Just like how Batman protects Gotham City and Wonder Woman keeps peace in her homeland, Chris uses his skills as a supply chain professional to help people all around the world get what they need. From medicine in Kenya to airplane fuel in Africa, he works hard to ensure that import...	636	middle_school_students	textbook_unconditionned_topic	fineweb	1
15	Chapter 10: Music Business Aspects - Record Label Management I. Introduction A record label serves as both a creative platform and a business entity for musicians and bands. It acts as a mediator between artists and audiences by handling various aspects such as recording, marketing, distribution, promotion, and publi...	1,198	college_students	textbook	fineweb	1
16	Course Unit: Exploring Coriander: A Tasty and Healthy Herb Introduction: Have you ever heard of coriander before? It's a delicious herb that adds flavor to many popular dishes around the world! But did you know that every part of the coriander plant can be eaten? That includes the leaves, stems, seeds, and even the ro...	708	middle_school_students	textbook_unconditionned_topic	fineweb	1
17	Chapter 10: Keeping Your Strings Singing - Instrument Maintenance and Repair Have you ever heard someone playing a beautifully sad song on a violin? Or maybe you've tapped your foot along with a catchy tune played on a double bass at a concert. Music created using string instruments can evoke powerful emotions and bri...	816	middle_school_students	textbook	fineweb	1
18	Course Unit: Themed Settings and Storytelling in Toy Restoration I. Introduction Toys are not merely objects of amusement; they serve as vessels of memory, nostalgia, and storytelling. This course unit will delve into the art of toy restoration, specifically exploring how to create themed settings and narratives with...	1,293	college_students	textbook	fineweb	1
19	## Factorial Numbers and Factoradic Representation In mathematics, factorial of a number $$n$$, denoted as $$n!$$, is the product of all positive integers less than or equal to $$n$$. For example, the factorial of 5, denoted as $$5!$$ is calculated as: $$5! = 5 \times 4 \times 3 \times 2 \times 1 = 120$$ Factorial n...	1,062	college_students	textbook	auto_math_text	0.851852
20	Title: How to Evaluate Competency to Stand Trial in Forensic Psychology Step 1: Understand the Concept of Competency to Stand Trial Competency to stand trial refers to a defendant's mental state and ability to understand and participate in legal proceedings. This assessment falls under forensic psychology, which invol...	855	general	wikihow	fineweb	1
21	Chapter 14: Understanding Kolmogorov Complexity and How It Relates to Our Bodies Imagine you are telling a story using only numbers. You might use the number 10 to represent your age, or 3 to describe the number of siblings you have. But what if you wanted to tell a more complicated story? What if you wanted to explai...	680	middle_school_students	textbook	fineweb	1
22	Title: How to Create a Beautiful Fall-Themed Wreath for Your Home Step 1: Gather Your Materials To create a stunning fall-themed wreath, you will need the following materials: * A wire wreath form (available at most craft stores) * Artificial fall foliage, such as leaves, berries, sunflowers, and pumpkins (consider b...	589	general	wikihow	fineweb	1
23	Chapter 10: Particle Detectors - Catching Tiny Particles in Action Have you ever imagined being able to see tiny particles that zoom around us at incredible speeds? Welcome to the world of particle physics! One of the most fascinating aspects of this field is using special tools called particle detectors to study thes...	732	middle_school_students	textbook	fineweb	1
24	Course Unit: Understanding International Religious Freedom through Interfaith Dialogue In today's globalized world, it has become increasingly important to understand the complex issues surrounding international religious freedom. This course unit will delve into this critical issue by exploring the concept of interfa...	1,326	college_students	textbook	fineweb	1
25	Chapter 10: Exploring Different Types of Rabbits and How to Care For Them Have you ever wondered about all the different types of rabbits that exist? There are many unique breeds, each with its own distinct characteristics! Two such breeds are the Californian and New Zealand rabbits, which are quite famous in the meat...	867	middle_school_students	textbook_unconditionned_topic	fineweb	1
26	Course Unit: "Understanding Different Religions and Faiths" Have you ever wondered about all the different religions and beliefs in the world? Have you noticed how people from various faiths practice their traditions and celebrate their holidays differently? In this course unit, we will explore what religion means and...	701	middle_school_students	textbook	fineweb	1
27	Course Unit: European Modernism in World Literature Module 1: Introduction to European Modernism European Modernism emerged during the late nineteenth and early twentieth centuries as a response to rapid industrialization, urbanization, and societal change. This movement encompassed various art forms, including liter...	807	college_students	textbook	fineweb	1
28	Course Unit: Religion and Law in Different Countries Imagine you are visiting a new country with your family. This country has its own set of rules and regulations that everyone must follow, just like how we have laws in our own country. But did you know that some countries also have special laws when it comes to reli...	585	middle_school_students	textbook_unconditionned_topic	fineweb	1
29	In the vast tapestry of world literature, there exists a rich and diverse array of voices that have emerged from the continent of South America. Among these, the "Boom Generation" occupies a unique and significant place in the literary landscape. Comprising a group of innovative writers who gained prominence during the...	959	college_students	textbook	fineweb	1
30	Welcome to our Performing Arts class! Today, we will explore Short-Form Improv, which is like playing theater games where you create funny scenes using suggestions from your audience. It's all about being quick-witted, creative, and working together as a team. Let's dive into this fascinating world! Imagine you are at...	754	middle_school_students	textbook	fineweb	1
31	Once upon a time, in a magical land called Bodymindville, there lived tiny little beings called Chakra Guides. These guides lived inside everyone who lived in Bodymindville, including humans, animals, and plants. Each person had seven special Chakra Guides living inside them, each responsible for taking care of differe...	570	children	story	fineweb	1
32	Welcome to our lesson about online casinos and how they work! Have you ever heard of websites where people can play games and potentially win money? These places are called online casinos, and today we'll learn about them and how people use them. First, let's talk about how someone can add money to their account at an...	529	middle_school_students	textbook_unconditionned_topic	fineweb	1
33	## OpenCV and Image Processing in Python OpenCV is a popular library used for image processing, machine learning, and computer vision. It was built to provide a common infrastructure for computer vision applications and to accelerate the use of machine perception in commercial products. In this section, we will explor...	1,379	college_students	textbook	auto_math_text	0.854839
34	Chapter 9: Understanding Trade - Fair and Free! Imagine you've just made some delicious homemade cookies and want to share them with your friends at school. You could keep all the cookies for yourself, but giving them to others will make both you and your friends happy! Now, what if one of your friends lives far away?...	732	middle_school_students	textbook_unconditionned_topic	fineweb	1
35	Chapter Title: Feeling Alone Together: Exploring Alienation and Isolation in Literature Have you ever felt like you don't quite fit in? Like there's a wall between you and everyone else around you? Maybe you moved to a new town where you didn't know anyone, or perhaps you found yourself struggling to connect with your...	664	middle_school_students	textbook	fineweb	1
36	Welcome to our exploration of Dylan Thomas's modernist experimentation! We will journey through his unique style and learn how he contributed to the richness of English literature. Imagine you are reading a poem that doesn't follow any rules - lines with varying lengths, words arranged in unusual ways, and rhymes that...	609	middle_school_students	textbook	fineweb	1
37	Course Unit: Juvenile Fiction and Soccer Tournaments I. Introduction Juvenile fiction encompasses stories written specifically for children and young adults. These narratives often explore themes relevant to this age group, such as self-discovery, friendship, and personal growth. When it comes to sports-themed juveni...	795	college_students	textbook	fineweb	1
38	Welcome to the fascinating world of electrical and computer engineering! You might be wondering what that even means. Well, imagine being able to create cool gadgets, like robots, video games, and super fast computers! That's exactly what electrical and computer engineers do. They use science and math to design, build,...	545	middle_school_students	textbook_unconditionned_topic	fineweb	1
39	Module 6: Direct Response Marketing Have you ever received a letter in the mail that asked you to send money to a company in exchange for a special offer? Or maybe you've seen an advertisement online that encouraged you to click a button to learn more about a product and buy it right away? If so, then you've exper...	639	middle_school_students	textbook	fineweb	1
40	The leadership of Gamal Abdel Nasser, president of Egypt from 1954 to 1970, marked a significant turning point in the country's history, particularly in its relationship with Western powers. To understand the context of Nasser's presidency, it is essential to examine earlier events that shaped Egypt's political landsca...	852	college_students	textbook	fineweb	1
41	Chapter 10: Discovering the Great Outdoors - A Journey Along the Historic Oregon Trail Have you ever imagined what it would be like to travel across a vast wilderness, facing challenges and adventures along the way? Well, long before cars, trains, or airplanes existed, people still managed to explore America's beautif...	1,308	middle_school_students	textbook	fineweb	1
42	Imagine if someone got their hands on dangerous weapons that could cause harm to thousands of people! These weapons are called Weapons of Mass Destruction (WMD). To prevent this from happening, countries have come together to create rules about who can buy and sell certain types of technology and equipment that could p...	528	middle_school_students	textbook	fineweb	1
43	I'd like to share a story about my great-great grandfather, George Washington Murray, who was born into slavery in South Carolina in 1853. After emancipation, he overcame numerous challenges to become an influential figure during Reconstruction and beyond. His life exemplifies how the abolition of slavery affected the ...	425	general	story_reddit	ultrachat	1
44	Course Unit: Discovering the Roots of the Violin Introduction: Have you ever heard of a violin? It's a beautiful stringed instrument that creates enchanting music when it's played! But where did this incredible instrument come from? Today, we will embark on a journey through time to explore the fascinating origins and...	721	middle_school_students	textbook	fineweb	1
45	Course Unit: Keeping Watch - The History and Evolution of Security Systems Grade Level: Middle School (6-8) Overview: In this unit, we will explore the fascinating history of security systems! From ancient times to the present day, people have always found ways to protect their homes, families, and valuable possessio...	691	middle_school_students	textbook	fineweb	1
46	Once upon a time, in a colorful town called Popville, there lived many different types of people and animals. Each person and animal had its own unique home and way of life. Some lived in big houses while others lived in small cozy homes. Some ate fruits and vegetables, while others preferred eating bugs or leaves! On...	536	children	story	fineweb	1
47	Title: How to Support a Parent Recovering from Substance Abuse 1. Educate yourself about substance abuse: Before you can effectively support a parent recovering from substance abuse, it's crucial to learn about addiction, its causes, effects, and treatment options. Familiarize yourself with terms such as 'detox,' 'reh...	623	general	wikihow	fineweb	1
48	The bell above the door jangled as Sarah walked into her family's hardware store. She had inherited the business from her father, who had passed away suddenly last year. Since then, she had been struggling to keep up with all the new regulations coming down from Washington. She sighed as she looked around the dusty sh...	642	general	story_morality	ultrachat	1
49	Course Unit: Understanding Hanukkah - A Joyful Jewish Holiday Welcome, Middle School Students! Have you ever heard about a wonderful celebration called Hanukkah? It's an extraordinary festival full of lights, joy, and traditions observed by Jewish communities worldwide. Let's dive into this fascinating holiday togeth...	599	middle_school_students	textbook_unconditionned_topic	fineweb	1
50	Signal Processing: The Magic Behind Communication! Imagine you're sending a secret message to your friend across town using two flashlights. You use one flashlight to send Morse code signals while your friend uses another flashlight to receive them. But what if something happens along the way? Maybe it gets too bright...	715	middle_school_students	textbook	fineweb	1

End of preview. Expand in Data Studio

General · Master · English · 2026-08

English pretraining text, assembled from three public sources, cleaned with one character-level cleaner, and filtered for repetition.

109,337,531 documents and 468,064,046,462 characters.

Composition

Config	Documents	Characters	What it is
fineweb-edu-dedup	65,010,430	297,544,916,118	Web text an educational classifier kept
cosmopedia-v2	38,591,146	144,011,993,012	Synthetic prose from a seeded generator
finemath-4plus	5,735,955	26,507,137,332	Web text a mathematics classifier kept
Total	109,337,531	468,064,046,462

The three configs are separate tables and they are never concatenated here. Load each one by name, for example load_dataset("Brainquiver/general-master-en-202608", "fineweb-edu-dedup").

The character count is exact. The token count is not a field of the name, and not a claim of this card. A token count is a property of a tokenizer. At 4.50 characters per token this corpus is near 104B tokens, against a target of 100B. The real figure follows once the vocabulary is fixed.

Mixture weights are not set here. The corpus holds the sources apart on purpose, so the weight of each one stays a decision of the training stage.

Sources

Config	Repository	Revision	Shards taken
cosmopedia-v2	`HuggingFaceTB/smollm-corpus`	`3ba9d60`	104 of 104
fineweb-edu-dedup	`HuggingFaceTB/smollm-corpus`	`3ba9d60`	80 of 234
finemath-4plus	`HuggingFaceTB/finemath`	`e92b25a`	64 of 64

All three upstream releases are ODC-By 1.0, and this corpus keeps that licence. Two of them derive from CommonCrawl, so a downstream user should also respect the CommonCrawl terms of use.

fineweb-edu-dedup is a contiguous prefix of the release and not a sample of it. We took the first 80 of its 234 shards. Our own shards are numbered from zero and do not carry the upstream numbers, so the audit is where that correspondence is recorded. The count came from a character budget. The target of 100B tokens at 4.50 characters per token is 450B characters. Cosmopedia and finemath supply 180B of that, and one fineweb shard holds about 3.87B. Seventy shards reach the target and eighty leave margin for the filter.

That prefix still spans the whole crawl range. It covers 95 distinct CommonCrawl dumps, from CC-MAIN-2013-20 to CC-MAIN-2024-10. It is not confined to one era. It is, however, not a uniform sample of the release, and the mix is uneven across it. The earliest upstream shard leans toward the 2014 crawls, and shards from the middle of the prefix lean toward 2022 and 2023. Weight by dump if the era matters to your use.

Format

One row is one document. text holds the cleaned prose. doc_id and uniq_ratio are ours and every other column comes from the publisher.

Three columns are common to all configs:

Column	Type	Meaning
`doc_id`	int64	Position of the document in the upstream shard order
`text`	string	The cleaned document
`uniq_ratio`	float32	Distinct non-blank lines over non-blank lines

doc_id counts the upstream row and not the kept row, so it stays a coordinate into the upstream shard after the filter removes rows. The sequence therefore has gaps.

doc_id starts at zero inside each config and does not run across the corpus. The key of a document is the pair of the config and the doc_id. If a later stage concatenates the three configs into one stream, give each config an offset first.

The remaining columns differ, because each publisher recorded different fields:

Config	Publisher columns kept
cosmopedia-v2	`token_length`, `audience`, `format`, `seed_data`
finemath-4plus	`url`, `token_count`, `char_count`, `metadata`, `score`, `int_score`, `crawl`, `snapshot_type`, `language`, `language_score`
fineweb-edu-dedup	`source_id`, `dump`, `url`, `date`, `language`, `language_score`, `token_count`, `score`, `int_score`

source_id is the CommonCrawl record id and not a row number, which is why it does not share the name doc_id. Each token_count and token_length is the publisher's own count, made with a tokenizer that is not ours. Treat it as a threshold and never as a count of our tokens.

One column was dropped. prompt in cosmopedia-v2 holds the instruction that generated each document, it is 25.2 percent of that source, and a language model does not read it.

Cleaning

Every document passes one character-level cleaner, which applies the Brainquiver text cleaning specification in this order:

Repair mojibake, meaning text that was decoded in the wrong encoding once already.
Normalise to NFC. Not NFKC, which would fold distinctions that carry meaning.
Fold every line break convention to a single line feed.
Apply the substitution tables: typographic quotes and dashes become their keyboard equivalents, ligatures expand, and invisible formatting characters go.
Delete controls and unassigned code points.
Collapse whitespace runs. A run of two or more line breaks becomes one blank line. A run of one line break stays one line break. A run of spaces becomes one space.
Trim.

The text is not lowercased. Lowercase is a decision of the corpus owner and its default is off.

Config	Code points before	After	Left	Arrived
cosmopedia-v2	14,975	14,804	208	37
finemath-4plus	27,506	27,749	390	633
fineweb-edu-dedup	36,013	36,269	162	418

Two of the three counts rose. That is not a sign that the cleaner failed. Step 1 repairs mojibake, and a repair restores a true code point as the corrupted bytes go. fineweb gained NKO, Syriac and Arabic-Indic characters this way, because their UTF-8 had been read as cp1252 at the source. Among the code points that left are the C1 controls from U+0080 to U+009F, which are the signature of exactly that fault.

The uniq_ratio filter

uniq_ratio is the count of distinct non-blank lines over the count of non-blank lines. A document of wholly distinct lines scores 1.0, and a document that repeats a navigation block or a question template scores lower. Every row below 0.80 is removed.

Config	Upstream rows	Kept	Removed	Rate	Mean kept	At 1.0
cosmopedia-v2	39,134,000	38,591,146	542,854	1.387%	0.9958	96.1%
finemath-4plus	6,699,493	5,735,955	963,538	14.382%	0.9636	56.4%
fineweb-edu-dedup	65,014,720	65,010,430	4,290	0.007%	0.9990	97.3%

The three sources answer very differently, and the reason is what each publisher did before we received the data. FineWeb applies a Gopher-style repetition filter before its educational classifier runs, so almost nothing is left for this filter to catch. Cosmopedia is generated prose, which rarely repeats itself. finemath is scraped from forums and question banks, and it received neither treatment.

The rejected rows are not published. They stay on the drive, at 3.0 GiB, so that a later reader can confirm the filter took boilerplate and nothing else. Two examples of what it removed from finemath:

At uniq_ratio 0.344, a slide-sharing page: a textbook title, then copyright boilerplate, then a download policy. It is site furniture and holds no mathematics.

At uniq_ratio 0.126, a practice page that repeats one 40-character standards identifier as the heading of every question.

Neither is reachable with the signals the source already carries. Both sit at a quality score of 3.9 to 4.0, which is the tier we preferentially keep.

Intended use

Pretraining an English language model with a causal language modelling objective on text. The other columns exist so a later stage can filter harder, weight a sample, or trace a document back to its page. They are not meant to be part of the training text.

No length filter is applied, and short documents are kept. A consumer that wants a minimum length must apply its own filter. A consumer that packs several documents into one training sequence needs no filter at all.

Limitations

Two of the three sources are web text, so they carry the biases, errors and dated statements of the pages they came from. cosmopedia-v2 is synthetic, generated by a language model, and it inherits that model's biases and its factual errors. Both classifier-selected sources encode a particular idea of quality, and that selection is inherited whole and unexamined. score and int_score are kept but nothing is filtered on them here.

The uniq_ratio filter above removes a document that repeats itself. It never compares one document against another, so it is not a deduplication step. No cross-document deduplication was applied here, beyond what each publisher did upstream.

No filter for personal information has been applied. English only, and the language labels come from upstream classifiers rather than from an independent check.

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