"""Out-of-domain labelled eval set for the AI detector. Deliberately NOT HC3 (the thing the meta-classifier was trained on). These are the kinds of text the tool actually sees: ChatGPT-style essays/abstracts on the AI side, and personal/academic/literary prose on the human side. All samples are >=8 sentences / >=80 tokens so every one of the 7 detectors fires and the meta_hc3 path runs (not the hand-fusion fallback). label: 1 = AI-generated, 0 = human. """ SAMPLES = [ # ============================ AI (label 1) ============================ ("ai_essay_ai", 1, "In today's rapidly evolving digital landscape, artificial intelligence " "plays a crucial role in reshaping how organizations operate. It is " "important to note that machine learning algorithms leverage vast amounts " "of data to deliver actionable insights. Furthermore, these systems " "seamlessly integrate into existing workflows, fostering unprecedented " "efficiency. Moreover, the adoption of robust frameworks underscores the " "significant implications of this technological shift. Additionally, " "businesses must navigate the complexities of implementation to fully " "harness the potential of these tools. Notably, the multifaceted benefits " "extend beyond automation to strategic decision-making. In conclusion, " "harnessing artificial intelligence represents a holistic transformation " "that will define the future of industry for generations to come."), ("ai_essay_climate", 1, "Climate change represents one of the most pressing challenges of our " "time. It is important to note that rising global temperatures have " "far-reaching consequences for ecosystems worldwide. Furthermore, the " "melting of polar ice caps contributes significantly to rising sea " "levels. Moreover, extreme weather events are becoming increasingly " "frequent and severe. Additionally, biodiversity is being disrupted at " "an alarming rate across multiple regions. Notably, vulnerable " "communities bear a disproportionate burden of these impacts. In " "conclusion, addressing climate change requires a comprehensive and " "coordinated global effort to ensure a sustainable future for " "generations to come."), ("ai_essay_education", 1, "Education plays a vital role in shaping the future of society. In " "today's interconnected world, it is important to note that access to " "quality learning opportunities remains uneven. Furthermore, technology " "has the potential to democratize education on an unprecedented scale. " "Moreover, personalized learning platforms leverage data to tailor " "instruction to individual needs. Additionally, educators must adapt to " "this ever-evolving landscape to remain effective. Notably, lifelong " "learning has become essential in a rapidly changing economy. In " "conclusion, embracing innovation in education paves the way for a more " "equitable and prosperous future."), ("ai_abstract_ml", 1, "This study explores the transformative impact of deep learning on modern " "computer vision systems. It is important to note that convolutional " "architectures have revolutionized image recognition tasks. Furthermore, " "the proposed framework leverages attention mechanisms to enhance feature " "extraction. Moreover, extensive experiments demonstrate the robustness " "of the approach across diverse datasets. Additionally, the results " "underscore significant improvements in both accuracy and efficiency. " "Notably, the model seamlessly generalizes to previously unseen domains. " "In conclusion, this comprehensive analysis highlights the potential of " "intelligent systems to drive innovation in the field."), ("ai_essay_health", 1, "Maintaining a healthy lifestyle is essential for overall well-being. It " "is important to note that regular physical activity plays a crucial role " "in preventing chronic disease. Furthermore, a balanced diet provides the " "essential nutrients the body needs to function optimally. Moreover, " "adequate sleep is fundamental to both physical and mental health. " "Additionally, managing stress through mindfulness can significantly " "improve quality of life. Notably, small consistent changes often yield " "the most sustainable results. In conclusion, adopting a holistic " "approach to health empowers individuals to lead fuller, more vibrant " "lives."), ("ai_essay_remote", 1, "Remote work has fundamentally transformed the modern professional " "landscape. It is important to note that flexible arrangements offer " "employees unprecedented autonomy. Furthermore, organizations can access " "a global talent pool unconstrained by geography. Moreover, digital " "collaboration tools seamlessly bridge the gap between distributed teams. " "Additionally, companies must navigate the complexities of maintaining " "culture in a virtual environment. Notably, the boundary between work and " "personal life requires careful management. In conclusion, embracing " "remote work thoughtfully paves the way for a more adaptable and " "resilient workforce."), ("ai_essay_social", 1, "Social media has become an integral part of contemporary communication. " "It is important to note that these platforms connect billions of people " "across the globe. Furthermore, they empower individuals to share ideas " "and mobilize communities. Moreover, businesses leverage social channels " "to engage audiences in meaningful ways. Additionally, concerns regarding " "privacy and misinformation continue to grow. Notably, the psychological " "impact on younger users warrants careful consideration. In conclusion, " "harnessing the benefits of social media while mitigating its risks " "remains a critical challenge for society."), ("ai_essay_finance", 1, "Personal financial management is a cornerstone of long-term stability. " "It is important to note that budgeting forms the foundation of sound " "financial planning. Furthermore, building an emergency fund provides a " "crucial safety net against unforeseen circumstances. Moreover, " "diversified investments leverage the power of compounding over time. " "Additionally, individuals must navigate the complexities of debt " "management carefully. Notably, financial literacy empowers people to " "make informed decisions. In conclusion, adopting disciplined financial " "habits paves the way for lasting security and peace of mind."), ("ai_essay_urban", 1, "Urbanization is reshaping the way societies live and interact. It is " "important to note that cities are expanding at an unprecedented pace " "worldwide. Furthermore, sustainable infrastructure plays a crucial role " "in accommodating growing populations. Moreover, smart technologies " "seamlessly optimize the management of urban resources. Additionally, " "planners must navigate the complexities of balancing growth with " "livability. Notably, green spaces contribute significantly to residents' " "well-being. In conclusion, embracing thoughtful urban design fosters " "resilient and inclusive communities for the future."), ("ai_essay_nutrition", 1, "Proper nutrition is fundamental to sustaining human health and vitality. " "It is important to note that macronutrients provide the energy the body " "requires daily. Furthermore, micronutrients play a crucial role in " "supporting essential biological processes. Moreover, hydration " "significantly influences both cognitive and physical performance. " "Additionally, mindful eating fosters a healthier relationship with food. " "Notably, dietary needs vary considerably across individuals. In " "conclusion, embracing a balanced and informed approach to nutrition " "underscores the path to lasting wellness."), ("ai_essay_space", 1, "Space exploration continues to capture the imagination of humanity. It " "is important to note that recent advances have dramatically reduced the " "cost of reaching orbit. Furthermore, reusable rocket technology " "leverages engineering innovation to enable frequent launches. Moreover, " "international collaboration fosters unprecedented scientific discovery. " "Additionally, ambitious missions seek to establish a sustained human " "presence beyond Earth. Notably, these endeavors inspire new generations " "of scientists and engineers. In conclusion, harnessing the potential of " "space exploration paves the way for a remarkable future among the " "stars."), ("ai_essay_ethics", 1, "The ethics of artificial intelligence has emerged as a critical area of " "inquiry. It is important to note that algorithmic decisions increasingly " "shape everyday life. Furthermore, questions of fairness and bias demand " "careful scrutiny. Moreover, transparency plays a crucial role in " "building public trust. Additionally, developers must navigate the " "complexities of accountability in automated systems. Notably, robust " "governance frameworks are essential to responsible deployment. In " "conclusion, fostering an ethical approach to artificial intelligence " "underscores our collective responsibility to society."), # ============== SUBTLE / HUMANIZED AI (label 1) — the realistic case ==== # AI-drafted then lightly edited: contractions added, stock phrases # stripped, sentence lengths varied. No single detector should spike to 85, # so the R1 override never fires and the meta classifier decides alone. ("subtle_ai_productivity", 1, "Productivity isn't really about doing more things. It's about doing the " "right ones, and most advice gets that backwards. People download another " "app, buy another planner, and wonder why nothing changes. The truth is " "simpler. You pick two or three tasks that actually move the needle, and " "you protect the time for them. Everything else can wait, or not happen at " "all. I've found that mornings work best for deep focus, before the inbox " "wakes up. Afternoons are for the shallow stuff, the calls and the admin. " "It took me years to learn that rhythm. Most days I still get it wrong, " "but the framework helps me recover faster."), ("subtle_ai_coffee", 1, "There's a quiet ritual to making coffee that I didn't appreciate until " "recently. You heat the water, but not to boiling, because that scorches " "the grounds. You wait for the bloom, that little rise of foam when fresh " "coffee meets water. It only lasts a moment. Then you pour slowly, in " "circles, and the whole kitchen starts to smell like morning. I used to " "rush it, hitting a button on a machine and walking away. Now I stand " "there and wait. It's four minutes I didn't think I had, and somehow they " "set the tone for the day. Small thing. But it stuck."), ("subtle_ai_language", 1, "Learning a language as an adult is humbling in a way few things are. You " "spend decades being articulate, and then suddenly you're reduced to " "pointing at things and smiling. The grammar rules pile up faster than you " "can absorb them. Verbs refuse to behave. And just when you think you've " "got a handle on it, a native speaker says something at full speed and " "you're lost again. But there's a turning point. One day you catch a joke, " "or you dream in the new language, and it clicks that you're actually " "getting somewhere. That moment makes the months of feeling stupid worth " "it. At least that's what I tell myself."), ("subtle_ai_garden", 1, "My first attempt at a vegetable garden was mostly a failure, and I " "learned more from it than any success would have taught me. The tomatoes " "got blight. The slugs ate the lettuce before I did. I'd planted " "everything too close together because I was impatient and optimistic. But " "a few things survived. The herbs, weirdly, thrived on neglect. The beans " "climbed higher than I expected. By the end of summer I had a handful of " "things I'd actually grown, and they tasted better for the trouble. This " "year I'm starting smaller and paying closer attention. Gardening, it " "turns out, is mostly patience with a bit of dirt."), ("subtle_ai_reading", 1, "I fell out of the habit of reading for a few years and didn't notice " "until I tried to pick it back up. My attention had gone soft. I'd read a " "page and realize I'd absorbed nothing, my mind already drifting to my " "phone. So I started small, ten minutes a night, no pressure. The first " "week was rough. But slowly the muscle came back. Now I can sink into a " "book again and lose an hour without noticing. It feels like reclaiming " "something I'd let slip away without meaning to. We talk about screen time " "as a distraction, but really it's a thief. It takes the quiet hours and " "gives nothing back."), ("subtle_ai_running", 1, "Nobody tells you that running is boring at first, which is probably why " "so many people quit. The first few weeks your lungs burn and your legs " "complain and the whole thing feels pointless. You're slow. Everyone " "passing you seems effortless. But if you push through that ugly early " "stretch, something shifts. The runs get easier, then almost pleasant. You " "start to crave them on the days you skip. I'm not fast and I never will " "be, but I keep going out there. It clears my head better than anything " "else I've tried. Some mornings that's the only reason I lace up at all."), # ============================ HUMAN (label 0) ========================== ("human_personal_job", 0, "I've been thinking about why I quit my last job, and honestly it wasn't " "one big thing. It was a hundred small ones. The coffee machine that " "never worked. The meetings that could've been emails. My manager, who " "wasn't a bad guy really, but he had this habit of saying circle back and " "never actually circling back. I stayed two years longer than I should " "have. Why? Fear, mostly. The devil you know. But then one Tuesday I just " "couldn't open my laptop. Sat there staring at the lid. I handed in my " "notice that Friday. Best thing I ever did, though it didn't feel like it " "at the time."), ("human_bus", 0, "The bus was late again. Twenty minutes, in the rain, and my umbrella has " "a broken rib so it sort of flops sideways. A guy next to me was eating " "crisps really loudly. I tried to read but kept losing my place. When the " "bus finally came it was packed, no seats obviously. I held the rail and " "watched the city slide past, all grey and wet, and thought about nothing " "in particular. Got to work eight minutes late. Nobody noticed, or cared. " "Funny how some mornings just decide to be like that."), ("human_academic_polymer", 0, "This paper investigates the thermal degradation kinetics of recycled " "polypropylene under cyclic processing conditions. Samples were subjected " "to up to seven extrusion cycles and characterized using differential " "scanning calorimetry and melt flow index measurements. Results indicate " "a progressive reduction in molecular weight, accompanied by a measurable " "increase in the melt flow index after the third cycle. The crystallinity " "of the reprocessed material decreased by approximately twelve percent " "relative to the virgin polymer. We attribute this behaviour to chain " "scission induced by thermomechanical stress. Further work is required to " "assess the role of stabilizing additives in mitigating degradation."), ("human_academic_econ", 0, "We examine the relationship between minimum wage increases and youth " "employment using a panel of forty-three regional labour markets observed " "between 2004 and 2017. Our identification strategy exploits the staggered " "timing of statutory increases across jurisdictions. We find a small but " "statistically significant negative effect on employment among workers " "aged sixteen to nineteen, concentrated in the retail and hospitality " "sectors. The estimated elasticity is broadly consistent with the lower " "bound of prior literature. We caution that general equilibrium effects " "may attenuate these estimates over longer horizons. Robustness checks " "using alternative control groups yield qualitatively similar results."), ("human_literary", 0, "It was the best of times, it was the worst of times, it was the age of " "wisdom, it was the age of foolishness. We had everything before us, we " "had nothing before us. The streets were thick with mud and the lamps " "burned low against the fog. A man hurried past with his collar turned up, " "glancing once over his shoulder. Somewhere a dog barked and fell silent. " "The whole city seemed to hold its breath, waiting for something it could " "not name. And still the river ran black beneath the bridges, carrying its " "secrets out to sea."), ("human_forum", 0, "Okay so I tried the fix someone posted above and it kind of worked but " "not really? Like the error went away but now the app crashes on startup " "instead, which is arguably worse lol. I'm on Windows 11, Python 3.10 if " "that matters. Spent the whole evening on this. Ended up just rolling back " "to the old version and honestly it's fine for now. If anyone figures out " "the actual root cause please post it, I'm genuinely curious what's going " "on under the hood. Might dig into it again this weekend if I have the " "energy. Thanks for the help so far everyone."), ("human_memoir", 0, "My grandmother kept her money in a biscuit tin on top of the wardrobe. " "Not because she didn't trust banks exactly, but because she'd lived " "through a time when trusting them hadn't worked out. She counted it every " "Sunday after church, smoothing each note flat on the kitchen table. I " "used to watch from the doorway, not allowed in until she was done. When " "she died we found the tin half empty and a list, in her handwriting, of " "everyone she'd quietly been helping. None of them knew it was her. That " "was the kind of person she was."), ("human_academic_bio", 0, "We characterized the gut microbiome composition of forty wild-caught " "field mice across four distinct habitat types. Sixteen S ribosomal RNA " "sequencing revealed significant variation in bacterial diversity " "correlated with local vegetation density. Individuals from fragmented " "habitats exhibited reduced microbial richness relative to those from " "continuous woodland. We observed a notable enrichment of Firmicutes in " "agricultural margin populations. These patterns suggest that landscape " "structure shapes host-associated microbial communities. The functional " "consequences of these differences remain to be determined. Our findings " "contribute to a growing understanding of wildlife microbiome ecology."), ("human_travel", 0, "We got lost twice trying to find the guesthouse, which is pretty normal " "for us. The map app kept rerouting us down these tiny alleys that dead " "ended at someone's laundry line. Eventually an old man pointed us in the " "right direction without saying a word, just a sort of tired wave. The " "room smelled of incense and damp but the view made up for it. You could " "see the whole harbour from the window. We ate noodles from a cart that " "night and they were the best thing I've had in months. I'd go back " "tomorrow if I could."), ("human_opinion", 0, "I don't buy the argument that everyone needs to learn to code. It gets " "repeated like gospel and nobody questions it. Sure, some basic literacy " "about how software works is useful, I'll grant that. But telling a " "talented nurse or a carpenter that they're falling behind because they " "can't write a for loop? That's just snobbery dressed up as advice. People " "have different strengths. The world needs all of them. We've somehow " "convinced ourselves that one narrow skill is the only ticket to a decent " "life, and I think that's both wrong and a little sad."), ("human_diary", 0, "Didn't sleep well again. The neighbour's renovation starts at seven sharp " "and there's no arguing with a concrete drill. Made coffee too strong and " "drank it anyway. The cat knocked a glass off the counter and looked at me " "like I was the one who did it. Work was work. Sent the report, finally, " "after putting it off for a week for no good reason. Walked home the long " "way past the park because the light was nice. Small things. But some days " "the small things are the only things that go right, and you take them."), ]