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GANs: The Polished Academic Paper vs. The Unhinged Reality
AI ML Post #3210, on Jun 10, 2021 in TG

GANs: The Polished Academic Paper vs. The Unhinged Reality

Why is this AI ML meme funny?

Level 1: Expectations vs Reality

Imagine you see a commercial for a new art kit that promises you can draw Lisa Simpson perfectly. In the commercial (expectation), the drawing of Lisa that they show is amazing – she’s wearing a beautiful dress, her eyes and smile are just right, she looks like a star. Now you buy the kit and try it at home. In reality, the picture you draw of Lisa comes out looking a little… funny. Her eyes are kinda crossed, her face is a bit wonky, and she’s not looking like the elegant Lisa you hoped for. You’d probably laugh and say, “Huh, mine didn’t turn out like the one on TV!”

This meme is funny for the same reason. The left side is like the perfect commercial or promo shot – it’s what we hope to get. The right side is what we often actually get – a silly, messed-up version. It’s like when a fast-food ad shows a big, perfect burger, and then you open your burger and it’s flat, messy, and nothing like the picture. In the meme, the research paper is like the ad promising something great (the pretty Lisa), and using the AI model in real life is like opening the burger you got (the goofy Lisa). We laugh because we all know things in ads or fancy demos usually look better than they really are. It’s a playful reminder: sometimes things don’t work out as perfectly in real life as they appeared in the showcase, and that contrast is both relatable and humorous.

Level 2: GANs & Glitches

Let’s break down what’s happening in this meme in simpler terms, especially for those newer to MachineLearning and DeepLearningModels. We have a type of AI model here called a GAN, which stands for Generative Adversarial Network. What does that mean? It’s basically two neural networks playing a game with each other:

  • One network is the generator. Its job is to create new images (in this case, images of Lisa Simpson) from scratch – like an art student trying to paint Lisa from memory.
  • The other network is the discriminator. Its job is to look at images and tell which ones are real (drawn from the actual Simpsons) and which ones are fake (produced by the generator). Think of this as the art critic or inspector.

They’re called “adversarial” because the generator and discriminator are set up like opponents. The generator wants to fool the discriminator with its fake images, and the discriminator wants to catch the generator’s fakes. As training goes on, the generator is supposed to get better and better at drawing realistic images (so it can trick the discriminator), and the discriminator gets better at spotting fakes. It’s a clever idea: they improve by competing with each other, no human telling them what the “right” Lisa Simpson drawing is – the generator just learns from feedback like “Nope, the discriminator caught that one, try something else.” Over time, if all goes well, the generator can produce images that even the discriminator can’t tell are fake, meaning they look real.

Now, in academic_papers and research demos, when they show results from a GAN, they usually display a few of the best images the generator made. So, maybe out of thousands of generated Lisa Simpson pictures, they’ll pick the ones where Lisa looks perfect – correct face, proper smile, no weird eye wonkiness – and put those in the paper. That’s what the left side of the meme is referring to: “Showcased GAN Output in Papers” is like saying “Here’s the ideal, beautiful example of what our GAN can do.” Lisa in the left image is stylish, on-model (exactly how she should look), basically flawless. It’s like the GAN nailed it – you’d think a professional cartoonist drew her. This matches the polished_vs_reality tag: the left is the polished part.

Now let’s talk about the right side: “Actual GAN Output.” This is the reality that developers and engineers often see when they actually run the GAN model themselves or try to use it outside that perfect lab setting. Lisa on the right… well, she’s a bit off, isn’t she? Her eyes are crossed strangely, her nose is elongated, her grin is awkward. She looks goofy and distorted. This isn’t some random choice – it’s illustrating the kind of image_generation_artifacts and errors that GANs (and other DeepLearningModels) frequently produce in practice. An “artifact” in this context means a weird quirk or glitch in the generated image that shouldn’t be there if the image were truly realistic. For example: an extra finger on a hand, a misshapen nose, or eyes that don’t align properly. These happen because the model is making its best guess at how to put together a realistic image, but it doesn’t always get every detail right, especially if it hasn’t seen enough examples or got confused during training. The right Lisa’s crossed eyes and odd smile are artifacts of a model that hasn’t perfected the art of drawing a Lisa from scratch.

Why might a GAN produce such a weird-looking Lisa? There are a few common reasons:

  • Mode collapse: This is a jargon term (one of those pieces of AIHumor among practitioners) for when the generator gets lazy or “stuck.” Instead of drawing all sorts of different Lisas (happy Lisa, sad Lisa, side-profile Lisa, etc.), it finds one version that kinda-sorta works and just repeats that. Imagine an art student who learned one way to draw a face and now every face they draw looks the same. If that one learned face has an error – say, the eyes are too close – then every face they draw will carry that error. Mode collapse in a Simpsons GAN could mean the generator produces the same Lisa face over and over, maybe with tiny variations, but it’s really just one idea of a face. If that idea was flawed, all outputs share the flaw (hence many goofy-looking Lisas). The term mode refers to a “mode of the data distribution,” basically a type or cluster of images; collapsing to one mode means missing all the variation.
  • Overfitting: Another key term from the tags (OverfittingModels). Overfitting means the model memorized its training data too closely. If the GAN saw, say, 100 pictures of Lisa and it overfit, it might not have learned the concept of Lisa (abstracting features like “spiky hair, yellow skin, pearl necklace in various positions”). Instead, it might have just sort of stitched together bits of actual training images in a patchwork. The result can look like a blurry or distorted version of a real image – because the model isn’t truly creating something new, it’s recalling something imperfectly. Overfitting often leads to poor results on any data that’s even a little different from what it saw during training. So if you try to use the GAN in a slightly new context (maybe generating Lisa in a scenario that wasn’t exactly in the training set), it doesn’t know what to do and shows strange outputs.
  • Dataset bias: This means the training data might have been incomplete or biased in some way. For example, if all the example images of Lisa in the training set were from episodes where she was smirking from a side angle, the GAN might think that’s just how Lisa always looks. Then, when it tries to draw Lisa facing forward, it doesn’t actually “know” how to – it was never taught that from the data! The result could be something anatomically incorrect like crossed eyes or a wonky face because the model is basically guessing. Bias can also mean maybe it saw Lisa mostly in the day outside, so if it tries to draw her indoors or at night, the colors and lighting get weird. The tag dataset_bias is hinting that the real-world data vs the curated data difference matters. In a paper, researchers might use a nicely balanced dataset (or just luckily have data that covers only the scenario they test), but when you run the model on other images or a different dataset, those biases show up glaringly.

Now think about model_demo_vs_production: This phrase is about the difference between showing a controlled demo of a model (like in a research environment or a press release) and actually deploying that model in the real world (production). In demos, everything is controlled. The researchers know which inputs the model handles well and often present exactly those cases. In production, users or other systems might throw all sorts of unexpected inputs at the model. It’s like only ever showing how a voice assistant works in a quiet room (demo), versus people using it in a noisy street or with heavy accents (production). The performance often drops in the latter case. For our GAN meme, the paper’s demo of the GAN might have only shown the best-case outputs on the test dataset similar to training. But your attempt to use it (production scenario) might involve different kinds of inputs or just reveal the average-case output quality, which includes funky ones.

A great way to understand the meme is to compare it to something outside of AI:

  • Think of polished_vs_reality in terms of, say, food ads. In a Burger Queen commercial (the “paper demo”), the burger looks huge, perfectly stacked, everything in place (that’s left-panel Lisa, perfect and stylized). But when you actually buy that burger (“actual production use”), it’s smaller, kinda smooshed, maybe the lettuce is hanging out (that’s right-panel Lisa, looking all wrong). The AIHypeVsReality joke here is just the AI version of that classic expectation vs reality gag.

Another example: the left image is like a promo photo of a product, and the right image is like a quick snapshot of the product when you use it at home. Researchers essentially do “promo photos” of their model’s results. They’ll run the model many times and select some especially good-looking outputs to publish. Meanwhile, when you use it at home, you’re seeing every output, not just the Instagram-filtered ones.

The phrase AI limitations and AILimitations appears in tags, reminding us that these artificial intelligence models, as impressive as they are, have a lot of constraints. They’re not as all-powerful or general as they sometimes appear in press releases. A GAN that generates amazing results under specific conditions might still fail in other scenarios. We as engineers and learners have to remember that what we see in papers is often the best-case scenario. The meme is a funny way to poke at that: “Sure, your GAN can produce a glamorous Lisa (once in a blue moon), but look at what it gives me most of the time – a goofy goblin Lisa!”

Finally, note the use of Lisa Simpson here: even if you’re not deeply into Simpsons, Lisa is a well-known cartoon character with a distinct look. Using her in the meme is clever because any distortion of Lisa is instantly recognizable. If one eye is off, or the smile is weird, you notice it immediately – and it looks wrong. That exaggerates the effect. If it were a random face, you might not instantly tell what’s wrong, but with Lisa, everyone knows how she should look. So seeing her look derpy drives the point home. This is similar to how in ML, using a known reference (like a famous character or a clear pattern) helps quickly illustrate success vs failure.

In summary for a junior developer or someone new: the meme is comparing the expectation set by fancy AI research (left image) with the reality of actually working with that AI in the real world (right image). It introduces terms like GAN, mode collapse, overfitting, etc., which are reasons why reality often falls short. The humor comes from recognizing that gap – it’s a wink to all the newbies: “Don’t worry if your results look more like right-Lisa than left-Lisa; that’s normal! We’ve all been there and that’s why we joke about it.”

Level 3: SOTA vs So-So

Every experienced ML engineer chuckles (with a hint of pain) at this meme because it captures the classic AIHypeVsReality scenario in the world of generative models. SOTA vs So-So is a tongue-in-cheek way to say “State-Of-The-Art in papers versus so-so output in practice.” On the left, we have Lisa Simpson all dolled up, representing those impressive, cherry-picked results you see in conference papers – the kind that make academic_papers reviewers go “wow.” On the right, we have Lisa looking like a glitch in The Matrix – representing what you actually get when you run that same gan model on your own machine with your own data. It’s the AI humor equivalent of a before-and-after fail. Seasoned developers know exactly why this happens, and that’s what makes the joke land so well.

Why is the combination of elements so humorous? It’s the stark contrast and the recognition factor. The left image (polished Lisa) is the promise of a breakthrough Generative_Adversarial_Networks model as portrayed by its creators: flawless and elegant. The right image (goofy Lisa) is the reality that engineers see: quirky errors, mismatched features – basically the limitations of AI slapped right on a familiar cartoon face. Many of us have watched a slick conference demo or read a paper claiming “close-to-perfect” generated images (research_paper_pr in full swing, almost like an ad campaign for the model) and thought “This is amazing!” – only to later be brought down to earth when trying it ourselves. The meme nails that disillusionment with a single side-by-side visual gag. It says, without words: “What the paper showed vs what we actually got.” This pattern is a rite of passage in MachineLearning development, almost a running joke in the field.

Shared trauma and real-world scenarios: If you’ve ever tried to implement a cutting-edge GAN from a research paper, you’ve likely experienced the frustration behind those two Lisa Simpson faces. Perhaps you spent days wrangling the code from GitHub (if the authors even released it), installed all the right dependencies, maybe even pip install fancy-gan==1.0, only to find the sample outputs look nothing like the glossy examples from the paper’s Figure 1. Instead of perfectly generated Simpsons-style characters, you get images that look like Lisa’s long-lost mutant cousin. Those crossed eyes and the awkward grin on the right aren’t random – they’re exactly the kind of image_generation_artifacts one sees when a GAN hasn’t generalized well. Maybe the generator latched onto some weird combination of features that technically fooled the discriminator during training (perhaps the network found that adding a blob here or there didn’t raise alarms in the loss function), but to a human it’s obviously off. There’s a knowing laughter in the ML community about this: “Yup, seen those crazy artifacts before – my GAN once gave every generated cat two tails!” It’s a mix of commiseration and humor derived from the shared experience of models misbehaving.

Several notorious failure modes are being satirized here:

  • Mode collapse: As mentioned, this is when a GAN’s generator decides to output the same type of image over and over because it found one thing that works “well enough” to trick the discriminator. Imagine a GAN trained to generate Simpsons characters that figures out “Hey, drawing a generic Lisa-like face with a fixed weird grin fools the detector!”, so it just produces that over and over. To the researcher trying one quick run, many outputs might look uncannily identical or similarly distorted. In the meme’s right panel, Lisa’s odd expression could be what the model converged to for all characters – a single mode (one facial configuration) that doesn’t capture the variety of real Lisa Simpson expressions. Mode collapse is a bane of GAN practitioners; it’s something papers often gloss over when showcasing best results. They might not mention that 90% of the outputs were nearly the same or had defects, as long as a few looked great for the paper figures.
  • Overfitting: This is the classic problem where a model memorizes its training data instead of learning general concepts. In a GAN context, overfitting might mean the generator produces images that resemble the training set too closely (or worse, literally copies them with minor noise). If the Simpson GAN was overfitting, it might have memorized one image of Lisa from the training set and all its outputs are basically that image with small random changes (like a slightly longer nose or wonky eyes due to noise). The result? Strange outputs that are clearly not truly new drawings of Lisa, but corrupted versions of something it memorized. That right-hand Lisa has the vibe of a bad photocopy of the original – which is essentially what an overfit model might produce.
  • Dataset bias: Experienced folks will also suspect dataset issues. Maybe all the training images of Lisa Simpson in the research paper were high-quality, front-facing shots with perfect coloring. But when you try it, your input or your extended data might include Lisa in different lighting or angles, and the model wasn’t prepared for that. Or perhaps the model was trained mostly on examples of Lisa with eyes half-closed (just as a quirk of the data collected). Then when it tries to draw fully open eyes, it places them incorrectly or makes them asymmetrical – hence the crossed-eye look. Bias in the training data means the generator’s learned distribution is skewed. In production or new data, that skew shows up as obvious errors. Seasoned ML engineers have a saying: “garbage in, garbage out,” but here it’s more subtle – even slightly biased in can lead to goofy out.
  • Research PR vs Engineering Reality: There’s a subtle jab here at how research is often communicated. The term “research_paper_pr” suggests that academic publications can sometimes be a bit like press releases or marketing. To get a paper accepted at a top conference, authors are incentivized to present their model in the best possible light. This can mean focusing on the handful of stunning example outputs and sweeping the duds under the rug. It’s not outright lying – they might report average metrics honestly – but the qualitative examples (like figures in the paper or the promo images on Twitter when they announce the work) are usually the crème de la crème. It’s the “polished promo shot” phenomenon. Insiders know that for every beautiful sample image in a paper, there might be dozens the authors chose not to show. This meme blows that up into a joke: the left panel is that promotional image, the right panel is “what they didn’t show you.”
  • Reproducibility issues: There’s an entire industry conversation about the reproducibility crisis in AI research. Half the time, when engineers try to reproduce academic results, they hit hurdles: maybe the code isn’t available or it’s poorly documented, maybe the random seed wasn’t fixed so results vary, maybe crucial training tricks weren’t fully detailed in the paper’s appendix. The frustration is real – you implement the described method and your DeepLearningModels just won’t behave as advertised. The meme channels this frustration: the confident left Lisa is the promise in the paper (“our GAN achieves fabulous results on all samples”), the janky right Lisa is the result of your faithful reimplementation (“our attempt produces... this”). It’s painfully funny because it happens a lot.

To fix these issues or make GANs work as well as advertised is non-trivial. Senior engineers know that bridging the gap between a model_demo_vs_production isn’t just “copy the code and go.” It might involve:

  • Retraining on more diverse data to handle edge cases (so the model doesn’t freak out on slightly different inputs).
  • Tuning hyperparameters or using newer GAN techniques (like adding regularization or using newer architectures that reduce artifacts).
  • Sometimes accepting that the paper’s results are a lucky break or require far more computing resources. (Your single GPU might not replicate a model that the authors trained for 2 weeks on a TPU pod.)
  • Dealing with all the systemic issues of deploying ML: monitoring for when the model spits out garbage, setting up fallback systems, etc.

In many organizations, there’s a bit of a culture clash between the research team (who prototype the fancy model and show a few great images) and the engineering team (who have to make it work reliably on real data). This meme would get a knowing laugh in a deployment meeting: “Sure, the research demo looked like left Lisa. Then we integrated the model into our pipeline and got a bunch of right Lisas. Classic.” It encapsulates why seasoned folks approach new AI Generated Content claims with cautious optimism — and maybe a side of skepticism. We’ve all been burned by a model that was supposed to be groundbreaking but ended up broken on arrival.

To summarize the senior perspective, imagine this scenario:

Research Paper: “Our GAN can generate Simpsons characters so well, you’d think they were drawn by Matt Groening himself!” (shows elegant Lisa image)
Engineer in the wild: “I tried it... and my outputs look like Lisa’s been through a funhouse mirror.”

The meme’s humor lives in that discrepancy. AI_ML veterans see Lisa’s derpy face and immediately recall battling similar artifacts at 3 AM, eyes twitching like that Lisa, trying to tune a model that stubbornly outputs nonsense. It’s both a roast and an affectionate nod to how far from polished reality our state-of-the-art can be.

To drive home the contrast, here’s a cheeky comparison:

Polished Paper Demo Actual Production Use
Hand-picked best output for the paper/slide deck 🖼️ All outputs, even the mutants, exposed to users 😬
Trained on a clean, curated dataset (lab conditions) 🧪 Runs on noisy, unpredictable real-world data 🌪️
Weeks of finetuning on massive GPUs for just-right results 🔬 Limited training time on a single GPU – “good enough” settings ⏱️
Presented as “basically solved!” in PR talk 🎤 Needs constant babysitting and still surprises you 🎢
Impresses academics at conference 📚 Makes your product manager raise an eyebrow 🤨

Everyone who’s been through it finds a bittersweet laugh here. It’s AI limitations meets human expectations: we want the left image results, but we often get the right image reality. And as much as we gripe, this gap keeps us employed – after all, someone has to wrangle those derpy outputs and try to fix them! The meme serves as a comedic reminder: In AI, as in life, the demos are always smoother than the real thing.

Level 4: Minimax Mirage

At the theoretical extreme, this meme underscores how the elegant math of Generative Adversarial Networks (GANs) can deceive us with a mirage of perfection. GANs are defined by a two-player minimax game: one network (the generator) tries to produce fake images, while the other (the discriminator) tries to detect which images are real vs generated. In an ideal world (think academic theory-land), there's a Nash equilibrium where the generator’s fake images are indistinguishable from real data. The original GAN formulation by Goodfellow et al. (2014) even proved that if the model has infinite capacity and training reaches equilibrium, the generator will perfectly mimic the data distribution. Mathematically, the objective is often written as a minimax value function:

\min_{G} \max_{D} V(D, G) = \mathbb{E}_{x \sim p_{\text{data}}}[\log D(x)] + \mathbb{E}_{z \sim p_{z}}[\log(1 - D(G(z)))]~,

where $D(x)$ is the discriminator’s probability that sample $x$ is real. At the theoretical optimum, the generator’s distribution $p_g$ equals the real data distribution $p_{\text{data}}$, and the discriminator outputs 0.5 for every image (meaning it can’t tell real from fake). In academic_papers, this equilibrium is the polished ideal – the left panel Lisa Simpson in a flawless black dress, representing a generator that nailed the data’s style.

So why the goofy Lisa on the right? Because in practice, achieving that equilibrium is like chasing a mirage in the desert of high-dimensional probability spaces. Training a GAN involves navigating a non-convex optimization landscape with two agents dynamically updating; it’s notoriously unstable. The generator and discriminator are in a constant tug-of-war, and often they don’t “tango” gracefully – more like they stumble. One common failure is mode collapse: instead of learning the entire data distribution, the generator finds a narrow solution (one mode) that fools the discriminator enough, and then stubbornly reproduces that same type of output over and over. It’s as if the generator says, “I’ve got one decent way to draw Lisa Simpson’s face, I’ll just stick to that,” leading to many outputs that look eerily alike or distorted in similar ways. Another culprit is the choice of loss function: the classic GAN uses the Jensen-Shannon divergence implicitly, which can saturate (provide vanishing gradients) if the fake distribution and real distribution don’t overlap initially. In theory, if everything were ideal, the discriminator would perfectly guide the generator. In reality, training data is finite and the networks are imperfect, so the generator can end up “cheating” in weird ways – producing images that exploit weaknesses in the discriminator’s learned criteria rather than truly matching the real data. Those exploits show up as image_generation_artifacts: strange textures, distorted features, crossed eyes and exaggerated noses. The discriminator might be partially fooled by these artifacts (maybe it only checks for general color and shape and misses the wonky eye), so the generator has no incentive to fix them. The result? The mathematically optimal polished Lisa (left) remains a theoretical goal, while your actual output (right) is off-mark – a noisy approximation with telltale glitches.

In cutting-edge research, authors often introduce techniques to combat these issues (like WGAN’s Wasserstein distance to address JS divergence problems, or gradient penalty to stabilize training). But even with those, the gap between lab results and real-world deployment remains. Unless all training conditions, data distributions, and hyperparameters are meticulously managed, the generator can wander off into producing spooky images that only vaguely resemble the target. We end up with papers touting “near-photorealistic generations” while reality gives us “nearly photorealistic... if you squint and ignore the extra ear.” The deep irony highlighted by the meme is rooted in this mismatch between what the DeepLearningModels theory promises and what the messy physics of optimization actually delivers. Even with immense compute and carefully curated datasets, there’s an underlying entropy in how these models learn – a chaotic element that resists the neat perfection of those polished promo shots. In short, the left-panel Lisa represents the Plato’s ideal of a GAN output (the generator capturing the true essence of Lisa), whereas the right-panel Lisa is what happens when real-world limitations (finite data, finite compute, and an adversarial training dance that went a bit off-beat) slap us with a dose of AI reality. The meme is funny, in a darkly satisfying way, because it visualizes how all the beautiful theory can still lead to a derpy result when the rubber meets the road. It’s a Minimax Mirage – the math promises an oasis of perfect images, but you often get mirage-like hallucinations instead.

Description

This is a two-panel meme using the 'Lisa Simpson Presentation' format to satirize the gap between academic research and practical application in machine learning. The left panel, captioned 'Showcased GAN Output in Papers,' features a well-known image of Lisa Simpson looking smug, polished, and confident in a black dress and pearls. The right panel, captioned 'Actual GAN Output,' shows a contrasting image of Lisa looking disheveled, wide-eyed, and slightly crazed, with an awkward grimace. A small watermark for 't.me/dev_meme' is visible in the bottom right. The meme hilariously captures the frustration of ML engineers who try to replicate the impressive results of Generative Adversarial Networks (GANs) from research papers, only to be met with chaotic, nonsensical, or downright terrifying outputs. It's a classic 'expectation vs. reality' joke that highlights the cherry-picking of results, the difficulty of training, and the general instability that characterizes many cutting-edge AI models

Comments

12
Anonymous ★ Top Pick The GAN in the paper is a super-resolution model that turns a pixel into a photograph. The GAN on my machine is a super-resolution model that turns a photograph into a recurring nightmare
  1. Anonymous ★ Top Pick

    The GAN in the paper is a super-resolution model that turns a pixel into a photograph. The GAN on my machine is a super-resolution model that turns a photograph into a recurring nightmare

  2. Anonymous

    GAN paper: “2.1 FID on a single A100.” Production: cross-eyed Lisa from a lone T4 we stole from the logging cluster - finance called it “adequate GPU coverage.”

  3. Anonymous

    After 500 epochs and $10k in GPU costs, you too can achieve the coveted 'mode collapse chic' - where every generated face looks like it's having an existential crisis about whether it's real or fake, just like the discriminator that trained it

  4. Anonymous

    This perfectly captures the ML researcher's dilemma: spend 3 months training a GAN, get 10,000 nightmare fuel outputs and exactly 5 photorealistic images - naturally, those 5 make it into the paper while the rest haunt your dreams and your model checkpoints. It's not cherry-picking if you call it 'representative samples,' right?

  5. Anonymous

    Every GAN is reproducible - as long as you reuse their exact checkpoint, seed=42, and the undocumented manual cherry-pick layer between the generator and Figure 3

  6. Anonymous

    Papers: FID 1.2, NeurIPS-ready. Reality: FID 'fire the data scientist'

  7. Anonymous

    GAN papers: truncation trick + aggressive seed shopping = Lisa in haute couture; GAN in prod: mode collapse + distribution drift = Lisa drawn by RNG

  8. @ozalexo 5y

    So... What's the difference? :-)

  9. @InnerTempest 5y

    What is GAN?

    1. @p4vook 5y

      Gay Acceleration Network

    2. @RiedleroD 5y

      gravity-related ambient neuroanalysis

    3. @SrZorro 5y

      Generative adversarial network https://en.m.wikipedia.org/wiki/Generative_adversarial_network

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