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Why airplane toilets are tiny engineering marvels

Popular Science

More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. There's more to airplane toilets than meets the eye. Breakthroughs, discoveries, and DIY tips sent six days a week. But that incredibly loud sucking sound is actually something of an engineering marvel. In this episode of Ask Us Anything by, we get into all the smelly details of how airplane toilets actually work. Ask Us Anything answers your most outlandish, mind-burning questions--from the everyday things you've always wondered to the bizarre things you never thought to ask. So, yes, there's a reason we can't remember being babies and no, not all cats hate water .


Appendix AVariational Paragraph Embedder A.1 Selection of substitution rate p

Neural Information Processing Systems

Figure 4: Impact of the proportion of injected noise for learning Paragraph Embeddings on XSum dataset. PPLint and the PPL of the generation obtained from training PLANNER on the corresponding z at different noise level. We observed when the value of p is within (0, 0.7), there Performing a grid search on each task using diffusion models is an expensive process. However, it has been observed that an increase in the value of p leads to a deviation between the two. This could be attributed to a higher conversion error that occurs when p is excessively large. A.2 Selection of number of latent code k The parameter k determines the number of latent codes used to represent a paragraph and therefore controls the compression level. Latent codes with smaller values of k are easier to model using the diffusion model, but may struggle to accurately preserve all the information in the original text. Additionally, smaller values of k offer computational efficiency as the sequence length for the diffusion model is k. To determine the best set of latent codes, we conducted experiments using three different methods: 1) selecting the first k hidden vectors, 2) selecting the last k hidden vectors, and 3) selecting interleaving hidden vectors, one for every L k hidden vectors. The results of the ablation study are presented in Table 5. Based on our findings, we observed no significant difference among the different choices, so we opted for option 1). Furthermore, we discovered that increasing the value of k does not lead to a dramatic improvement in performance. To balance between efficiency and performance, in most of our study we only use k =16 Setup BLEU_clean BLEU_robust First k (k=16) 79.59 43.17 A.3 Reconstruction, denoising and interpolation examples In Table 6, we present examples that demonstrate the adeptness of the trained Variational Paragraph Embedder in providing clean and denoised reconstructions. Additionally, we showcase interpolation results (Table 7, 8) derived from two random sentences in the hotel review dataset. The interpolated paragraph is usually coherent and incorporates inputs from both sentences, characterizing the distributional smoothness of the latent space. Reconstructed text complaints: after two nights stay, i asked the maid to clean our room (empty the wastebasket & make the bed). Denoising reconstruction (hotel review), noise level 0.3 Original text * * * check out the bathroom picture * * * i was in nyc by myself to watch some friends participate in the us olympic marathon trials. Corrupted text * * [unused697] check exams the bathroom picture * * slams i was in nyc mead myself yankee 2016 some scotch ruin in the outfielder olympicnca trials.


49d1cf22327c51331cbd52bcb76a09a6-Supplemental-Conference.pdf

Neural Information Processing Systems

ConceptNet488 comprises commonly observed entities and their connections, where edge weights signify the re-489 liability and frequency of these relationships. To prevent the redundancy of common information and to maintain the validity of the enriched491 relations, we categorized the relationships based on their weights. Relationships with weights less492 than 1 were deemed "weak" and those with a weight of 1 were labeled "average". We refrained from493 using these categories for relation enhancement. Instead, only relationships with weights greater than494 1, indicative of high reliability, were employed for augmenting the relations.495


Dialog-based Language Learning

Neural Information Processing Systems

A long-term goal of machine learning research is to build an intelligent dialog agent. Most research in natural language understanding has focused on learning from fixed training sets of labeled data, with supervision either at the word level (tagging, parsing tasks) or sentence level (question answering, machine translation). This kind of supervision is not realistic of how humans learn, where language is both learned by, and used for, communication. In this work, we study dialog-based language learning, where supervision is given naturally and implicitly in the response of the dialog partner during the conversation. We study this setup in two domains: the bAbI dataset of [23] and large-scale question answering from [3]. We evaluate a set of baseline learning strategies on these tasks, and show that a novel model incorporating predictive lookahead is a promising approach for learning from a teacher's response. In particular, a surprising result is that it can learn to answer questions correctly without any reward-based supervision at all.


Appendix A V ariational Paragraph Embedder A.1 Selection of substitution rate p

Neural Information Processing Systems

Figure 4: Impact of the proportion of injected noise for learning Paragraph Em-beddings on XSum dataset. (Figure 4). The results of the ablation study are presented in Table 5. Embedder in providing clean and denoised reconstructions. In general, it has been observed that generations progress in a coarse-to-fine manner. The early time step, which is close to 1, tends to be less fluent and generic. This was the nicest stay we have ever had. Turtle Bay was a great resort. This was the nicest stay we have ever had.




Bidets Are Confusing Visitors at the 2026 Winter Olympics

WIRED

Bidets are extremely common in northern Italy, where the Milano Cortina Games are being played. One of the first bidets in Italy was installed at the Palace of Caserta for Queen Maria Carolina in the late 1700s. Bidets are now, once again, having a moment. As international athletes and journalists descend on northern Italy for the 2026 Winter Olympics, certain participants have wondered about the additional piece of equipment in their bathrooms. Europeans, quite familiar with the oval basins, have found themselves similarly perplexed by their confusion.



Vaping Is 'Everywhere' in Schools--Sparking a Bathroom Surveillance Boom

WIRED

Schools in the US are installing vape-detection tech in bathrooms to thwart student nicotine and cannabis use. A new investigation reveals the impact of using spying to solve a problem. It was in physical education class when Laila Gutierrez swapped out self-harm for a new vice. The freshman from Phoenix had long struggled with depression and would cut her arms to feel something. The first drag from a friend's vape several years ago offered the shy teenager a new way to escape. She quit cutting but got hooked on nicotine. Her sadness got harder to carry after her uncle died, and she felt she couldn't turn to her grieving parents for comfort. Bumming fruity vapes at school became part of her routine. "I would ask my friends who had them, 'I'm going through a lot, can I use it?'" Gutierrez, now 18, told The 74. "Or'I failed my test and I feel like smoking would be better than cutting my wrists.'"