Gradient boosted trees were selected as the most appropriate algorithm for this modeling task of those assessed based on their overall higher cross-validation mean and comparable standard deviation for F1 scores across models. BThe number of TF-IDF terms varied across the cross-validation folds based on the comments and submissions vocabulary present in the training portion of each fold. The value presented here is the number of TF-IDF features when calculated on text from the full training set. Coders manually reviewed and labeled self-reported age in posts until they reached a minimum of 625 cases within each of the target age categories. We targeted 625 labeled cases so that we could have at least 500 labeled cases per age category to train and cross validate the algorithm (80%) and 125 labeled cases per age category for a final test set (20%). In Table 1, we report the final number of posts coded for age, as well as the number of posts excluded because they were not relevant or age could not be determined. We aimed to develop a machine learning algorithm that predicts the age segment of Reddit users, as either adolescents or adults, based on publicly available data.
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The average life of a post on the Reddit’s front page is 4 hours and 15 minutes. Some posts disappear after 15 minutes, some live for as long as 18 hours. Interestingly, textual self-posts with a positive headline live on the front page significantly longer than the ones with a neural or even negative headline. It pays off to have a positive headline, even if your post is negative in content.

Reddit advertising revenue

Climate TRACE’s mission may seem like a tall order, but it’s one that a number of big names in tech believe in. John Doerr has endorsed it, and Gore is a founding member and donor along with partners at his firm, Generation Investment Management. — Google’s charitable arm — and Eric and Wendy Schmidt’s philanthropic venture Schmidt Futures are also helping to get Climate TRACE’s efforts off the ground. Michelle Ma (@himichellema) is a reporter at Protocol covering climate. Previously, she was a news editor of live journalism and special coverage for The Wall Street Journal. Prior to that, she worked as a staff writer at Wirecutter. By October, both sides — and all the food companies, tech companies, investors and lawyers that are watching and salivating with anticipation — will have their first signals about the future of the patent in question. Impossible Foods has until near the end of July of this year to respond to Motif’s IPR filing , and then the patent office will have three months to decide whether to more seriously review it.

We ran a weighted version of the final reduced gradient boosted tree model to understand if a weighting correction would impact performance. The results confirm that performance is nearly the same with or without weighting for the imbalance. Second, users who self-report age may be systematically different than those who do not report age, which may limit generalizability to all Reddit users. Third, due to the evolving nature of language and platform use on social media, studies of this nature need to be continually updated. Previous research has found that language models used for predicting age and gender on social media tend to degrade over time if not retrained, with larger differences for younger social media users than older social media users .

Reddit users by country

Nestor Gilbert is a senior B2B and SaaS analyst and a core contributor at FinancesOnline for over 5 years. With his experience in software development and extensive knowledge of SaaS management, he writes mostly about emerging B2B technologies and their impact on the current business landscape. However, he also provides in-depth reviews on a wide range of software solutions to help businesses find suitable options for them. Through his work, he aims to help companies develop a more tech-forward approach to their operations and overcome their SaaS-related challenges. Posts with questions get the most comments, whereas posts without questions get the most upvotes . Consequently, Reddit has gained the confidence of digital advertisers, and its popularity is on an upward trajectory. Timing on Reddit is crucial but getting it just right is tricky.

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