We attempt to solve the problem of classifying action in vines by adapting classifiers trained for source dataset to target dataset.The challenge is to utilise an existing dataset for action videos to significantly gather relevant vines without investing manual labour.Īnother set of challenge is to merge visual, textual and hash-tag information of a vine to perform the above stated segregation. These videos contain significant camera shakes, lighting variability, abrupt shots etc. These are recorded by the users under unconstrained environment. The distribution of video are targeting is. We show the effectiveness of this simple adaptation technique on a test set of vines and achieve notable improvements in performance. Additionally, we utilise a multi-modal representation that incorporates noisy semantic information available in form of hash-tags. Our method incrementally augments the labeled source with target samples and iteratively modifies the embedding function to bring the source and target distributions together. We utilise semantic word2vec space as a common subspace to embed video features from both, labeled source domain and unlabelled target domain. To this end, we use a data augmentation based simple domain adaptation strategy. In this paper, we focus on the problem of unsupervised action classification in wild vines using traditional labeled datasets. Short internet video clips like vines present a significantly wild distribution compared to traditional video datasets. If there is something stopping you from using underscores in host names, though, it's not DNS, and never was.From Traditional to Modern: Domain Adaptation for Action Classification in Short Social Video Clips If you are reasonably sure that there is nothing in your environment that would choke on a hostname that contained an underscore (and I think that, these days, that's a pretty good assumption), then I think you're safe to use them. By "software" I mean all of the pieces of software that deal with hostnames in one way or another, from the operating system through network monitoring agents and everything in between. It just depends on what the software in use supports as characters that may be part of hostnames it uses for systems to designate themselves and peers. I would say that there is no single set of rules that define what is a valid host name. But if the rules for HOSTS.TXT were old when RFC 1034 was written, they're ancient history now! RFC 1034 was written as a time when usernames commonly couldn't exceed 8 characters and everything was ASCII. RFC 1034 says about host names that "the old rules for HOSTS.TXT should be followed". The next question is, are underscores allowed in actual host names? DNS registrars and nameservice providers shouldn't disallow that! Even if underscores were categorically disallowed in host names, you might want to fill this domain with DNS names that represent something other than host names. So for sure GoDaddy is wrong to deny you "this_". It says "The following syntax will result in fewer problems". RFC 1034 goes on to make a conservation suggestion on syntax which specifies labels without underscores. If you put something else, follow the appropriate syntax. If you put mail domains, restrict yourself to the rules of RFC 822 If you put DKIM or ENUM records in the DNS (which are not hostnames), restrict yourself to the syntax of those protocols. That means: if you put hostnames in the DNS, restrict yourself to the rules for host names. Will select a name which satisfies both the rules of the domain systemĪnd any existing rules for the object, whether these rules are published However, when assigning a domain name for an object, the prudent user The idea is that the name of anyĮxisting object can be expressed as a domain name with minimal changes. The DNS specifications attempt to be as general as possible in the rulesįor constructing domain names. RFC 1034 has this to say about the syntax of labels: To be perfectly clear, underscores have always been allowed in DNS since the very beginning.
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