10,727 research outputs found
Extracting information from short messages
Much currently transmitted information takes the form of e-mails or SMS text messages and so extracting information from such short messages is increasingly important. The words in a message can be partitioned into the syntactic structure, terms from the domain of discourse and the data being transmitted. This paper describes a light-weight Information Extraction component which uses pattern matching to separate the three aspects: the structure is supplied as a template; domain terms are the metadata of a data source (or their synonyms), and data is extracted as those words matching placeholders in the templates
Quantum interactive proofs with short messages
This paper considers three variants of quantum interactive proof systems in
which short (meaning logarithmic-length) messages are exchanged between the
prover and verifier. The first variant is one in which the verifier sends a
short message to the prover, and the prover responds with an ordinary, or
polynomial-length, message; the second variant is one in which any number of
messages can be exchanged, but where the combined length of all the messages is
logarithmic; and the third variant is one in which the verifier sends
polynomially many random bits to the prover, who responds with a short quantum
message. We prove that in all of these cases the short messages can be
eliminated without changing the power of the model, so the first variant has
the expressive power of QMA and the second and third variants have the
expressive power of BQP. These facts are proved through the use of quantum
state tomography, along with the finite quantum de Finetti theorem for the
first variant.Comment: 15 pages, published versio
Correlated dynamics in egocentric communication networks
We investigate the communication sequences of millions of people through two
different channels and analyze the fine grained temporal structure of
correlated event trains induced by single individuals. By focusing on
correlations between the heterogeneous dynamics and the topology of egocentric
networks we find that the bursty trains usually evolve for pairs of individuals
rather than for the ego and his/her several neighbors thus burstiness is a
property of the links rather than of the nodes. We compare the directional
balance of calls and short messages within bursty trains to the average on the
actual link and show that for the trains of voice calls the imbalance is
significantly enhanced, while for short messages the balance within the trains
increases. These effects can be partly traced back to the technological
constrains (for short messages) and partly to the human behavioral features
(voice calls). We define a model that is able to reproduce the empirical
results and may help us to understand better the mechanisms driving technology
mediated human communication dynamics.Comment: 7 pages, 6 figure
Random Access Protocols with Collision Resolution in a Noncoherent Setting
Wireless systems are increasingly used for Machine-Type Communication (MTC),
where the users sporadically send very short messages. In such a setting, the
overhead imposed by channel estimation is substantial, thereby demanding
noncoherent communication. In this paper we consider a noncoherent setup in
which users randomly access the medium to send short messages to a common
receiver. We propose a transmission scheme based on Gabor frames, where each
user has a dedicated codebook of M possible codewords, while the codebook
simultaneously serves as an ID for the user. The scheme is used as a basis for
a simple protocol for collision resolution.Comment: 5 pages, 3 figures; EDIT: A version of this work has been submitted
for publication in the IEEE Wireless Communication Letters Journa
The sentiment analysis of tweets as a new tool to measure public perception of male erectile and ejaculatory dysfunctions
Twitter is a social network based on "tweets," short messages of up to 280 characters. Social media has been investigated in health care research to ascertain positive or negative feelings associated with several conditions but never in sexual medicin
Published Privacy Rights via Short Messages
Short messages in the form of advertisements are increasingly being accepted by the public through their cell phones. The public never specifically gave the phone number to the party sending the advertising message. This is considered to be even more annoying because the short message advertisement violates the principles of consumer protection. This study aims to determine and analyze the extent of privacy violations against the spread of spam information via short messages. This study uses the empirical normative method, namely research conducted with the approach of legal norms or substances, legal principles, legal postulates, and legal comparisons, using a conceptual approach. The results show that short messages in the form of offers that are not directly related to the services used by cellular subscribers must be a concern for customer convenience
Micropayments on Polish Internet Market
In this article author aims to give you a brief insight into problem of micropayments. Especially author takes into consideration situation on Polish Internet market. In the article classification of payments on Web is presented. In publication are also presented most popular and most profitable methods of micropayments - for example pre-paid system and Premium SMS (Short Messages System).W artykule tym autor przedstawia problem dokonywania mikropłatności w Internecie. Pod uwagę brana jest głównie sytuacja odzwierciedlająca stan panujący na polskim rynku internetowym. Autor przedstawia klasyfikację różnych rodzajów płatności, w zależności od wysokości kwot wykonywanych operacji. W publikacji zaprezentowano także najpopularniejsze metody mikropłatności - od systemów pre-paid po Premium SMS (Short Messages System).Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej nauk
Short Messages Spam Filtering Using Sentiment Analysis
In the same way that short instant messages are more and more used, spam and non-legitimate campaigns through this type of communication systems are growing up. Those campaigns, besides being an illegal online activity, are a direct threat to the privacy of the users. Previous short messages spam filtering techniques focus on automatic text classification and do not take message polarity into account. Focusing on phone SMS messages, this work demonstrates that it is possible to improve spam filtering in short message services using sentiment analysis techniques. Using a publicly available labelled (spam/legitimate) SMS dataset, we calculate the polarity of each message and aggregate the polarity score to the original dataset, creating new datasets. We compare the results of the best classifiers and filters over the different datasets (with and without polarity) in order to demonstrate the influence of the polarity. Experiments show that polarity score improves the SMS spam classification, on the one hand, reaching to a 98.91% of accuracy. And on the other hand, obtaining a result of 0 false positives with 98.67% of accuracy
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