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CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Applied Algebra and Network Theory Seminar
X-WR-TIMEZONE:America/New_York
BEGIN:VTIMEZONE
TZID:America/New_York
X-LIC-LOCATION:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:19700308T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
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DTSTART:19701101T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20140827T143000
DTEND;TZID=America/New_York:20140827T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23155
SUMMARY:Applied Algebra and Network Theory Seminar - TBA
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: TBA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20140903T143000
DTEND;TZID=America/New_York:20140903T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23156
SUMMARY:Applied Algebra and Network Theory Seminar - Organizational Meeting
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: Org
anizational Meeting
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20140910T143000
DTEND;TZID=America/New_York:20140910T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23157
SUMMARY:Applied Algebra and Network Theory Seminar - The spread of exploita
tive behavior in social networks and associated longitudinal effects on gl
obal topology
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: The
spread of exploitative behavior in social networks and associated longitu
dinal effects on global topology\nSpeaker: Chris Griffin\, Penn State\nAbs
tract: We present a game-theoretic model for the spread of noncooperative
behavior in online social networks. We use a two-strategy prisoner's dilem
ma framework wherein each player's behavior is classified as normal (coope
rate) or abusive (defect) and pairwise interactions between linked players
yield a unique payoff to each according to an associated payoff matrix. P
layer strategies evolve by imitation\, as each player mimics successful be
havior observed in his immediate neighborhood. Network structure evolves i
n parallel and is a function of strategy\, as players may choose to establ
ish new ties or sever existing ones to increase their payoff. We prove con
vergence of individual behavior over time to a final strategy vector as we
ll as convergence of network structure to a final pairwise stable network
state. Joint work with Sarah Rajtmajer\, Derek Mikesell and Anna Squicciar
ini.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20140917T143000
DTEND;TZID=America/New_York:20140917T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23158
SUMMARY:Applied Algebra and Network Theory Seminar - The orbit space of loc
al conjugation
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: The
orbit space of local conjugation\nSpeaker: Jacob Turner\, Penn State\nAbs
tract: We investigate the action of a product of general linear groups act
ing on the endomorphisms of a vector space by conjugation. We compute the
invariant rings and for a special case give a minimal\, algebraically inde
pendent set of generators. We also describe the null cone and what paramet
erizes the closed orbits of this action.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20140924T143000
DTEND;TZID=America/New_York:20140924T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23159
SUMMARY:Applied Algebra and Network Theory Seminar - The algebra and geomet
ry of feedforward neural networks
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: The
algebra and geometry of feedforward neural networks\nSpeaker: Vladimir It
skov\, Penn State
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141001T143000
DTEND;TZID=America/New_York:20141001T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23160
SUMMARY:Applied Algebra and Network Theory Seminar - Permutohedral Arrangem
ents\, Simplicial Decompositions and a Geometrization of the Classical Wor
pitzky Identity
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: Per
mutohedral Arrangements\, Simplicial Decompositions and a Geometrization o
f the Classical Worpitzky Identity\nSpeaker: Nick Early\, Penn State\nAbst
ract: In forthcoming joint work with Adrian Ocneanu\, we prove a symmetric
group character formula conjectured several years ago by the latter as he
was studying certain polyhedra emerging from hyperplane arrangements in s
implices. We reveal the geometric content which lies behind the classical
Worpitzky identity\, which expands a cubical number $r^{n-1}$ in terms of
the Eulerian numbers. Our proof suggests a new geometric interpretation
of combinatorial results of Sagan-Shareshian-Wachs on Eulerian quasi-symme
tric functions.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141008T143000
DTEND;TZID=America/New_York:20141008T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23161
SUMMARY:Applied Algebra and Network Theory Seminar - No Seminar
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: No
Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141015T143000
DTEND;TZID=America/New_York:20141015T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23162
SUMMARY:Applied Algebra and Network Theory Seminar - No Seminar
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: No
Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141022T143000
DTEND;TZID=America/New_York:20141022T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23163
SUMMARY:Applied Algebra and Network Theory Seminar - Algebraic geometry of
tree tensor networks
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: Alg
ebraic geometry of tree tensor networks\nSpeaker: Sara Jamshidi\, Penn Sta
te\nAbstract: Tree tensor networks have been used to model the ground stat
es of Hamiltonians in condensed matter physics and quantum chemistry. Exac
tly which quantum states can be represented by a tree tensor network with
a given topology and given restrictions on the parameter tensors? When the
restrictions are algebraic\, the set of states is a projective algebraic
variety. We describe those varieties\, using techniques originally develop
ed for phylogenetics.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141029T143000
DTEND;TZID=America/New_York:20141029T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23164
SUMMARY:Applied Algebra and Network Theory Seminar - Algebraic geometry of
tree tensor networks 2
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: Alg
ebraic geometry of tree tensor networks 2\nSpeaker: Sara Jamshidi\, Penn S
tate
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141105T143000
DTEND;TZID=America/New_York:20141105T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23165
SUMMARY:Applied Algebra and Network Theory Seminar - Inference using noisy
degrees: Differentially Private beta-model and synthetic graphs
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: Inf
erence using noisy degrees: Differentially Private beta-model and syntheti
c graphs\nSpeaker: Sesa Slavkovic\, Penn State\nAbstract: The β-model of
random graphs is an exponential family model with the degree sequence as a
sufficient statistic. Motivated by data privacy problems with network dat
a\, we present a differentially private estimator of the parameters of β-
model. We show that the estimator is asymptotically consistent and achieve
s the same rate as the non private estimator. Our techniques involve relea
sing the degree sequence using Laplace mechanism and constructing a maximu
m likelihood estimate of the degree sequence\, which is equivalent to proj
ecting the noisy degree sequence on the set of all graphical degree sequen
ces. We present an efficient algorithm for the projection which also outpu
ts a synthetic graph. Our techniques can also be used to release degree di
stributions accurately and privately\, and to estimate noisy degrees arisi
ng from contexts other than the privacy. We evaluate the proposed estimato
r on real graphs and compare it with a current algorithm for releasing deg
ree distributions and find that it does significantly better.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141112T143000
DTEND;TZID=America/New_York:20141112T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23166
SUMMARY:Applied Algebra and Network Theory Seminar - No Seminar
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: No
Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141119T143000
DTEND;TZID=America/New_York:20141119T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23167
SUMMARY:Applied Algebra and Network Theory Seminar - TBA
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: TBA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141203T143000
DTEND;TZID=America/New_York:20141203T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23169
SUMMARY:Applied Algebra and Network Theory Seminar - A recipe for post-clas
sical probabilistic theories
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: A r
ecipe for post-classical probabilistic theories\nSpeaker: Alex Wilce\, Sus
quehanna University\nAbstract: I describe a simple recipe for building (ge
nerally\, non-classical) probabilistic models having strong symmetry prope
rties from group-theoretic data. Where it can be made functorial\, this co
nstruction becomes a recipe for symmetric monoidal categories of such mode
ls. A version of quantum mechanics arises as a special case.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141210T143000
DTEND;TZID=America/New_York:20141210T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23170
SUMMARY:Applied Algebra and Network Theory Seminar - TBA
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: TBA
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20141217T143000
DTEND;TZID=America/New_York:20141217T152000
LOCATION:MB106
URL:http://www.math.psu.edu/seminars/meeting.php?id=23171
SUMMARY:Applied Algebra and Network Theory Seminar - TBA
DESCRIPTION:Seminar: Applied Algebra and Network Theory Seminar\nTitle: TBA
END:VEVENT
END:VCALENDAR