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SB73<br />

■ SB73<br />

73- Suite 324- Hyatt<br />

Market Microstructure and High-Frequency Trading<br />

Cluster: Quantitative Finance<br />

Invited Session<br />

Chair: Gerry Tsoukalas, University of Pennsylvania,<br />

The Wharton School, Philadelphia, PA, United States of America,<br />

gtsouk@wharton.upenn.edu<br />

1 - General State Space Models in Electronic Market Making<br />

Vibhav Bukkapatanam, PhD Candidate, Stanford University,<br />

141O Huang Engineering Center, Stanford, CA, 94305,<br />

United States of America, vibhav@stanford.edu<br />

In recent years, the dramatic growth in electronic trading has revolutionized<br />

financial markets and led to the proliferation of high frequency market makers. In<br />

this work, we analyze how general state space models can be used in several key<br />

components of a maket making system, including spot variance and correlation<br />

estimation, regime switching modeling of high frequency data and optimal<br />

inventory control based bid-ask spreads estimation.<br />

2 - Predicting the Impact of a Proposed Securities<br />

Exchange Regulation<br />

Waraporn Tongprasit, Stanford University, Stanford, CA, United<br />

States of America, Waraporn@stanford.edu, Benjamin Van Roy<br />

We propose an approach to counterfactual analysis of securities exchanges that<br />

can be applied to predict the impact of proposed regulatory changes. We conduct<br />

an empirical case study in which we predict the impact of a historical tick size<br />

change on exchange efficiency and compare predictions to what can be inferred<br />

from subsequent data.<br />

3 - Disentangling Price Impact from Alpha<br />

Mehmet Saglam, Columbia University, New York, NY,<br />

United States of America, MSaglam13@gsb.columbia.edu,<br />

Ciamac Moallemi, Michael Sotiropoulos<br />

Motivated by the performance measurement literature in active portfolio<br />

management, we are interested in attributing the price changes observed during<br />

an execution of a large trade between the client’s short term predictive ability,<br />

alpha view, and the broker’s price impact. Using execution data with a large<br />

universe of clients, we show that incorporating client’s alpha view drastically<br />

increases the explanatory power of existing models and enables to accurately<br />

estimate the price impact.<br />

4 - Optimal Trade Execution using Limit Order Book Information<br />

Rolf Waeber, Cornell University, 206 Rhodes Hall, Ithaca, NY,<br />

14853, United States of America, rw339@cornell.edu,<br />

Sasha Stoikov<br />

We consider an asset liquidation problem at the market microstructure level,<br />

given observations of the limit order book. The optimization is formulated in<br />

terms of a sequence of stopping times, at which we submit market sell orders. We<br />

describe the shape of the trade and no trade regions for different price and latency<br />

assumptions. In the empirical section, we show that our policy signicantly<br />

outperforms a benchmark TWAP algorithm on US treasury bonds.<br />

<strong>Sunday</strong>, 1:30pm - 3:00pm<br />

■ SC01<br />

01- West 101- CC<br />

Optimization in Data Mining<br />

Sponsor: Optimization/Global Optimization<br />

Sponsored Session<br />

Chair: Onur Seref, Assistant Professor, Virginia Tech, 1007 Pamplin<br />

Hall, Blacksburg, VA, 24061, United States of America, seref@vt.edu<br />

1 - How to Reverse-Engineer Quality Rankings<br />

Cynthia Rudin, Assistant Professor, Massachusetts Institute of<br />

Technology, 77 Massachusetts Avenue, Cambridge, MA,<br />

United States of America, rudin@mit.edu, Michael Cavaretta,<br />

Gloria Chou, Robert Thomas, Allison Chang<br />

A good or bad product quality rating can make or break an organization.<br />

However, the notion of “quality” is often defined by an independent rating<br />

company that does not make the formula for ranking products public. We provide<br />

a machine learning approach for “reverse-engineering” a rating company’s<br />

proprietary model as closely as possible.<br />

INFORMS Phoenix – 2012<br />

104<br />

2 - A Probabilistic Model for Assessing the Mortality Risk in<br />

Post-operative Patients<br />

Dmytro Korenkevych, 372 Maguire Village, Apt. 1, Gainesville, FL,<br />

32603, United States of America, dmitriy@ufl.edu, Petar<br />

Momcilovic, Panos Pardalos<br />

We used a probabilistic model based on Bayesian learning and optimization<br />

techniques to estimate the mortality risk in post-operative patients. The model<br />

incorporates discrete and continuous risk factors and provides a probabilistic score<br />

associated with the risk. The feature selection procedure was applied in order to<br />

discard irrelevant risk factors and 70/30 cross-validation analysis was performed<br />

to estimate the accuracy of the model.<br />

3 - Information-Theoretic Learning for Stimulus-specific<br />

Clustering with fMRI<br />

Chun-An (Joe) Chou, University of Washington, 3900 Stevens<br />

Way, Seattle, WA, United States of America, joechou@uw.edu,<br />

Kittipat “Bot” Kampa, Art Chaovalitwongse<br />

Multi-Voxel Pattern Analysis (MVPA) is a popular approach for cognitive<br />

recognition with functional MRI (fMRI), as it is consistent with a neural system<br />

that mental operations/representations are instantiated in a neural population<br />

code spanning multiple voxels. In this work, we employ an unsupervised<br />

clustering with an information-theoretic measure to identify the spatial patterns<br />

of voxels in response to stimuli. The results illustrate that there are specific<br />

clusters for different stimuli.<br />

4 - Optimization Models for Predicting the Antigenic Variants of<br />

Influenza A/H3N2 Virus<br />

Serdar Karademir, University of Pittsburgh, 1048 Benedum Hall,<br />

Pittsburgh, United States of America, sek73@pitt.edu<br />

We use the pairwise amino acid sequence comparison of influenza strains and the<br />

antigenic distance between each pair as input for a classification model to identify<br />

immunodominant positions that cause antigenic variety. The performance of the<br />

model is evaluated through cross validation where cross validation is modeled as<br />

an optimization program that minimizes the misclassification error. Comparison<br />

to results of existing classification methods in literature is also provided.<br />

■ SC02<br />

02- West 102 A- CC<br />

DA Entrepreneurs Speak: Challenges and<br />

Opportunities in Building Decision Analysis<br />

Based Businesses<br />

Sponsor: Decision Analysis<br />

Sponsored Session<br />

Chair: Chris Dalton, CEO, Syncopation Software, 6 State Street,<br />

Suite 402, Bangor, ME, 04401, United States of America,<br />

cdalton@syncopation.com<br />

1 - Tales from the Decision Analysis Industrial Complex<br />

Chris Dalton, CEO, Syncopation Software, 6 State Street,<br />

Suite 402, Bangor, ME, 04401, United States of America,<br />

cdalton@syncopation.com<br />

This talk will define what it means to be a Decision Analysis based business, and<br />

give examples of successful and unsuccessful DA business models. At the end of<br />

the session, we will have a panel discussion with the speakers and other members<br />

of the DA business community.<br />

2 - Building Decision Analysis Based Businesses<br />

Carl Spetzler, CEO, Strategic Decisions Group, 745 Emerson Street,<br />

Palo Alto, CA, 94301, United States of America, cspetzler@sdg.com<br />

As an early member of the original Decision Analysis Group at SRI Internaional<br />

and then one of the founders of SDG, I have participated in and observed about a<br />

dozen of start-up companies based on the power of DA. In this session, I will<br />

share my observations from the successes and failures of these entrepreneurial<br />

efforts.<br />

3 - Business Analytics, Information Technology, and Decision<br />

Analysis<br />

Don Kleinmuntz, Exec VP & Cofounder, Strata Decision<br />

Technology, 200 E Randolph St 49th Floor, Chicago, IL, 60601,<br />

United States of America, dnk@strata-decision.com<br />

Business Analytics is a huge wave that has overtaken a number of industries and<br />

is guiding the development of IT infrastructure in many others. There is a genuine<br />

opportunity to embed decision analysis tools and processes in that infrastructure<br />

and create tremendous impact.

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