Organizations must often solve problems with insufficient knowledge. A solver can specialize in a narrow area of expertise or become a generalist to gain a broader understanding of the problem. Despite this well-recognized knowledge structure difference between generalists and specialists, little is known about the impact of in-depth knowledge and wide-ranging knowledge on problem-solving performance. This is due to a lack of understanding of the distinction between knowledge depth and breadth, assuming that deepening knowledge implies accumulating outcomes within one domain, as opposed to broadening knowledge implying more search areas. In this paper, we model generalists and specialists using knowledge depth and breadth, which alters their search behaviors on a multi-level $NK$ fitness landscape. We propose that generalists and specialists structurally have different knowledge structures, which affords them to have different problem-solving capabilities and consequently will contribute solutions differently when collaborating. Specialists can perceive finer granularity and provide local refinement, while generalists can perceive more interdependencies and provide broad repositioning. Having these different perception inclinations, specialists and generalists require different organizing strategies. Specialists may excel at independent search, but generalists benefit more from collective search, especially when communicating with specialists. Problem complexity and knowledge overlap could even complicate these findings. These insights advance our understanding of how we might best coordinate generalists and specialists within organizations.
information theoretic subspace clusteringali hassan
Information Theoretic Subspace Clustering
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IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS,
VOL. 27, NO. 12, DECEMBER 2016
An approach for improved students’ performance prediction using homogeneous ...IJECEIAES
Web-based learning technologies of educational institutions store a massive amount of interaction data which can be helpful to predict students’ performance through the aid of machine learning algorithms. With this, various researchers focused on studying ensemble learning methods as it is known to improve the predictive accuracy of traditional classification algorithms. This study proposed an approach for enhancing the performance prediction of different single classification algorithms by using them as base classifiers of homogeneous ensembles (bagging and boosting) and heterogeneous ensembles (voting and stacking). The model utilized various single classifiers such as multilayer perceptron or neural networks (NN), random forest (RF), naïve Bayes (NB), J48, JRip, OneR, logistic regression (LR), k-nearest neighbor (KNN), and support vector machine (SVM) to determine the base classifiers of the ensembles. In addition, the study made use of the University of California Irvine (UCI) open-access student dataset to predict students’ performance. The comparative analysis of the model’s accuracy showed that the best-performing single classifier’s accuracy increased further from 93.10% to 93.68% when used as a base classifier of a voting ensemble method. Moreover, results in this study showed that voting heterogeneous ensemble performed slightly better than bagging and boosting homogeneous ensemble methods.
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information theoretic subspace clusteringali hassan
Information Theoretic Subspace Clustering
Ran He, Liang Wang, Zhenan Sun, Yingya Zhang, and Bo Li
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS,
VOL. 27, NO. 12, DECEMBER 2016
An approach for improved students’ performance prediction using homogeneous ...IJECEIAES
Web-based learning technologies of educational institutions store a massive amount of interaction data which can be helpful to predict students’ performance through the aid of machine learning algorithms. With this, various researchers focused on studying ensemble learning methods as it is known to improve the predictive accuracy of traditional classification algorithms. This study proposed an approach for enhancing the performance prediction of different single classification algorithms by using them as base classifiers of homogeneous ensembles (bagging and boosting) and heterogeneous ensembles (voting and stacking). The model utilized various single classifiers such as multilayer perceptron or neural networks (NN), random forest (RF), naïve Bayes (NB), J48, JRip, OneR, logistic regression (LR), k-nearest neighbor (KNN), and support vector machine (SVM) to determine the base classifiers of the ensembles. In addition, the study made use of the University of California Irvine (UCI) open-access student dataset to predict students’ performance. The comparative analysis of the model’s accuracy showed that the best-performing single classifier’s accuracy increased further from 93.10% to 93.68% when used as a base classifier of a voting ensemble method. Moreover, results in this study showed that voting heterogeneous ensemble performed slightly better than bagging and boosting homogeneous ensemble methods.
Although initially designed for co-located teams, agile methodologies promise mitigation to the challenges present in distributed software development with their demand for frequent communication. We examine the application of agile practices in software engineering teams with low geographical distribution in Austria and Germany. To gather insights on challenges and benefits faced by distributed teams we conduct interviews with eleven representatives and analyse the interview transcripts using the inductive category formation method. As a result, we identify four major challenges, such as technical obstructions or the impediments different language abilities have on communication, and four benefits, regarding collaboration and information radiation, that agile methods yield in distributed teams. Based on our analysis of challenges and benefits, we deduct seven recommendations to improve collaboration, overcome distance and avoid pitfalls. Key recommendations for teams with low geographical distance include that teams should get together at certain points to build relationships and trust and share information face-toface.
Agile Distributed Software Development in Nine Central European Teams: Challe...ijcsit
Although initially designed for co-located teams, agile methodologies promise mitigation to the challenges present in distributed software development with their demand for frequent communication. We examine the application of agile practices in software engineering teams with low geographical distribution in Austria and Germany. To gather insights on challenges and benefits faced by distributed teams we conduct interviews with eleven representatives and analyse the interview transcripts using the inductive category formation method. As a result, we identify four major challenges, such as technical obstructions or the impediments different language abilities have on communication, and four benefits, regarding collaboration and information radiation, that agile methods yield in distributed teams. Based on our analysis of challenges and benefits, we deduct seven recommendations to improve collaboration, overcome distance and avoid pitfalls. Key recommendations for teams with low geographical distance include that teams should get together at certain points to build relationships and trust and share information face-toface.
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1. Generalists and Specialists in Collaboration
An Agent-Based Simulation Model
Junyi Li
January 9, 2023
Department of Information Systems and Analytics
National University of Singapore
4. Context
1. Solving problems with insufficient knowledge is ubiquitous in organizations.
2. Preference between knowledge scope and knowledge depth.
• Generalist
• Specialist
2 / 21
5. Research Gap
Empirical evidence highlighting the superior performance of both specialists and
generalists suggests that each has its own advantages and limitations that make
it easier for them to cope with different circumstances [6, 8, 7, 3, 17].
1. Task Requirements [2]
2. Performance Measurement [7]
3. Complexity [16, 1]
However, little is known about why generalists and specialists perform differently,
namely the behavioral differences they exhibit.
3 / 21
10. Problem-Solving as Landscape Search
The rugged landscape metaphor of the NK fitness landscapes model [9] has been
a useful theoretical and analytical instrument to model complex problem-solving
processes.
Conceptualizing problem-solving as a system of actions, we assume that an
individual has to make decisions concerning N actions to generate one solution.
A performance landscape thus is a mapping of any possible set of solutions of
individual actions d =< d1, d2, . . . , dN > to performance values F(d).
However, prior computational models [10, 14, 15] implicitly assume that
collaborating solvers deal with problems at the same level of granularity.
7 / 21
11. Problem-Solving as Landscape Search
We extend the traditional binary NK fitness landscape model toward a
multi-state one.
8 / 21
12. Cognitive Representation in Problem-Solving
1. A simplified cognitive representation [13, 5, 4], although crude, is useful for
examining experiential search in complex environments.
2. Because of the lack of knowledge, solvers can only perceive and propose
solutions from a cognitively simplified landscape [5], to which penalties of
uncertainty are attached.
3. Average pooling algorithms [11, 5, 12] are used to model cognitive
ambiguity such that the average of all alternatives in the refined space is
used to calculate the payoff of a coarse solution.
9 / 21
17. Collaboration
For simplicity, we consider a two-member team. To collaborate, the agents need
to align their cognition. We adopt four collaboration patterns proposed by
Gavetti [4]—autonomy, coordination, cognitive control, and circulation of
cognition
13 / 21
18. Collaboration
1. Autonomy
• No Alignment
• Imitate the unknown domains from teammates’ solution
2. Coordination
• Partial Alignment
• Imitate elements based on self-evaluation
3. Cognitive Control
• Mutual Alignment
• Anyone can visit and revise the elements
4. Cognitive Circulation
• Directed Alignment
• One can circulate elements onto the other
14 / 21
20. Independent Search
A narrow but refined solution is better than a broad but coarse one when agents
with insufficient knowledge are dealing with the problem.
15 / 21
21. Sequential Search
1. For generalists: under low complexity, G benefits from collaboration with G.
Under high complexity, G benefits from collaboration with S.
2. For specialists: under conditions of low complexity, specialists benefit from
collaboration with G/S.
16 / 21
23. Collective Search: Coordination
1. Generalists can benefit from collaboration, especially when collaborating
with specialists. This is because generalists’ unknown domains may be
refined by the specialists and adopted by generalists.
2. In the case of specialists, such complementary knowledge cannot be observed
18 / 21
24. Collective Search: Cognitive Control
The mutually imposed, instead of self-selected alignment undermines not only
the collaboration efficiency but also what could have been achieved without
heavy-handed interventions. (premature convergence)
19 / 21
25. Collective Search: Circulation
1. Generalists benefit from recombining the existing element circulated by
specialists.
2. Specialists lose their advantage in refining solutions since the finest solutions
could be easily replaced by coarse ones.
20 / 21
29. Key Parameters
N = 12, K varies from 0 to 11, agent number n = 100, landscape repetition is
500. Generalists are modeled as Kb = 6, Kd = 1, while specialists are modeled as
Kb = 3, Kd = 2. N = 12 is preferred because two generalists each specializing in
6 domains would require 12 domains in total if the two generalists did not
overlap in their expertise, as one of the possible cases.
30. Binary Landscapes
1. An individual has to make decisions concerning N actions to generate one
solution. A performance landscape thus is a mapping of any possible set of
solutions of individual actions d =< d1, d2, . . . , dN > to performance values
F(d).
2. Each element di makes a fitness contribution ci to the overall fitness F(d).
3. the fitness contribution ci for ith design element can be represented as
ci = ci(di|K other dj’s). The overall fitness value F(d) is the average of all
fitness contributions, that is, F(d) = 1
N
PN
i=1 ci.
31. Multi-State Landscape
The fitness contribution of the coarse granularity is calculated by taking an
average of the finest alternatives. For example, a fitness contribution of state A
is calculated as the average of two alternatives 1
: state 0 and 1, that is,
ci(di = A) =
ci(di=0|K other dj’s)+ci(di=1|K other dj’s)
2
1Average pooling is well-adopted in the literature [11, 5, 12].
37. References i
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Do General Managerial Skills Spur Innovation?
Management Science, 65(2):459–476, February 2019.
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[6] Greta Hsu.
Jacks of All Trades and Masters of None: Audiences’ Reactions to
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[7] Elina H. Hwang, Param Vir Singh, and Linda Argote.
Jack of All, Master of Some: Information Network and Innovation
in Crowdsourcing Communities.
Information Systems Research, 30(2):389–410, June 2019.
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[8] R Kassen.
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Maintenance of Diversity.
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Oxford University Press, 1993.
[10] Thorbjørn Knudsen and Kannan Srikanth.
Coordinated Exploration: Organizing Joint Search by Multiple
Specialists to Overcome Mutual Confusion and Joint Myopia.
Administrative Science Quarterly, 59(3):409–441, 2014.
41. References v
[11] Daniel A. Levinthal.
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Management Science, 43(7):934–950, July 1997.
[12] Daniel A. Levinthal and Maciej Workiewicz.
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Systems and Organizational Adaptation.
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[13] James G. March.
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Organization Science, 2(1):71–87, February 1991.
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Organization Science, 33(2):810–830, March 2022.
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Specialists, Generalists, or Both? Founders’ Multidimensional
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