Clifford Lam

976 total citations
21 papers, 568 citations indexed

About

Clifford Lam is a scholar working on Statistics and Probability, Economics and Econometrics and Safety, Risk, Reliability and Quality. According to data from OpenAlex, Clifford Lam has authored 21 papers receiving a total of 568 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Statistics and Probability, 5 papers in Economics and Econometrics and 4 papers in Safety, Risk, Reliability and Quality. Recurrent topics in Clifford Lam's work include Statistical Methods and Inference (6 papers), Reliability and Maintenance Optimization (4 papers) and Software Reliability and Analysis Research (4 papers). Clifford Lam is often cited by papers focused on Statistical Methods and Inference (6 papers), Reliability and Maintenance Optimization (4 papers) and Software Reliability and Analysis Research (4 papers). Clifford Lam collaborates with scholars based in United Kingdom, United States and Taiwan. Clifford Lam's co-authors include Ruey Huei Yeh, Jianqing Fan, Qiwei Yao, Pedro Souza, Jianfeng Yao, Zeng Li and Weilin Chen and has published in prestigious journals such as Technometrics, Biometrika and Journal of Econometrics.

In The Last Decade

Clifford Lam

19 papers receiving 544 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Clifford Lam United Kingdom	11	248	150	140	79	76	21	568
Rosario Romera Spain	10	125 0.5×	46 0.3×	62 0.4×	94 1.2×	22 0.3×	28	371
Tahani Coolen‐Maturi United Kingdom	13	268 1.1×	28 0.2×	279 2.0×	314 4.0×	103 1.4×	66	602
Joan del Castillo Spain	10	182 0.7×	55 0.4×	21 0.1×	57 0.7×	14 0.2×	32	399
Vlad Ștefan Barbu France	9	71 0.3×	32 0.2×	67 0.5×	66 0.8×	28 0.4×	32	353
Martin Newby United Kingdom	16	268 1.1×	42 0.3×	386 2.8×	278 3.5×	128 1.7×	47	768
Konstantin M. Zuev United States	12	81 0.3×	127 0.8×	95 0.7×	358 4.5×	7 0.1×	29	672
Bruce Hoadley United States	10	255 1.0×	40 0.3×	21 0.1×	141 1.8×	12 0.2×	15	572
Cheng–Der Fuh Taiwan	13	135 0.5×	48 0.3×	20 0.1×	106 1.3×	6 0.1×	57	426
Edward F. Mykytka United States	6	234 0.9×	40 0.3×	16 0.1×	107 1.4×	6 0.1×	11	451
Gheorghe Oprişan Romania	3	77 0.3×	18 0.1×	126 0.9×	85 1.1×	59 0.8×	3	327

Countries citing papers authored by Clifford Lam

Since Specialization

Citations

This map shows the geographic impact of Clifford Lam's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Clifford Lam with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Clifford Lam more than expected).

Fields of papers citing papers by Clifford Lam

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Clifford Lam. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Clifford Lam. The network helps show where Clifford Lam may publish in the future.

Co-authorship network of co-authors of Clifford Lam

This figure shows the co-authorship network connecting the top 25 collaborators of Clifford Lam. A scholar is included among the top collaborators of Clifford Lam based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Clifford Lam. Clifford Lam is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

1.

Lam, Clifford, et al.. (2025). Tensor time series imputation through tensor factor modelling. Journal of Econometrics. 249. 105974–105974.

2.

Chen, Weilin & Clifford Lam. (2024). Rank and factor loadings estimation in time series tensor factor model by pre-averaging. The Annals of Statistics. 52(1). 4 indexed citations

3.

Li, Zeng, Clifford Lam, Jianfeng Yao, & Qiwei Yao. (2019). On testing for high-dimensional white noise. The Annals of Statistics. 47(6). 22 indexed citations

4.

Lam, Clifford. (2019). High‐dimensional covariance matrix estimation. Wiley Interdisciplinary Reviews Computational Statistics. 12(2). 30 indexed citations

5.

Lam, Clifford, et al.. (2018). A nonparametric eigenvalue-regularized integrated covariance matrix estimator for asset return data. Journal of Econometrics. 206(1). 226–257. 7 indexed citations

6.

Lam, Clifford, et al.. (2017). Nonlinear shrinkage estimation of large integrated covariance matrices. Biometrika. 104(2). 481–488. 5 indexed citations

7.

Lam, Clifford. (2016). Nonparametric eigenvalue-regularized precision or covariance matrix estimator. The Annals of Statistics. 44(3). 36 indexed citations

8.

Lam, Clifford & Pedro Souza. (2015). Detection and Estimation of Block Structure in Spatial Weight Matrix. Econometric Reviews. 35(8-10). 1347–1376. 14 indexed citations

9.

Lam, Clifford & Pedro Souza. (2014). Regularization for Spatial Panel Time Series Using the Adaptive LASSO. RePEc: Research Papers in Economics. 3 indexed citations

10.

Lam, Clifford, et al.. (2011). Estimation of latent factors for high-dimensional time series. Biometrika. 98(4). 901–918. 112 indexed citations

11.

Lam, Clifford & Jianqing Fan. (2008). Profile-kernel likelihood inference with diverging number of parameters. The Annals of Statistics. 36(5). 2232–2260. 87 indexed citations

12.

Lam, Clifford, et al.. (1997). A Mixed-Effects Model for the Analysis of Circular Measurements. Technometrics. 39(2). 119–126. 5 indexed citations

13.

Lam, Clifford, et al.. (1997). A Mixed-Effects Model for the Analysis of Circular Measurements. Technometrics. 39(2). 119–119. 7 indexed citations

14.

Lam, Clifford, et al.. (1996). Confidence Limits for Proportion of Conformance. Journal of Quality Technology. 28(4). 439–445. 16 indexed citations

15.

Lam, Clifford & Ruey Huei Yeh. (1994). Comparison of sequential and continuous inspection strategies for deteriorating systems. Advances in Applied Probability. 26(2). 423–435. 25 indexed citations

16.

Lam, Clifford & Ruey Huei Yeh. (1994). Comparison of sequential and continuous inspection strategies for deteriorating systems. Advances in Applied Probability. 26(2). 423–435. 1 indexed citations

17.

Lam, Clifford & Ruey Huei Yeh. (1994). Optimal replacement policies for multistate deteriorating systems. Naval Research Logistics (NRL). 41(3). 303–315. 38 indexed citations

18.

Lam, Clifford & Ruey Huei Yeh. (1994). Optimal maintenance-policies for deteriorating systems under various maintenance strategies. IEEE Transactions on Reliability. 43(3). 423–430. 86 indexed citations

19.

Lam, Clifford. (1993). Superposition of Markov renewal processes and applications. Advances in Applied Probability. 25(3). 585–606.

20.

Lam, Clifford. (1993). Superposition of Markov renewal processes and applications. Advances in Applied Probability. 25(3). 585–606. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact