MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/01/01 through 03/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 206 976 1,182
Davis 1,101 1 1,102
Irvine 364 0 364
Los Angeles 87 595 682
Riverside 85 128 213
San Diego 87 438 525
San Francisco 401 0 401
Santa Barbara 38 170 208
Santa Cruz 99 168 267
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 11 128 139
Other-Network UC n/a 673 673
_______ ______ _____
2,479 3,277 5,756
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 64 300 2,647
2-4 a.m. 41 153 2,909
4-6 a.m. 609 2,658 7,820
6-8 a.m. 107 296 4,839
8-10 a.m. 523 1,723 14,398
10-12 a.m. 951 3,057 31,206
12-2 p.m. 905 3,225 33,915
2-4 p.m. 1,053 3,691 38,012
4-6 p.m. 739 2,807 26,382
6-8 p.m. 324 1,392 15,194
8-10 p.m. 280 1,271 15,591
10-12 p.m. 160 843 10,530
__________ __________ __________ _________________
Total: 5,756 21,416 203,443
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 752 3,435 4,187
Davis 4,734 6 4,740
Irvine 1,280 0 1,280
Los Angeles 334 2,206 2,540
Riverside 323 617 940
San Diego 269 1,359 1,628
San Francisco 1,691 0 1,691
Santa Barbara 98 571 669
Santa Cruz 285 833 1,118
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 39 489 528
Other-Network UC n/a 2,095 2,095
_______ ______ _____
9,805 11,611 21,416
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,625 35,655 41,280
Davis 27,505 80 27,585
Irvine 13,775 0 13,775
Los Angeles 7,457 24,120 31,577
Riverside 3,036 4,658 7,694
San Diego 1,051 11,388 12,439
San Francisco 19,847 0 19,847
Santa Barbara 431 7,750 8,181
Santa Cruz 4,690 9,169 13,859
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 514 6,978 7,492
Other-Network UC n/a 19,714 19,714
_______ ______ _____
83,931 119,512 203,443
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 5:35
Average session length (minutes:seconds) 11:55
Longest session recorded (minutes:seconds) 395:55
Average number of searches completed per session 3.7
Retrievals per search - median 5.0
Retrievals per search - average 693.5
Retrievals per search - standard deviation 6734.5
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 2.7%
Percent of long searches completed
(includes partial results) 65.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19,241 30.4%
DISPLAY (excluding automatic displays) 24,949 39.5%
BROWSE 60 0.1%
SELECT 17 0.0%
HELP 673 1.1%
EXPLAIN 733 1.2%
SET/RESET 2,278 3.6%
SHOW 200 0.3%
ADD ON (AND, OR, AND NOT) 2,170 3.4%
LOGON or LOGOFF 8,574 13.6%
COMMENT 0 0.0%
SAVE 2,642 4.2%
USE 15 0.0%
OTHER 1,726 2.7%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 7,773 31.3% 1,539 19.8% 14 55.2 159.5
TITLE WORD 2,344 9.4% 660 28.2% 5 97.6 626.8
EXACT TITLE 299 1.2% 142 47.5% 1 24.2 77.1
JOURNAL 473 1.9% 154 32.6% 336 3773.5 21429.3
EXACT JOURNAL 191 0.8% 49 25.7% 830 2024.4 2875.4
SUBJECT 1,358 5.5% 674 49.6% 449 4004.7 10199.9
EXACT SUBJECT 2,161 8.7% 1,602 74.1% 2 256.6 1628.6
KEYWORD 4,668 18.8% 715 15.3% 54 2197.2 12933.8
FORM/PUB TYPE 72 0.3% 6 8.3% 49 1275.7 4740.3
DATE 3,153 12.7% 1,793 56.9% 4 31.0 173.3
ADDED 1 0.0% 0 0.0% 27 27.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 8 0.0% 0 0.0% 114 111.1 108.3
CONFERENCE 1 0.0% 0 0.0% 4 4.0 0.0
LANGUAGE 43 0.2% 2 4.7% 73 3833.9 16953.8
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 539 2.2% 2 0.4% 1 1.0 0.0
PERIODICAL 350 1.4% 63 18.0% 4 175.4 2224.1
EXACT PE 68 0.3% 11 16.2% 2 4.0 4.8
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 1,366 5.5% 842 61.6% 3 168.3 2269.6
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 4,447 23.4% 2,158 48.5% 4 143.3 2554.9
Single 14,592 76.6% 3,087 21.2% 27 1157.1 8792.5
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
SUBJECT 58 96.7% 12 20.7% 2 6.2 11.3
EXACT SUBJECT 2 3.3% 0 0.0% 2 1.5 0.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 87.1%
LONG 1.0%
TAGS 2.3%
FIELDS 3.7%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. NS command - no next screen 28.0%
2. DISPLAY command - no FIND results 22.7%
3. First word of command is invalid 20.6%
4. FIND command with invalid index name 7.3%
5. PS command - no previous screen 3.7%
6. DISPLAY command contains invalid word 3.2%
7. Valid command at an inappropriate time 1.9%
8. Search term missing from search command 1.8%
9. Add-on search, no index name after verb 1.1%
10. NS of SHOW/EXP command-no next screen 1.0%
11. All others 8.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 21.7%
2. GUIDE 21.1%
3. FIND (PSY DB) 9.8%
4. COMMANDS (ABI/PSY DBS) 6.4%
5. INDEXES (PSY DB) 6.0%
6. MAIL 3.5%
7. Unrecognized term 3.3%
8. DISPLAY (INS/PSY DBS) 3.1%
9. SEARCH (PSY DB) 2.2%
10. ADDON SEARCH 2.0%
11. All others 20.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.4%
2. First word of command is invalid 13.2%
3. FIND command with invalid index name 7.5%
4. FIND command with zero results 7.3%
5. DISPLAY command-first of >1 screen 7.3%
6. DISPLAY command - middle of >1 screen 6.8%
7. DISPLAY command - last of >1 screen 4.3%
8. NS command - no next screen 3.8%
9. FIND command retrieves >1 book 3.2%
10. DISPLAY command-complete in one screen 2.3%
11. All others 20.9%
Ten most frequent SHOW requests:
1. HISTORY 52.6%
2. SEARCH 22.4%
3. MAIL STATUS 9.2%
4. PSYCINFO NEWS 3.1%
5. GLOSSARY 2.6%
6. SETTINGS (INS/PSY DBS) 2.0%
7. PSYCINFO LOADING STATISTICS 1.5%
8. DATABASES 1.5%
9. SYSTEM NEWS 1.0%
10. BIBLIOGRAPHIC SOFTWARE 0.5%
11. All others 3.6%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)