MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 10/01/99 through 10/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 951 1,501 2,452
Davis 914 28 942
Irvine 1,018 0 1,018
Los Angeles 640 1,273 1,913
Riverside 308 282 590
San Diego 140 675 815
San Francisco 474 12 486
Santa Barbara 378 567 945
Santa Cruz 875 352 1,227
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 56 154 210
Other-Network UC n/a 1,013 1,013
_______ ______ _____
5,754 5,857 11,611
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 138 776 9,720
2-4 a.m. 40 152 1,016
4-6 a.m. 56 153 1,511
6-8 a.m. 115 425 4,940
8-10 a.m. 920 3,254 32,805
10-12 a.m. 1,911 7,179 77,264
12-2 p.m. 2,263 9,571 111,928
2-4 p.m. 2,622 11,279 127,204
4-6 p.m. 1,771 7,320 81,556
6-8 p.m. 754 3,407 42,110
8-10 p.m. 601 2,768 33,594
10-12 p.m. 420 2,092 24,309
__________ __________ __________ _________________
Total: 11,611 48,376 547,957
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 4,072 6,119 10,191
Davis 3,308 77 3,385
Irvine 4,024 0 4,024
Los Angeles 2,930 5,252 8,182
Riverside 1,294 1,179 2,473
San Diego 364 2,356 2,720
San Francisco 2,002 50 2,052
Santa Barbara 1,638 2,107 3,745
Santa Cruz 5,144 1,831 6,975
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 183 649 832
Other-Network UC n/a 3,797 3,797
_______ ______ _____
24,959 23,417 48,376
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 44,852 94,135 138,987
Davis 29,685 686 30,371
Irvine 40,176 0 40,176
Los Angeles 43,122 63,755 106,877
Riverside 12,177 13,975 26,152
San Diego 2,139 22,463 24,602
San Francisco 16,086 1,289 17,375
Santa Barbara 16,320 24,859 41,179
Santa Cruz 50,519 18,464 68,983
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3,420 6,342 9,762
Other-Network UC n/a 43,493 43,493
_______ ______ _____
258,496 289,461 547,957
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 2.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 9:48
Average session length (minutes:seconds) 15:03
Longest session recorded (minutes:seconds) 441:19
Average number of searches completed per session 4.1
Retrievals per search - median 11.0
Retrievals per search - average 1051.1
Retrievals per search - standard deviation 7874.3
Percent of searches completed with 0 results 24.1%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 60.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 43,468 27.9%
DISPLAY (excluding automatic displays) 68,594 44.1%
BROWSE 230 0.1%
SELECT 105 0.1%
HELP 2,755 1.8%
EXPLAIN 2,849 1.8%
SET/RESET 3,080 2.0%
SHOW 674 0.4%
ADD ON (AND, OR, AND NOT) 4,875 3.1%
LOGON or LOGOFF 17,243 11.1%
COMMENT 1 0.0%
SAVE 7,190 4.6%
USE 25 0.0%
OTHER 4,945 3.2%
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 16,029 33.3% 3,110 19.4% 17 62.5 204.3
TITLE WORD 5,320 11.1% 1,659 31.2% 8 134.3 1168.1
EXACT TITLE 919 1.9% 368 40.0% 1 41.1 407.6
JOURNAL 1,459 3.0% 399 27.3% 641 2947.6 8432.8
EXACT JOURNAL 986 2.1% 263 26.7% 547 2948.9 15947.1
SUBJECT 5,789 12.0% 3,022 52.2% 650 5962.6 16177.4
EXACT SUBJECT 281 0.6% 138 49.1% 1,308 3476.6 7976.3
KEYWORD 13,365 27.8% 2,004 15.0% 57 2091.4 12261.3
FORM/PUB TYPE 360 0.7% 61 16.9% 33 1809.4 8173.6
DATE 2,043 4.2% 391 19.1% 5 56.4 296.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 8 0.0% 0 0.0% 56 486.1 789.4
AUTHOR AFFIL. 27 0.1% 11 40.7% 63 935.2 1998.6
CONFERENCE 3 0.0% 0 0.0% 67 58.7 34.3
LANGUAGE 120 0.2% 15 12.5% 102 1023.7 4077.9
ISSN 2 0.0% 0 0.0% 3,301 3300.5 3790.8
ISBN 1 0.0% 0 0.0% 1 1.0 0.0
ID NUMBER 18 0.0% 18 100% 0 0.0 0.0
PERIODICAL 1,019 2.1% 253 24.8% 4 151.8 1327.0
EXACT PE 138 0.3% 24 17.4% 2 16.7 50.5
RPE 9 0.0% 7 77.8% 408 408.0 574.2
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 191 0.4% 51 26.7% 121 3066.9 12924.7
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 4,908 11.4% 1,209 24.6% 7 272.4 2566.9
Single 38,050 88.6% 9,312 24.5% 39 1621.6 9861.5
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 209 90.9% 77 36.8% 2 8.4 13.6
EXACT SUBJECT 21 9.1% 7 33.3% 2 3.5 4.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.3%
SHORT 91.4%
LONG 1.3%
TAGS 0.1%
FIELDS 1.2%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.0%
Ten most frequent errors:
1. First word of command is invalid 32.6%
2. NS command - no next screen 28.9%
3. FIND command with invalid index name 8.1%
4. PS command - no previous screen 6.1%
5. DISPLAY command contains invalid word 4.2%
6. Valid command at an inappropriate time 2.4%
7. Search term missing from search command 2.0%
8. NS of SHOW/EXP command-no next screen 1.8%
9. Command contains escape or arrow key 1.4%
10. Add-on search, no index name after verb 1.2%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 33.0%
2. GUIDE 21.6%
3. FIND (PSY DB) 6.1%
4. COMMANDS (ABI/PSY DBS) 5.1%
5. INDEXES (PSY DB) 4.6%
6. Unrecognized term 4.2%
7. ADDON SEARCH 2.9%
8. DISPLAY (INS/PSY DBS) 2.6%
9. MAIL 2.3%
10. MAGS TEXT 1.3%
11. All others 16.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.1%
2. First word of command is invalid 14.8%
3. DISPLAY command-first of >1 screen 9.0%
4. FIND command with invalid index name 6.8%
5. DISPLAY command - middle of >1 screen 6.4%
6. FIND command with zero results 5.6%
7. DISPLAY command-complete in one screen 5.3%
8. FIND command retrieves >1 book 4.0%
9. DISPLAY command - last of >1 screen 3.3%
10. PS command - no previous screen 2.9%
11. All others 21.7%
Ten most frequent SHOW requests:
1. HISTORY 47.8%
2. SEARCH 30.7%
3. MAIL STATUS 10.1%
4. MAIL SETTINGS 3.1%
5. GLOSSARY 2.9%
6. SETTINGS (INS/PSY DBS) 1.5%
7. PUBLICATION TYPES (PSY DB) 1.1%
8. DISPLAY (MED/INS/PSY DBS) 0.5%
9. FORM NAMES (PSY DB) 0.3%
10. PSYCINFO NEWS 0.3%
11. All others 1.8%