MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 07/01/99 through 07/31/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 315 793 1,108
Davis 667 24 691
Irvine 538 0 538
Los Angeles 661 1,257 1,918
Riverside 268 206 474
San Diego 63 423 486
San Francisco 540 6 546
Santa Barbara 235 518 753
Santa Cruz 167 177 344
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 28 118 146
Other-Network UC n/a 795 795
_______ ______ _____
3,482 4,319 7,801
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 100 492 5,934
2-4 a.m. 27 141 2,095
4-6 a.m. 32 190 1,693
6-8 a.m. 118 503 4,280
8-10 a.m. 694 2,762 24,572
10-12 a.m. 1,454 5,872 57,480
12-2 p.m. 1,648 6,814 73,780
2-4 p.m. 1,625 6,823 69,351
4-6 p.m. 1,199 5,076 60,158
6-8 p.m. 440 2,062 26,146
8-10 p.m. 251 1,293 16,845
10-12 p.m. 213 1,454 14,091
__________ __________ __________ _________________
Total: 7,801 33,482 356,425
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 1,317 2,938 4,255
Davis 2,628 80 2,708
Irvine 2,626 0 2,626
Los Angeles 3,152 5,791 8,943
Riverside 1,468 923 2,391
San Diego 186 2,029 2,215
San Francisco 1,791 10 1,801
Santa Barbara 901 2,511 3,412
Santa Cruz 706 974 1,680
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 60 392 452
Other-Network UC n/a 2,988 2,988
_______ ______ _____
14,835 18,647 33,482
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,969 39,573 55,542
Davis 23,211 667 23,878
Irvine 26,738 0 26,738
Los Angeles 41,985 64,696 106,681
Riverside 14,537 8,394 22,931
San Diego 1,545 12,904 14,449
San Francisco 14,430 140 14,570
Santa Barbara 7,989 22,065 30,054
Santa Cruz 7,181 9,422 16,603
Lawrence Berkeley 0 61 61
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 507 6,097 6,604
Other-Network UC n/a 38,314 38,314
_______ ______ _____
154,092 202,333 356,425
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 1.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:46
Average session length (minutes:seconds) 14:28
Longest session recorded (minutes:seconds) 793:59
Average number of searches completed per session 4.2
Retrievals per search - median 9.0
Retrievals per search - average 924.6
Retrievals per search - standard deviation 7636.1
Percent of searches completed with 0 results 22.7%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 59.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 29,645 29.0%
DISPLAY (excluding automatic displays) 42,963 42.0%
BROWSE 132 0.1%
SELECT 51 0.0%
HELP 1,683 1.6%
EXPLAIN 1,878 1.8%
SET/RESET 2,155 2.1%
SHOW 491 0.5%
ADD ON (AND, OR, AND NOT) 3,821 3.7%
LOGON or LOGOFF 11,508 11.3%
COMMENT 0 0.0%
SAVE 4,827 4.7%
USE 25 0.0%
OTHER 3,285 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 12,575 38.5% 2,408 19.1% 16 68.3 213.9
TITLE WORD 3,052 9.3% 907 29.7% 9 113.3 665.5
EXACT TITLE 666 2.0% 253 38.0% 1 16.6 64.6
JOURNAL 792 2.4% 212 26.8% 429 3293.3 12661.6
EXACT JOURNAL 433 1.3% 112 25.9% 617 1714.0 2995.9
SUBJECT 2,799 8.6% 1,518 54.2% 663 6541.4 18709.7
EXACT SUBJECT 150 0.5% 86 57.3% 1,450 4718.5 7858.7
KEYWORD 9,376 28.7% 1,457 15.5% 59 2094.8 12671.3
FORM/PUB TYPE 149 0.5% 17 11.4% 61 1744.4 7406.2
DATE 1,571 4.8% 227 14.4% 5 42.2 267.2
ADDED 2 0.0% 1 50.0% 23 23.0 0.0
ARTICLE 5 0.0% 0 0.0% 296 296.0 0.0
AUTHOR AFFIL. 22 0.1% 8 36.4% 15 81.9 140.6
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
LANGUAGE 121 0.4% 14 11.6% 121 520.0 1220.7
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 3 0.0% 3 100% 0 0.0 0.0
PERIODICAL 630 1.9% 134 21.3% 4 290.9 2159.4
EXACT PE 176 0.5% 35 19.9% 2 7.7 23.8
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 3 0.0% 0 0.0% 4,066 2742.7 2292.1
Other indexes 168 0.5% 58 34.5% 40 4422.3 14927.6
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 3,260 11.1% 647 19.8% 6 308.8 5463.9
Single 26,007 88.9% 6,126 23.6% 35 1410.4 9407.5
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 126 95.5% 38 30.2% 2 10.7 20.0
EXACT SUBJECT 6 4.5% 3 50.0% 1 2.7 2.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 91.2%
LONG 1.3%
TAGS 0.1%
FIELDS 1.4%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. First word of command is invalid 31.7%
2. NS command - no next screen 30.6%
3. FIND command with invalid index name 8.5%
4. PS command - no previous screen 5.7%
5. DISPLAY command contains invalid word 4.4%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 1.5%
8. Command contains escape or arrow key 1.5%
9. Add-on search, no index name after verb 1.4%
10. NS of SHOW/EXP command-no next screen 1.2%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 29.6%
2. GUIDE 18.9%
3. FIND (PSY DB) 7.9%
4. COMMANDS (ABI/PSY DBS) 6.9%
5. Unrecognized term 4.7%
6. INDEXES (PSY DB) 4.0%
7. DISPLAY (INS/PSY DBS) 3.2%
8. ADDON SEARCH 2.5%
9. FIND LOCATION 2.0%
10. MAIL 1.7%
11. All others 18.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. First word of command is invalid 14.5%
3. DISPLAY command-first of >1 screen 10.6%
4. DISPLAY command - middle of >1 screen 7.1%
5. FIND command with invalid index name 7.0%
6. DISPLAY command-complete in one screen 5.5%
7. FIND command with zero results 5.2%
8. FIND command retrieves >1 book 4.2%
9. DISPLAY command - last of >1 screen 3.5%
10. NS command - no next screen 3.0%
11. All others 18.7%
Ten most frequent SHOW requests:
1. HISTORY 44.2%
2. SEARCH 35.9%
3. MAIL STATUS 9.4%
4. GLOSSARY 3.5%
5. SETTINGS (INS/PSY DBS) 2.0%
6. SYSTEM NEWS 1.1%
7. MAIL SETTINGS 1.1%
8. LOCATION 0.7%
9. PSYCINFO NEWS 0.4%
10. DISPLAY (MED/INS/PSY DBS) 0.4%
11. All others 1.3%