MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 09/01/99 through 09/30/99
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 757 1,144 1,901
Davis 639 32 671
Irvine 501 0 501
Los Angeles 547 956 1,503
Riverside 96 224 320
San Diego 165 661 826
San Francisco 489 21 510
Santa Barbara 144 570 714
Santa Cruz 185 211 396
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 39 172 211
Other-Network UC n/a 793 793
_______ ______ _____
3,562 4,784 8,346
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 75 390 4,782
2-4 a.m. 20 100 2,013
4-6 a.m. 39 141 2,245
6-8 a.m. 152 529 4,657
8-10 a.m. 776 2,574 27,955
10-12 a.m. 1,438 5,329 84,077
12-2 p.m. 1,558 6,144 72,272
2-4 p.m. 1,863 7,742 84,340
4-6 p.m. 1,251 5,402 60,756
6-8 p.m. 525 2,368 33,034
8-10 p.m. 385 1,924 21,717
10-12 p.m. 264 1,235 19,155
__________ __________ __________ _________________
Total: 8,346 33,878 417,003
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 3,303 4,613 7,916
Davis 2,287 101 2,388
Irvine 1,943 0 1,943
Los Angeles 2,637 4,968 7,605
Riverside 392 923 1,315
San Diego 416 2,248 2,664
San Francisco 1,848 39 1,887
Santa Barbara 550 2,115 2,665
Santa Cruz 1,256 837 2,093
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 55 656 711
Other-Network UC n/a 2,691 2,691
_______ ______ _____
14,687 19,191 33,878
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 40,042 80,685 120,727
Davis 22,001 1,170 23,171
Irvine 18,413 0 18,413
Los Angeles 37,949 54,282 92,231
Riverside 2,053 12,912 14,965
San Diego 2,353 21,819 24,172
San Francisco 27,067 2,312 29,379
Santa Barbara 3,850 23,451 27,301
Santa Cruz 10,629 10,070 20,699
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8,298 6,506 14,804
Other-Network UC n/a 31,141 31,141
_______ ______ _____
172,655 244,348 417,003
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 1.8
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) 8:51
Average session length (minutes:seconds) 14:36
Longest session recorded (minutes:seconds) 481:25
Average number of searches completed per session 4.0
Retrievals per search - median 11.0
Retrievals per search - average 945.0
Retrievals per search - standard deviation 7224.8
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 57.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 30,423 28.8%
DISPLAY (excluding automatic displays) 44,237 41.9%
BROWSE 160 0.2%
SELECT 38 0.0%
HELP 1,541 1.5%
EXPLAIN 1,857 1.8%
SET/RESET 2,306 2.2%
SHOW 404 0.4%
ADD ON (AND, OR, AND NOT) 3,447 3.3%
LOGON or LOGOFF 12,258 11.6%
COMMENT 0 0.0%
SAVE 5,461 5.2%
USE 21 0.0%
OTHER 3,599 3.4%
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 13,425 39.8% 2,654 19.8% 18 71.5 717.9
TITLE WORD 3,626 10.8% 1,006 27.7% 7 143.7 1135.4
EXACT TITLE 702 2.1% 298 42.4% 1 13.0 49.4
JOURNAL 804 2.4% 220 27.4% 652 3518.0 12303.7
EXACT JOURNAL 392 1.2% 125 31.9% 421 2486.3 12641.9
SUBJECT 3,191 9.5% 1,722 54.0% 1,077 6196.5 15541.6
EXACT SUBJECT 143 0.4% 56 39.2% 1,337 3813.8 8507.0
KEYWORD 8,290 24.6% 1,181 14.2% 62 2063.4 12120.0
FORM/PUB TYPE 129 0.4% 16 12.4% 166 3679.0 10427.7
DATE 1,823 5.4% 257 14.1% 7 104.3 500.8
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 15 0.0% 2 13.3% 161 165.7 46.9
AUTHOR AFFIL. 17 0.1% 7 41.2% 9 69.8 87.9
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 137 0.4% 26 19.0% 303 1946.4 3048.2
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 727 2.2% 152 20.9% 4 230.6 2059.4
EXACT PE 121 0.4% 19 15.7% 2 11.4 36.0
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 163 0.5% 43 26.4% 68 4078.0 8957.5
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 3,537 11.8% 765 21.6% 7 239.8 1763.7
Single 26,465 88.2% 6,222 23.5% 35 1379.9 8929.4
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 156 97.5% 45 28.8% 2 5.4 8.5
EXACT SUBJECT 4 2.5% 0 0.0% 2 2.0 1.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.3%
SHORT 90.7%
LONG 1.4%
TAGS 0.2%
FIELDS 1.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 2.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.6%
Ten most frequent errors:
1. First word of command is invalid 31.1%
2. NS command - no next screen 30.7%
3. FIND command with invalid index name 9.2%
4. PS command - no previous screen 5.5%
5. DISPLAY command contains invalid word 4.4%
6. Valid command at an inappropriate time 2.5%
7. Search term missing from search command 1.7%
8. DISPLAY command - no FIND results 1.2%
9. Command contains escape or arrow key 1.2%
10. Add-on search, no index name after verb 1.1%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 29.8%
2. GUIDE 19.1%
3. FIND (PSY DB) 9.0%
4. COMMANDS (ABI/PSY DBS) 5.7%
5. Unrecognized term 4.5%
6. INDEXES (PSY DB) 4.1%
7. ADDON SEARCH 3.5%
8. DISPLAY (INS/PSY DBS) 3.3%
9. FIND LOCATION 1.3%
10. MAIL 1.3%
11. All others 18.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.3%
2. First word of command is invalid 13.4%
3. DISPLAY command-first of >1 screen 8.9%
4. FIND command with invalid index name 6.8%
5. FIND command with zero results 6.5%
6. DISPLAY command-complete in one screen 6.5%
7. DISPLAY command - middle of >1 screen 6.0%
8. FIND command retrieves >1 book 5.7%
9. DISPLAY command - last of >1 screen 3.7%
10. NS command - no next screen 2.6%
11. All others 20.6%
Ten most frequent SHOW requests:
1. HISTORY 47.2%
2. SEARCH 32.5%
3. MAIL STATUS 7.1%
4. MAIL SETTINGS 4.7%
5. SETTINGS (INS/PSY DBS) 2.4%
6. GLOSSARY 2.1%
7. FORM NAMES (PSY DB) 1.3%
8. DISPLAY (MED/INS/PSY DBS) 0.8%
9. SYSTEM NEWS 0.5%
10. STOPWORDS (PSY DB) 0.3%
11. All others 1.1%