MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 07/01/00 through 07/31/00
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 323 626 949
Davis 439 10 449
Irvine 337 0 337
Los Angeles 285 648 933
Riverside 110 173 283
San Diego 39 437 476
San Francisco 345 0 345
Santa Barbara 76 410 486
Santa Cruz 105 136 241
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 9 150 159
Other-Network UC n/a 821 821
_______ ______ _____
2,068 3,411 5,479
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 51 251 3,754
2-4 a.m. 19 81 778
4-6 a.m. 32 87 1,443
6-8 a.m. 111 342 9,960
8-10 a.m. 487 1,751 18,255
10-12 a.m. 1,049 3,855 37,459
12-2 p.m. 1,085 4,279 52,108
2-4 p.m. 1,224 4,738 54,583
4-6 p.m. 748 2,797 35,968
6-8 p.m. 310 1,356 15,999
8-10 p.m. 218 905 10,494
10-12 p.m. 145 584 5,736
__________ __________ __________ _________________
Total: 5,479 21,026 246,537
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 1,338 2,428 3,766
Davis 1,379 44 1,423
Irvine 1,517 0 1,517
Los Angeles 1,143 3,216 4,359
Riverside 417 742 1,159
San Diego 112 1,483 1,595
San Francisco 1,184 0 1,184
Santa Barbara 440 1,529 1,969
Santa Cruz 440 561 1,001
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 28 518 546
Other-Network UC n/a 2,507 2,507
_______ ______ _____
7,998 13,028 21,026
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,917 35,279 48,196
Davis 13,606 262 13,868
Irvine 18,139 0 18,139
Los Angeles 15,501 42,140 57,641
Riverside 3,759 8,151 11,910
San Diego 564 14,622 15,186
San Francisco 15,891 0 15,891
Santa Barbara 5,496 16,323 21,819
Santa Cruz 5,195 5,038 10,233
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 545 6,786 7,331
Other-Network UC n/a 26,323 26,323
_______ ______ _____
91,613 154,924 246,537
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 1.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:48
Average session length (minutes:seconds) 14:17
Longest session recorded (minutes:seconds) 395:06
Average number of searches completed per session 3.8
Retrievals per search - median 10.0
Retrievals per search - average 780.6
Retrievals per search - standard deviation 8390.4
Percent of searches completed with 0 results 22.4%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 64.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 18,853 29.0%
DISPLAY (excluding automatic displays) 26,618 40.9%
BROWSE 66 0.1%
SELECT 13 0.0%
HELP 760 1.2%
EXPLAIN 941 1.4%
SET/RESET 1,679 2.6%
SHOW 216 0.3%
ADD ON (AND, OR, AND NOT) 2,169 3.3%
LOGON or LOGOFF 7,936 12.2%
COMMENT 0 0.0%
SAVE 3,657 5.6%
USE 28 0.0%
OTHER 2,224 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 8,574 40.9% 1,577 18.4% 16 68.2 211.6
TITLE WORD 2,355 11.2% 759 32.2% 11 155.7 1084.5
EXACT TITLE 312 1.5% 165 52.9% 1 14.8 37.4
JOURNAL 560 2.7% 184 32.9% 379 1801.4 5623.0
EXACT JOURNAL 396 1.9% 82 20.7% 564 1547.9 2612.1
SUBJECT 1,904 9.1% 1,020 53.6% 449 4508.2 11894.9
EXACT SUBJECT 89 0.4% 42 47.2% 1,258 3023.4 5047.8
KEYWORD 4,939 23.6% 664 13.4% 58 2089.1 16637.0
FORM/PUB TYPE 80 0.4% 8 10.0% 46 874.1 3780.2
DATE 1,150 5.5% 170 14.8% 5 60.0 279.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 5 0.0% 3 60.0% 12 11.5 2.1
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
LANGUAGE 53 0.3% 5 9.4% 107 888.8 2660.8
ISSN 2 0.0% 1 50.0% 706 706.0 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 355 1.7% 64 18.0% 4 102.1 845.7
EXACT PE 82 0.4% 10 12.2% 2 25.8 97.9
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 91 0.4% 23 25.3% 60 1089.5 3561.1
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 2,227 11.9% 513 23.0% 6 105.3 872.0
Single 16,411 88.1% 3,741 22.8% 35 1170.7 10310.3
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 53 80.3% 16 30.2% 6 18.8 25.2
EXACT SUBJECT 13 19.7% 8 61.5% 1 3.6 5.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 90.9%
LONG 1.1%
TAGS 0.2%
FIELDS 1.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 31.8%
2. First word of command is invalid 29.6%
3. FIND command with invalid index name 9.2%
4. PS command - no previous screen 5.8%
5. DISPLAY command contains invalid word 4.9%
6. Valid command at an inappropriate time 2.3%
7. Search term missing from search command 2.2%
8. Add-on search, no index name after verb 1.4%
9. Command contains escape or arrow key 1.1%
10. DISPLAY command-record numbers too large 1.1%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.8%
2. LOCATE (INS/PSY DBS) 19.8%
3. FIND (PSY DB) 8.4%
4. INDEXES (PSY DB) 6.5%
5. COMMANDS (ABI/PSY DBS) 5.2%
6. Unrecognized term 5.2%
7. DISPLAY (INS/PSY DBS) 3.2%
8. ADDON SEARCH 3.1%
9. MAIL 2.9%
10. SEARCH (PSY DB) 1.5%
11. All others 20.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.9%
2. First word of command is invalid 14.2%
3. FIND command with zero results 7.9%
4. FIND command with invalid index name 7.5%
5. DISPLAY command-first of >1 screen 7.5%
6. FIND command retrieves >1 book 6.7%
7. DISPLAY command - middle of >1 screen 6.1%
8. DISPLAY command-complete in one screen 4.5%
9. DISPLAY command - last of >1 screen 2.9%
10. PS command - no previous screen 2.5%
11. All others 18.3%
Ten most frequent SHOW requests:
1. HISTORY 54.9%
2. SEARCH 29.4%
3. SETTINGS (INS/PSY DBS) 2.9%
4. MAIL SETTINGS 2.9%
5. GLOSSARY 2.0%
6. MAIL STATUS 2.0%
7. PSYCINFO NEWS 1.5%
8. SYSTEM NEWS 1.5%
9. PUBLICATION TYPES (PSY DB) 0.5%
10. STOPWORDS (PSY DB) 0.5%
11. All others 2.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)