MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/01/00 through 12/31/00
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 376 782 1,158
Davis 364 18 382
Irvine 263 0 263
Los Angeles 158 500 658
Riverside 62 100 162
San Diego 25 315 340
San Francisco 232 0 232
Santa Barbara 17 202 219
Santa Cruz 34 125 159
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 14 99 113
Other-Network UC n/a 447 447
_______ ______ _____
1,545 2,588 4,133
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 85 440 3,550
2-4 a.m. 14 47 325
4-6 a.m. 15 50 307
6-8 a.m. 90 365 3,258
8-10 a.m. 434 1,474 12,558
10-12 a.m. 738 2,589 29,622
12-2 p.m. 708 2,912 30,354
2-4 p.m. 803 3,184 37,250
4-6 p.m. 582 2,563 28,539
6-8 p.m. 312 1,291 14,346
8-10 p.m. 225 845 8,428
10-12 p.m. 127 593 4,790
__________ __________ __________ _________________
Total: 4,133 16,353 173,327
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 1,573 3,278 4,851
Davis 1,326 57 1,383
Irvine 1,288 0 1,288
Los Angeles 731 2,059 2,790
Riverside 248 356 604
San Diego 75 992 1,067
San Francisco 809 0 809
Santa Barbara 81 934 1,015
Santa Cruz 128 619 747
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 10 360 370
Other-Network UC n/a 1,429 1,429
_______ ______ _____
6,269 10,084 16,353
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 18,760 40,624 59,384
Davis 11,263 359 11,622
Irvine 11,481 0 11,481
Los Angeles 9,217 21,036 30,253
Riverside 2,223 2,805 5,028
San Diego 329 8,106 8,435
San Francisco 10,205 0 10,205
Santa Barbara 1,786 9,411 11,197
Santa Cruz 775 5,523 6,298
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 113 4,567 4,680
Other-Network UC n/a 14,744 14,744
_______ ______ _____
66,152 107,175 173,327
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) 8:05
Average session length (minutes:seconds) 12:40
Longest session recorded (minutes:seconds) 202:05
Average number of searches completed per session 3.9
Retrievals per search - median 9.5
Retrievals per search - average 609.8
Retrievals per search - standard deviation 5374.5
Percent of searches completed with 0 results 22.3%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 64.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 14,745 29.0%
DISPLAY (excluding automatic displays) 22,051 43.4%
BROWSE 60 0.1%
SELECT 8 0.0%
HELP 597 1.2%
EXPLAIN 719 1.4%
SET/RESET 1,141 2.2%
SHOW 190 0.4%
ADD ON (AND, OR, AND NOT) 1,606 3.2%
LOGON or LOGOFF 6,189 12.2%
COMMENT 0 0.0%
SAVE 1,882 3.7%
USE 17 0.0%
OTHER 1,637 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 7,085 42.9% 1,334 18.8% 15 70.8 225.1
TITLE WORD 1,961 11.9% 561 28.6% 6 113.9 1142.2
EXACT TITLE 121 0.7% 50 41.3% 1 35.4 94.6
JOURNAL 379 2.3% 116 30.6% 267 1720.4 3943.2
EXACT JOURNAL 204 1.2% 52 25.5% 726 1670.8 2767.4
SUBJECT 1,341 8.1% 671 50.0% 464 4244.0 10170.5
EXACT SUBJECT 53 0.3% 15 28.3% 192 1088.2 2261.8
KEYWORD 4,077 24.7% 648 15.9% 43 1474.9 9163.9
FORM/PUB TYPE 68 0.4% 5 7.4% 20 135.3 310.2
DATE 815 4.9% 129 15.8% 6 119.8 798.7
ADDED 18 0.1% 3 16.7% 12 31.5 34.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 11 0.1% 6 54.5% 84 70.2 57.3
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 19 0.1% 2 10.5% 101 194.3 353.8
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 1 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 258 1.6% 68 26.4% 4 95.2 497.0
EXACT PE 17 0.1% 6 35.3% 2 8.7 13.2
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 78 0.5% 30 38.5% 48 143.5 288.0
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 1,838 12.6% 369 20.1% 6 89.9 617.2
Single 12,749 87.4% 2,947 23.1% 30 925.2 6197.2
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 38 63.3% 16 42.1% 1 4.9 8.4
EXACT SUBJECT 22 36.7% 7 31.8% 1 1.1 0.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 92.1%
LONG 0.7%
TAGS 0.1%
FIELDS 1.7%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 34.3%
2. First word of command is invalid 29.5%
3. FIND command with invalid index name 9.4%
4. PS command - no previous screen 5.9%
5. DISPLAY command contains invalid word 4.0%
6. Valid command at an inappropriate time 2.4%
7. Search term missing from search command 2.2%
8. Add-on search, no index name after verb 1.0%
9. DISPLAY command - no FIND results 0.9%
10. DISPLAY command-record numbers too large 0.9%
11. All others 9.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 27.5%
2. GUIDE 20.2%
3. FIND (PSY DB) 9.5%
4. Unrecognized term 5.8%
5. COMMANDS (ABI/PSY DBS) 5.3%
6. INDEXES (PSY DB) 5.1%
7. ADDON SEARCH 4.2%
8. MAIL 2.8%
9. DISPLAY (INS/PSY DBS) 1.9%
10. MAGS TEXT 1.1%
11. All others 16.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.6%
2. First word of command is invalid 12.9%
3. DISPLAY command-first of >1 screen 10.3%
4. FIND command with invalid index name 8.0%
5. DISPLAY command - middle of >1 screen 7.3%
6. FIND command with zero results 6.5%
7. FIND command retrieves >1 book 5.9%
8. DISPLAY command-complete in one screen 4.6%
9. DISPLAY command - last of >1 screen 3.1%
10. NS command - no next screen 2.8%
11. All others 16.2%
Ten most frequent SHOW requests:
1. HISTORY 58.1%
2. SEARCH 19.4%
3. MAIL STATUS 11.3%
4. GLOSSARY 3.8%
5. PSYCINFO NEWS 2.2%
6. SYSTEM NEWS 1.6%
7. MAIL SETTINGS 1.1%
8. PUBLICATION TYPES (PSY DB) 0.5%
9. 0414 0.5%
10. 0416 0.5%
11. All others 1.1%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)