MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/02/02 through 03/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 257 261
Davis 107 9 116
Irvine 79 0 79
Los Angeles 0 87 87
Riverside 2 5 7
San Diego 29 143 172
San Francisco 7 0 7
Santa Barbara 0 37 37
Santa Cruz 3 23 26
Lawrence Berkeley 0 32 32
Lawrence Livermore 0 30 30
Los Alamos 0 0 0
Other - UC 0 5 5
Other-Network UC n/a 306 306
_______ ______ _____
231 934 1,165
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 699 1,570 17,069
INS90 163 300 1,638
INS85 118 224 1,187
INS80 98 204 1,058
INS69 87 192 1,203
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 39 91
2-4 a.m. 24 61 595
4-6 a.m. 27 43 384
6-8 a.m. 65 158 782
8-10 a.m. 172 328 3,410
10-12 a.m. 211 433 3,399
12-2 p.m. 200 414 4,549
2-4 p.m. 206 500 3,303
4-6 p.m. 126 301 3,312
6-8 p.m. 77 146 1,263
8-10 p.m. 24 37 337
10-12 p.m. 21 30 730
__________ __________ __________ _________________
Total: 1,165 2,490 22,155
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 4 595 599
Davis 257 10 267
Irvine 192 0 192
Los Angeles 0 195 195
Riverside 3 7 10
San Diego 62 328 390
San Francisco 12 0 12
Santa Barbara 0 69 69
Santa Cruz 7 46 53
Lawrence Berkeley 0 81 81
Lawrence Livermore 0 98 98
Los Alamos 0 0 0
Other - UC 0 14 14
Other-Network UC n/a 510 510
_______ ______ _____
537 1,953 2,490
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 5,924 5,924
Davis 3,253 0 3,253
Irvine 2,536 0 2,536
Los Angeles 0 2,129 2,129
Riverside 24 44 68
San Diego 838 2,292 3,130
San Francisco 32 0 32
Santa Barbara 0 316 316
Santa Cruz 24 330 354
Lawrence Berkeley 0 792 792
Lawrence Livermore 0 393 393
Los Alamos 0 0 0
Other - UC 0 216 216
Other-Network UC n/a 3,012 3,012
_______ ______ _____
6,707 15,448 22,155
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.2
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 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 10:46
Average session length (minutes:seconds) 13:52
Longest session recorded (minutes:seconds) 413:25
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 158.5
Retrievals per search - standard deviation 1252.3
Percent of searches completed with 0 results 26.3%
Percent of searches entered that are long 5.7%
Percent of long searches completed
(includes partial results) 75.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,309 29.9%
DISPLAY (excluding automatic displays) 3,015 39.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 40 0.5%
EXPLAIN 65 0.8%
SET/RESET 657 8.5%
SHOW 10 0.1%
ADD ON (AND, OR, AND NOT) 181 2.3%
LOGON or LOGOFF 1,072 13.9%
COMMENT 0 0.0%
SAVE 79 1.0%
USE 0 0.0%
OTHER 304 3.9%
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 980 37.9% 227 23.2% 13 53.4 225.6
TITLE WORD 494 19.1% 189 38.3% 6 141.8 1227.9
EXACT TITLE 13 0.5% 10 76.9% 1 1.0 0.0
JOURNAL 94 3.6% 35 37.2% 7 207.1 517.5
EXACT JOURNAL 31 1.2% 6 19.4% 129 1120.0 2059.3
SUBJECT 98 3.8% 30 30.6% 36 900.8 3642.1
EXACT SUBJECT 10 0.4% 1 10.0% 97 233.8 404.2
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 672 26.0% 150 22.3% 17 369.5 1851.5
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 19 0.7% 6 31.6% 51 123.5 198.5
DATE 58 2.2% 17 29.3% 8 138.7 754.3
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. 21 0.8% 2 9.5% 13 334.1 814.5
CONFERENCE 3 0.1% 3 100% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 9 0.3% 1 11.1% 26 192.6 443.1
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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 80 3.1% 9 11.2% 5 471.9 3567.3
EXACT PE 3 0.1% 0 0.0% 3 7.0 8.7
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 0 0.0% 0 0.0% 0 0.0 0.0
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 305 13.4% 85 27.9% 7 188.8 1493.2
Single 1,968 86.6% 516 26.2% 16 236.1 1514.0
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:
THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 87.5%
LONG 2.6%
TAGS 0.1%
FIELDS 2.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.5%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. NS command - no next screen 48.8%
2. First word of command is invalid 23.8%
3. FIND command with invalid index name 8.0%
4. DISPLAY command contains invalid word 3.0%
5. DISPLAY command-record numbers too large 2.5%
6. PS command - no previous screen 1.9%
7. Search term missing from search command 1.8%
8. DISPLAY command - no FIND results 1.5%
9. Single letter keyword search 1.3%
10. Valid command at an inappropriate time 0.8%
11. All others 6.7%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 13.8%
2. INDEXES (INSPEC DBS) 10.8%
3. FIND (INSPEC DBS) 9.2%
4. LOCATE (INS/PSY DBS) 7.7%
5. GUIDE (INSPEC DBS) 7.7%
6. INSPEC BACKFILES 6.2%
7. FIND (INSPEC DBS) 6.2%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 6.2%
9. I089 3.1%
10. Unrecognized term 3.1%
11. All others 26.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.9%
2. DISPLAY command - middle of >1 screen 13.3%
3. NS command - no next screen 8.6%
4. First word of command is invalid 7.6%
5. FIND command with zero results 7.6%
6. FIND command with invalid index name 4.8%
7. 3 HELP commands issued from same code 4.8%
8. FIND command retrieves >1 book 4.8%
9. Multi-index search with zero results 4.8%
10. DISPLAY command-complete in one screen 2.9%
11. All others 19.0%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. GLOSSARY 10.0%
3. SYSTEM NEWS 10.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)