MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/22/01 through 09/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 10 257 267
Davis 45 0 45
Irvine 123 0 123
Los Angeles 0 149 149
Riverside 2 2 4
San Diego 44 83 127
San Francisco 15 0 15
Santa Barbara 2 32 34
Santa Cruz 3 18 21
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 25 25
Los Alamos 0 1 1
Other - UC 0 29 29
Other-Network UC n/a 516 516
_______ ______ _____
244 1,143 1,387
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 861 1,862 15,840
INS90 179 321 1,196
INS85 129 212 902
INS80 116 169 548
INS69 102 214 993
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 38 179
2-4 a.m. 13 25 170
4-6 a.m. 16 31 620
6-8 a.m. 41 90 667
8-10 a.m. 201 360 3,243
10-12 a.m. 245 480 2,475
12-2 p.m. 218 456 3,176
2-4 p.m. 276 560 3,441
4-6 p.m. 183 371 3,637
6-8 p.m. 109 206 997
8-10 p.m. 26 88 249
10-12 p.m. 43 73 625
__________ __________ __________ _________________
Total: 1,387 2,778 19,479
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 26 536 562
Davis 127 0 127
Irvine 244 0 244
Los Angeles 0 309 309
Riverside 7 1 8
San Diego 74 175 249
San Francisco 41 0 41
Santa Barbara 3 73 76
Santa Cruz 4 58 62
Lawrence Berkeley 0 64 64
Lawrence Livermore 0 38 38
Los Alamos 0 1 1
Other - UC 0 91 91
Other-Network UC n/a 906 906
_______ ______ _____
526 2,252 2,778
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 59 4,864 4,923
Davis 1,069 0 1,069
Irvine 1,973 0 1,973
Los Angeles 0 2,897 2,897
Riverside 29 4 33
San Diego 1,083 1,434 2,517
San Francisco 200 0 200
Santa Barbara 1 515 516
Santa Cruz 24 204 228
Lawrence Berkeley 0 815 815
Lawrence Livermore 0 263 263
Los Alamos 0 0 0
Other - UC 0 576 576
Other-Network UC n/a 3,469 3,469
_______ ______ _____
4,438 15,041 19,479
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 2.1
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) 7:41
Average session length (minutes:seconds) 11:44
Longest session recorded (minutes:seconds) 146:38
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 789.7
Retrievals per search - standard deviation 7433.1
Percent of searches completed with 0 results 28.9%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 77.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,498 31.0%
DISPLAY (excluding automatic displays) 2,722 33.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 61 0.8%
EXPLAIN 96 1.2%
SET/RESET 846 10.5%
SHOW 17 0.2%
ADD ON (AND, OR, AND NOT) 280 3.5%
LOGON or LOGOFF 1,134 14.1%
COMMENT 0 0.0%
SAVE 99 1.2%
USE 3 0.0%
OTHER 299 3.7%
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 1,082 40.3% 265 24.5% 14 75.5 314.3
TITLE WORD 599 22.3% 287 47.9% 5 83.7 527.9
EXACT TITLE 14 0.5% 10 71.4% 1 1.5 1.0
JOURNAL 94 3.5% 36 38.3% 100 2578.9 4912.5
EXACT JOURNAL 29 1.1% 17 58.6% 1,233 3112.0 4688.3
SUBJECT 63 2.3% 20 31.7% 21 152.7 636.3
EXACT SUBJECT 4 0.1% 1 25.0% 7 10.3 8.5
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 609 22.7% 112 18.4% 36 3579.9 17046.5
SUBFILE 2 0.1% 0 0.0% 33 33.0 28.3
FORM 4 0.1% 0 0.0% 74 92.8 81.0
DATE 37 1.4% 9 24.3% 48 155.4 392.0
ADDED 1 0.0% 1 100% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 18 0.7% 4 22.2% 116 1318.4 2405.9
CONFERENCE 8 0.3% 4 50.0% 499 2170.8 3695.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 5 0.2% 1 20.0% 14 12.8 6.5
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 1 1.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 92 3.4% 18 19.6% 5 86.4 285.5
EXACT PE 15 0.6% 2 13.3% 2 4.7 9.0
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 5 0.2% 0 0.0% 180 126.8 103.4
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 206 8.3% 70 34.0% 6 56.7 199.2
Single 2,269 91.7% 647 28.5% 17 1284.9 9628.9
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 3.7%
SHORT 83.5%
LONG 1.5%
TAGS 0.0%
FIELDS 6.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 0.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.9%
Ten most frequent errors:
1. NS command - no next screen 43.2%
2. First word of command is invalid 29.0%
3. FIND command with invalid index name 5.6%
4. DISPLAY command contains invalid word 3.7%
5. NS of SHOW/EXP command-no next screen 2.9%
6. Max. # of ports to a Z39 db are in use 2.2%
7. DISPLAY command - no FIND results 1.6%
8. Valid command at an inappropriate time 1.3%
9. PS command - no previous screen 1.3%
10. Add-on search, no index name after verb 0.9%
11. All others 8.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 20.8%
2. INSPEC DATABASES 14.6%
3. GUIDE (INSPEC DBS) 8.3%
4. INDEXES (INSPEC DBS) 6.3%
5. INSPEC BACKFILES 5.2%
6. DATABASES 5.2%
7. LOCATE (INS/PSY DBS) 4.2%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.2%
9. DISPLAY (INS/PSY DBS) 4.2%
10. Unrecognized term 3.1%
11. All others 24.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.8%
2. First word of command is invalid 19.1%
3. FIND command with zero results 8.3%
4. NS command - no next screen 7.0%
5. FIND command with invalid index name 5.7%
6. DISPLAY command - last of >1 screen 5.1%
7. FIND command retrieves 1 book 4.5%
8. 850 3.2%
9. DISPLAY command-first of >1 screen 2.5%
10. NS of SHOW/EXP command-no next screen 2.5%
11. All others 17.2%
Ten most frequent SHOW requests:
1. HISTORY 58.8%
2. SEARCH 17.6%
3. INSPEC NEWS 11.8%
4. DATABASES 11.8%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)