MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 11/10/01 through 11/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 337 339
Davis 56 2 58
Irvine 46 0 46
Los Angeles 0 105 105
Riverside 4 3 7
San Diego 62 134 196
San Francisco 14 0 14
Santa Barbara 3 23 26
Santa Cruz 0 22 22
Lawrence Berkeley 0 42 42
Lawrence Livermore 0 17 17
Los Alamos 0 0 0
Other - UC 0 32 32
Other-Network UC n/a 271 271
_______ ______ _____
187 988 1,175
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 732 1,672 14,468
INS90 157 306 2,674
INS85 109 189 1,217
INS80 90 153 712
INS69 87 181 4,209
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 20 70 343
2-4 a.m. 16 25 227
4-6 a.m. 13 42 364
6-8 a.m. 31 82 752
8-10 a.m. 126 247 1,607
10-12 a.m. 219 409 5,169
12-2 p.m. 227 477 2,955
2-4 p.m. 242 529 3,521
4-6 p.m. 130 291 3,443
6-8 p.m. 72 129 3,552
8-10 p.m. 56 104 1,118
10-12 p.m. 23 96 229
__________ __________ __________ _________________
Total: 1,175 2,501 23,280
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 2 660 662
Davis 183 7 190
Irvine 153 0 153
Los Angeles 0 203 203
Riverside 4 14 18
San Diego 134 289 423
San Francisco 47 0 47
Santa Barbara 6 48 54
Santa Cruz 0 42 42
Lawrence Berkeley 0 99 99
Lawrence Livermore 0 59 59
Los Alamos 0 0 0
Other - UC 0 81 81
Other-Network UC n/a 470 470
_______ ______ _____
529 1,972 2,501
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 4,470 4,485
Davis 586 0 586
Irvine 1,257 0 1,257
Los Angeles 0 1,431 1,431
Riverside 27 82 109
San Diego 859 2,150 3,009
San Francisco 209 0 209
Santa Barbara 26 604 630
Santa Cruz 0 270 270
Lawrence Berkeley 0 4,477 4,477
Lawrence Livermore 0 331 331
Los Alamos 0 0 0
Other - UC 0 688 688
Other-Network UC n/a 5,798 5,798
_______ ______ _____
2,979 20,301 23,280
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 8:49
Average session length (minutes:seconds) 14:19
Longest session recorded (minutes:seconds) 643:18
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 759.7
Retrievals per search - standard deviation 8252.6
Percent of searches completed with 0 results 29.9%
Percent of searches entered that are long 5.8%
Percent of long searches completed
(includes partial results) 78.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,314 31.7%
DISPLAY (excluding automatic displays) 2,566 35.2%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 49 0.7%
EXPLAIN 99 1.4%
SET/RESET 703 9.6%
SHOW 22 0.3%
ADD ON (AND, OR, AND NOT) 187 2.6%
LOGON or LOGOFF 1,009 13.8%
COMMENT 0 0.0%
SAVE 37 0.5%
USE 1 0.0%
OTHER 308 4.2%
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 1,051 40.9% 255 24.3% 11 56.7 203.6
TITLE WORD 511 19.9% 267 52.3% 8 787.3 11143.1
EXACT TITLE 21 0.8% 9 42.9% 4 10.8 17.9
JOURNAL 64 2.5% 25 39.1% 33 1677.7 4591.1
EXACT JOURNAL 59 2.3% 30 50.8% 56 5575.0 16625.1
SUBJECT 103 4.0% 24 23.3% 89 3786.5 17033.9
EXACT SUBJECT 8 0.3% 1 12.5% 80 2606.3 4762.6
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 506 19.7% 107 21.1% 34 2660.3 16057.1
SUBFILE 2 0.1% 0 0.0% 30 30.0 19.8
FORM 38 1.5% 15 39.5% 19 213.9 870.7
DATE 50 1.9% 10 20.0% 5 61.0 213.3
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. 16 0.6% 1 6.3% 33 777.2 2637.4
CONFERENCE 6 0.2% 1 16.7% 1,496 1795.6 2002.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 19 0.7% 8 42.1% 19 14.7 6.8
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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 87 3.4% 20 23.0% 5 67.1 257.6
EXACT PE 23 0.9% 1 4.3% 2 15.8 27.4
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 3 0.1% 0 0.0% 85 60.0 43.3
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 278 12.2% 101 36.3% 5 105.0 577.5
Single 2,004 87.8% 570 28.4% 16 1282.7 10794.7
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 1 100% 0 0.0% 5 5.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 82.2%
LONG 4.0%
TAGS 0.3%
FIELDS 2.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.7%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 41.6%
2. First word of command is invalid 27.6%
3. Max. # of ports to a Z39 db are in use 5.4%
4. FIND command with invalid index name 4.9%
5. DISPLAY command contains invalid word 3.7%
6. Valid command at an inappropriate time 2.1%
7. NS of SHOW/EXP command-no next screen 2.0%
8. PS command - no previous screen 1.3%
9. DISPLAY command - no FIND results 1.2%
10. Search term missing from search command 1.1%
11. All others 9.2%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.1%
2. INSPEC DATABASES 12.1%
3. GUIDE (INSPEC DBS) 10.1%
4. MAIL 9.1%
5. LOCATE (INS/PSY DBS) 6.1%
6. INDEXES (INSPEC DBS) 5.1%
7. SAVE 5.1%
8. DISPLAY (INS/PSY DBS) 4.0%
9. DATABASES 4.0%
10. 1752 4.0%
11. All others 26.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.9%
2. First word of command is invalid 13.5%
3. DISPLAY command - middle of >1 screen 10.8%
4. DISPLAY command - last of >1 screen 6.1%
5. 3 HELP commands issued from same code 4.1%
6. Help requested from SHOW SEARCH 4.1%
7. FIND command retrieves >1 book 4.1%
8. FIND command with invalid index name 3.4%
9. DISPLAY command-complete in one screen 3.4%
10. DISPLAY command-first of >1 screen 3.4%
11. All others 26.4%
Ten most frequent SHOW requests:
1. HISTORY 78.9%
2. MAIL STATUS 10.5%
3. MAIL SETTINGS 5.3%
4. SEARCH 5.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)