MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/26/02 through 02/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 11 237 248
Davis 76 2 78
Irvine 69 0 69
Los Angeles 0 94 94
Riverside 0 1 1
San Diego 42 137 179
San Francisco 3 0 3
Santa Barbara 2 33 35
Santa Cruz 1 21 22
Lawrence Berkeley 0 34 34
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 0 54 54
Other-Network UC n/a 328 328
_______ ______ _____
204 954 1,158
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 759 1,733 15,921
INS90 160 278 1,567
INS85 103 206 715
INS80 76 132 526
INS69 60 125 1,127
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 44 75 396
2-4 a.m. 28 44 371
4-6 a.m. 33 57 497
6-8 a.m. 53 108 522
8-10 a.m. 169 351 2,183
10-12 a.m. 217 447 3,362
12-2 p.m. 167 334 3,019
2-4 p.m. 176 350 3,093
4-6 p.m. 141 381 3,834
6-8 p.m. 56 107 905
8-10 p.m. 42 133 1,131
10-12 p.m. 32 87 543
__________ __________ __________ _________________
Total: 1,158 2,474 19,856
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 24 598 622
Davis 162 6 168
Irvine 170 0 170
Los Angeles 0 229 229
Riverside 0 10 10
San Diego 60 293 353
San Francisco 9 0 9
Santa Barbara 2 83 85
Santa Cruz 5 40 45
Lawrence Berkeley 0 61 61
Lawrence Livermore 0 46 46
Los Alamos 0 0 0
Other - UC 5 93 98
Other-Network UC n/a 578 578
_______ ______ _____
437 2,037 2,474
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 298 4,440 4,738
Davis 1,169 0 1,169
Irvine 2,277 0 2,277
Los Angeles 0 2,433 2,433
Riverside 0 39 39
San Diego 326 3,318 3,644
San Francisco 46 0 46
Santa Barbara 0 1,066 1,066
Santa Cruz 4 406 410
Lawrence Berkeley 0 390 390
Lawrence Livermore 0 152 152
Los Alamos 0 0 0
Other - UC 12 630 642
Other-Network UC n/a 2,850 2,850
_______ ______ _____
4,132 15,724 19,856
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 1.8
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
_________________________________________
Median session length (minutes:seconds) 9:09
Average session length (minutes:seconds) 12:43
Longest session recorded (minutes:seconds) 210:16
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 333.5
Retrievals per search - standard deviation 3005.4
Percent of searches completed with 0 results 28.1%
Percent of searches entered that are long 6.9%
Percent of long searches completed
(includes partial results) 70.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,274 29.6%
DISPLAY (excluding automatic displays) 2,963 38.6%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 69 0.9%
EXPLAIN 101 1.3%
SET/RESET 636 8.3%
SHOW 9 0.1%
ADD ON (AND, OR, AND NOT) 200 2.6%
LOGON or LOGOFF 1,063 13.8%
COMMENT 0 0.0%
SAVE 67 0.9%
USE 1 0.0%
OTHER 294 3.8%
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 1,095 42.6% 276 25.2% 16 63.7 188.7
TITLE WORD 519 20.2% 271 52.2% 5 76.3 322.0
EXACT TITLE 21 0.8% 10 47.6% 1 26.3 78.9
JOURNAL 94 3.7% 40 42.6% 6 2940.1 11011.5
EXACT JOURNAL 45 1.8% 19 42.2% 24 1252.2 4086.6
SUBJECT 78 3.0% 24 30.8% 23 269.7 806.9
EXACT SUBJECT 5 0.2% 1 20.0% 10 9.0 3.6
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 504 19.6% 82 16.3% 38 1166.6 5625.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 9 0.4% 2 22.2% 28 48.1 74.8
DATE 36 1.4% 9 25.0% 6 61.1 117.4
ADDED 2 0.1% 0 0.0% 9 8.5 4.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 13 0.5% 2 15.4% 12 151.7 437.6
CONFERENCE 23 0.9% 6 26.1% 3 1638.2 6735.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 13 0.5% 7 53.8% 15 26.0 28.6
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 2 0.1% 0 0.0% 32 31.5 43.1
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 100 3.9% 18 18.0% 4 30.0 86.3
EXACT PE 10 0.4% 0 0.0% 8 37.9 68.4
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 1 0.0% 0 0.0% 22 22.0 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 334 15.0% 135 40.4% 4 27.3 97.0
Single 1,897 85.0% 496 26.1% 23 566.2 3934.3
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:
THESAURUS 2 100% 1 50.0% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 87.5%
LONG 1.9%
TAGS 0.4%
FIELDS 2.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 0.8%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 46.8%
2. First word of command is invalid 23.4%
3. FIND command with invalid index name 7.0%
4. DISPLAY command contains invalid word 3.7%
5. PS command - no previous screen 3.2%
6. DISPLAY command-record numbers too large 1.8%
7. DISPLAY command - no FIND results 1.1%
8. Search term missing from search command 1.1%
9. NS of SHOW/EXP command-no next screen 1.0%
10. Valid command at an inappropriate time 0.9%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 21.8%
2. GUIDE (INSPEC DBS) 14.9%
3. FIND (INSPEC DBS) 10.9%
4. INSPEC BACKFILES 8.9%
5. DATABASES 6.9%
6. LOCATE (INS/PSY DBS) 5.9%
7. DISPLAY (INS/PSY DBS) 5.0%
8. DISPLAYS (INS/PSY DBS) 3.0%
9. INDEXES (INSPEC DBS) 3.0%
10. ADDON SEARCH 3.0%
11. All others 16.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.8%
2. First word of command is invalid 9.4%
3. DISPLAY command-first of >1 screen 7.1%
4. FIND command with invalid index name 5.9%
5. FIND command retrieves >1 book 5.3%
6. NS command - no next screen 4.7%
7. DISPLAY command-complete in one screen 4.1%
8. SET command with invalid setting 3.5%
9. SET DB command entered w/o modifier 3.5%
10. DISPLAY command - middle of >1 screen 3.5%
11. All others 24.1%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 22.2%
3. INSPEC LOADING STATISTICS 11.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)