MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/06/01 through 01/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 422 427
Davis 68 2 70
Irvine 90 0 90
Los Angeles 4 188 192
Riverside 3 23 26
San Diego 82 128 210
San Francisco 26 0 26
Santa Barbara 18 116 134
Santa Cruz 5 23 28
Lawrence Berkeley 0 56 56
Lawrence Livermore 0 29 29
Los Alamos 0 0 0
Other - UC 1 60 61
Other-Network UC n/a 417 417
_______ ______ _____
302 1,464 1,766
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,141 2,776 24,816
INS90 241 460 2,085
INS85 134 227 1,178
INS80 138 243 1,005
INS69 112 277 1,658
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 18 40 125
2-4 a.m. 32 60 434
4-6 a.m. 18 45 470
6-8 a.m. 98 310 1,867
8-10 a.m. 165 411 2,267
10-12 a.m. 322 747 6,678
12-2 p.m. 300 656 4,568
2-4 p.m. 346 766 6,313
4-6 p.m. 201 441 3,706
6-8 p.m. 122 260 2,648
8-10 p.m. 52 82 847
10-12 p.m. 92 165 819
__________ __________ __________ _________________
Total: 1,766 3,983 30,742
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 14 813 827
Davis 123 2 125
Irvine 209 0 209
Los Angeles 4 450 454
Riverside 3 66 69
San Diego 366 255 621
San Francisco 62 0 62
Santa Barbara 42 374 416
Santa Cruz 8 38 46
Lawrence Berkeley 0 117 117
Lawrence Livermore 0 105 105
Los Alamos 0 0 0
Other - UC 2 195 197
Other-Network UC n/a 735 735
_______ ______ _____
833 3,150 3,983
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 6,571 6,583
Davis 904 12 916
Irvine 2,498 0 2,498
Los Angeles 0 2,742 2,742
Riverside 28 381 409
San Diego 2,232 1,490 3,722
San Francisco 430 0 430
Santa Barbara 285 3,458 3,743
Santa Cruz 179 196 375
Lawrence Berkeley 0 684 684
Lawrence Livermore 0 365 365
Los Alamos 0 0 0
Other - UC 0 1,342 1,342
Other-Network UC n/a 6,933 6,933
_______ ______ _____
6,568 24,174 30,742
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 6.4
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) 5:48
Average session length (minutes:seconds) 12:11
Longest session recorded (minutes:seconds) 468:29
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1962.1
Retrievals per search - standard deviation 24472
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 79.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,487 30.9%
DISPLAY (excluding automatic displays) 3,753 33.3%
BROWSE 1 0.0%
SELECT 2 0.0%
HELP 103 0.9%
EXPLAIN 153 1.4%
SET/RESET 999 8.9%
SHOW 47 0.4%
ADD ON (AND, OR, AND NOT) 495 4.4%
LOGON or LOGOFF 1,591 14.1%
COMMENT 0 0.0%
SAVE 213 1.9%
USE 1 0.0%
OTHER 441 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 1,720 44.4% 407 23.7% 14 76.1 448.2
TITLE WORD 735 19.0% 321 43.7% 6 112.7 528.1
EXACT TITLE 17 0.4% 13 76.5% 2 3.5 4.4
JOURNAL 165 4.3% 61 37.0% 73 5066.8 16541.9
EXACT JOURNAL 24 0.6% 16 66.7% 880 1131.4 1199.9
SUBJECT 156 4.0% 46 29.5% 16 451.3 1826.7
EXACT SUBJECT 7 0.2% 3 42.9% 7,714 7688.5 8815.7
THESAURUS 10 0.3% 8 80.0% 10,925 10925.0 0.0
EXACT THESAURUS 7 0.2% 0 0.0% 4,138 4709.0 2456.7
KEYWORD 656 16.9% 121 18.4% 62 7296.1 46488.8
SUBFILE 3 0.1% 0 0.0% 40 96.0 117.5
FORM 55 1.4% 22 40.0% 9 111.4 200.3
DATE 64 1.7% 14 21.9% 28 167.8 372.6
ADDED 26 0.7% 25 96.2% 3 3.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 30 0.8% 7 23.3% 20 156.0 351.4
CONFERENCE 22 0.6% 6 27.3% 180 408.2 588.7
LANGUAGE 1 0.0% 0 0.0% 30 30.0 0.0
CHEMICAL NAME 12 0.3% 2 16.7% 236 404.1 505.1
ISSN 3 0.1% 2 66.7% 15,949 15949.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 140 3.6% 23 16.4% 7 163.3 1159.8
EXACT PE 22 0.6% 4 18.2% 3 39.9 117.8
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 409 11.8% 178 43.5% 7 183.3 1037.5
Single 3,043 88.1% 742 24.4% 19 2042.0 22893.4
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% 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 4.3%
SHORT 80.2%
LONG 2.7%
TAGS 0.1%
FIELDS 6.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 39.5%
2. First word of command is invalid 28.0%
3. FIND command with invalid index name 6.7%
4. Max. # of ports to a Z39 db are in use 4.6%
5. DISPLAY command contains invalid word 2.9%
6. DISPLAY command - no FIND results 2.2%
7. NS of SHOW/EXP command-no next screen 1.6%
8. Command contains escape or arrow key 1.5%
9. PS command - no previous screen 1.3%
10. Valid command at an inappropriate time 0.9%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 24.8%
2. INSPEC DATABASES 12.4%
3. GUIDE (INSPEC DBS) 10.5%
4. INDEXES (INSPEC DBS) 8.5%
5. COMMANDS (INS/PSY/ABI/BIO DBS) 7.8%
6. INSPEC BACKFILES 5.9%
7. LOCATE (INS/PSY DBS) 3.9%
8. Unrecognized term 3.9%
9. DATABASES 2.0%
10. 1752 2.0%
11. All others 18.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.2%
2. First word of command is invalid 10.5%
3. DISPLAY command - middle of >1 screen 8.2%
4. FIND command with invalid index name 7.0%
5. FIND command with zero results 5.9%
6. DISPLAY command - last of >1 screen 4.3%
7. NS command - no next screen 3.9%
8. FIND command retrieves >1 book 3.9%
9. NS of SHOW/EXP command-no next screen 3.9%
10. DISPLAY command-first of >1 screen 3.5%
11. All others 22.7%
Ten most frequent SHOW requests:
1. HISTORY 67.4%
2. INSPEC LOADING STATISTICS 15.2%
3. SETTINGS (INS/PSY DBS) 4.3%
4. INSPEC NEWS 4.3%
5. FORM NAMES (INSPEC DBS) 2.2%
6. SYSTEM NEWS 2.2%
7. FIND DISPLAY 2.2%
8. SEARCH 2.2%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)