MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 11/01/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 13 1,218 1,231
Davis 270 14 284
Irvine 230 0 230
Los Angeles 0 439 439
Riverside 20 29 49
San Diego 216 422 638
San Francisco 67 0 67
Santa Barbara 15 185 200
Santa Cruz 4 96 100
Lawrence Berkeley 0 207 207
Lawrence Livermore 0 51 51
Los Alamos 0 0 0
Other - UC 1 140 141
Other-Network UC n/a 1,402 1,402
_______ ______ _____
836 4,203 5,039
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,133 7,337 57,573
INS90 707 1,205 8,043
INS85 474 833 4,998
INS80 368 657 3,018
INS69 357 736 7,500
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 128 302 1,751
2-4 a.m. 67 148 1,146
4-6 a.m. 85 202 1,584
6-8 a.m. 156 399 3,480
8-10 a.m. 616 1,186 7,515
10-12 a.m. 949 1,849 14,360
12-2 p.m. 767 1,695 10,533
2-4 p.m. 967 2,147 16,118
4-6 p.m. 713 1,542 12,017
6-8 p.m. 279 591 6,112
8-10 p.m. 187 359 3,943
10-12 p.m. 125 348 2,573
__________ __________ __________ _________________
Total: 5,039 10,768 81,132
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 16 2,489 2,505
Davis 730 36 766
Irvine 777 0 777
Los Angeles 0 868 868
Riverside 39 85 124
San Diego 452 1,168 1,620
San Francisco 141 0 141
Santa Barbara 26 377 403
Santa Cruz 9 179 188
Lawrence Berkeley 0 582 582
Lawrence Livermore 0 135 135
Los Alamos 0 0 0
Other - UC 2 362 364
Other-Network UC n/a 2,295 2,295
_______ ______ _____
2,192 8,576 10,768
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 90 19,187 19,277
Davis 3,865 666 4,531
Irvine 7,861 0 7,861
Los Angeles 0 7,186 7,186
Riverside 200 311 511
San Diego 2,547 7,564 10,111
San Francisco 578 0 578
Santa Barbara 78 3,263 3,341
Santa Cruz 6 1,288 1,294
Lawrence Berkeley 0 7,286 7,286
Lawrence Livermore 0 807 807
Los Alamos 0 0 0
Other - UC 0 2,415 2,415
Other-Network UC n/a 15,934 15,934
_______ ______ _____
15,225 65,907 81,132
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.0
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) 8:40
Average session length (minutes:seconds) 13:50
Longest session recorded (minutes:seconds) 643:18
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 358.2
Retrievals per search - standard deviation 4806.2
Percent of searches completed with 0 results 29.6%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 73.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,080 32.4%
DISPLAY (excluding automatic displays) 11,040 35.5%
BROWSE 8 0.0%
SELECT 0 0.0%
HELP 190 0.6%
EXPLAIN 343 1.1%
SET/RESET 3,108 10.0%
SHOW 74 0.2%
ADD ON (AND, OR, AND NOT) 688 2.2%
LOGON or LOGOFF 4,143 13.3%
COMMENT 0 0.0%
SAVE 191 0.6%
USE 7 0.0%
OTHER 1,227 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 4,904 44.1% 1,240 25.3% 14 74.3 358.6
TITLE WORD 2,022 18.2% 984 48.7% 6 405.3 7658.6
EXACT TITLE 84 0.8% 55 65.5% 1 5.4 12.2
JOURNAL 293 2.6% 127 43.3% 34 2958.0 13472.0
EXACT JOURNAL 161 1.4% 88 54.7% 132 2921.4 10987.0
SUBJECT 298 2.7% 86 28.9% 21 1623.5 10565.6
EXACT SUBJECT 32 0.3% 11 34.4% 13 965.4 2881.2
THESAURUS 3 0.0% 0 0.0% 492 330.0 280.6
EXACT THESAURUS 5 0.0% 1 20.0% 16,363 12613.8 7498.5
KEYWORD 2,059 18.5% 409 19.9% 23 1092.3 8340.5
SUBFILE 3 0.0% 1 33.3% 30 30.0 19.8
FORM 74 0.7% 23 31.1% 18 184.0 694.3
DATE 345 3.1% 124 35.9% 21 135.4 264.6
ADDED 3 0.0% 1 33.3% 2 1.5 0.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 83 0.7% 13 15.7% 19 1038.6 5759.1
CONFERENCE 238 2.1% 124 52.1% 160 537.4 1309.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 41 0.4% 27 65.9% 19 20.9 18.6
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 385 3.5% 58 15.1% 5 75.2 500.7
EXACT PE 87 0.8% 7 8.0% 3 16.1 44.7
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 11 0.1% 1 9.1% 58 74.1 64.0
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 1,154 11.6% 440 38.1% 7 107.0 700.0
Single 8,803 88.4% 2,494 28.3% 16 580.6 6217.7
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 8 100% 1 12.5% 1 6.4 10.2
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 83.1%
LONG 3.2%
TAGS 0.4%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.0%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 43.2%
2. First word of command is invalid 28.9%
3. FIND command with invalid index name 6.1%
4. Max. # of ports to a Z39 db are in use 4.4%
5. DISPLAY command contains invalid word 2.9%
6. Search term missing from search command 1.3%
7. Valid command at an inappropriate time 1.2%
8. PS command - no previous screen 1.2%
9. NS of SHOW/EXP command-no next screen 1.1%
10. DISPLAY command - no FIND results 1.0%
11. All others 8.7%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.0%
2. INSPEC DATABASES 13.4%
3. GUIDE (INSPEC DBS) 12.2%
4. DATABASES 6.7%
5. INSPEC BACKFILES 5.5%
6. MAIL 5.2%
7. LOCATE (INS/PSY DBS) 5.2%
8. INDEXES (INSPEC DBS) 4.7%
9. DISPLAY (INS/PSY DBS) 4.4%
10. 1752 3.5%
11. All others 25.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.5%
2. First word of command is invalid 14.1%
3. DISPLAY command - middle of >1 screen 6.9%
4. DISPLAY command - last of >1 screen 6.9%
5. FIND command with invalid index name 6.2%
6. DISPLAY command-first of >1 screen 6.2%
7. NS command - no next screen 5.4%
8. FIND command with zero results 4.1%
9. DISPLAY command-complete in one screen 4.1%
10. FIND command retrieves >1 book 3.9%
11. All others 21.6%
Ten most frequent SHOW requests:
1. HISTORY 71.8%
2. SEARCH 11.3%
3. MAIL STATUS 7.0%
4. SETTINGS (INS/PSY DBS) 4.2%
5. MAIL SETTINGS 2.8%
6. INSPEC LOADING STATISTICS 1.4%
7. GLOSSARY 1.4%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)