MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 08/01/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 29 1,277 1,306
Davis 264 9 273
Irvine 324 0 324
Los Angeles 0 677 677
Riverside 13 44 57
San Diego 214 465 679
San Francisco 55 0 55
Santa Barbara 6 166 172
Santa Cruz 27 176 203
Lawrence Berkeley 0 214 214
Lawrence Livermore 0 126 126
Los Alamos 0 0 0
Other - UC 0 176 176
Other-Network UC n/a 1,969 1,969
_______ ______ _____
932 5,299 6,231
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,811 8,716 64,833
INS90 853 1,581 7,351
INS85 640 1,169 5,656
INS80 478 859 3,326
INS69 449 1,006 6,015
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 133 352 2,942
2-4 a.m. 104 330 2,207
4-6 a.m. 78 208 1,061
6-8 a.m. 214 480 2,430
8-10 a.m. 706 1,498 7,729
10-12 a.m. 1,244 2,482 15,017
12-2 p.m. 1,017 2,141 17,533
2-4 p.m. 1,151 2,456 16,413
4-6 p.m. 802 1,621 11,650
6-8 p.m. 396 841 4,954
8-10 p.m. 207 510 2,737
10-12 p.m. 179 412 2,508
__________ __________ __________ _________________
Total: 6,231 13,331 87,181
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 55 2,977 3,032
Davis 711 21 732
Irvine 772 0 772
Los Angeles 0 1,551 1,551
Riverside 24 92 116
San Diego 497 1,009 1,506
San Francisco 175 0 175
Santa Barbara 13 324 337
Santa Cruz 56 344 400
Lawrence Berkeley 0 478 478
Lawrence Livermore 0 369 369
Los Alamos 0 0 0
Other - UC 0 411 411
Other-Network UC n/a 3,452 3,452
_______ ______ _____
2,303 11,028 13,331
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 291 24,206 24,497
Davis 5,080 40 5,120
Irvine 7,786 0 7,786
Los Angeles 0 9,502 9,502
Riverside 121 586 707
San Diego 1,761 8,014 9,775
San Francisco 668 0 668
Santa Barbara 33 2,984 3,017
Santa Cruz 414 2,700 3,114
Lawrence Berkeley 0 4,037 4,037
Lawrence Livermore 0 2,556 2,556
Los Alamos 0 0 0
Other - UC 0 2,754 2,754
Other-Network UC n/a 13,648 13,648
_______ ______ _____
16,154 71,027 87,181
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 5.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:13
Average session length (minutes:seconds) 13:11
Longest session recorded (minutes:seconds) 1118
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 1201.8
Retrievals per search - standard deviation 20707
Percent of searches completed with 0 results 29.3%
Percent of searches entered that are long 6.0%
Percent of long searches completed
(includes partial results) 80.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,045 32.0%
DISPLAY (excluding automatic displays) 12,828 34.1%
BROWSE 5 0.0%
SELECT 0 0.0%
HELP 219 0.6%
EXPLAIN 375 1.0%
SET/RESET 3,820 10.2%
SHOW 94 0.2%
ADD ON (AND, OR, AND NOT) 1,286 3.4%
LOGON or LOGOFF 5,104 13.6%
COMMENT 0 0.0%
SAVE 420 1.1%
USE 9 0.0%
OTHER 1,415 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 5,950 43.9% 1,543 25.9% 15 115.0 676.8
TITLE WORD 3,240 23.9% 1,489 46.0% 3 94.9 1070.4
EXACT TITLE 148 1.1% 99 66.9% 2 13.4 58.4
JOURNAL 383 2.8% 160 41.8% 22 1942.7 7817.2
EXACT JOURNAL 122 0.9% 73 59.8% 353 2966.7 5567.3
SUBJECT 348 2.6% 90 25.9% 16 802.6 4088.2
EXACT SUBJECT 21 0.2% 5 23.8% 5 4208.2 7520.3
THESAURUS 24 0.2% 6 25.0% 31 2800.7 5126.6
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 2,051 15.1% 331 16.1% 33 4612.3 41133.2
SUBFILE 22 0.2% 0 0.0% 21 55.1 100.5
FORM 50 0.4% 2 4.0% 23 266.7 893.1
DATE 269 2.0% 53 19.7% 14 160.2 1214.8
ADDED 48 0.4% 30 62.5% 17 16.4 9.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 207 1.5% 53 25.6% 14 594.1 2646.6
CONFERENCE 59 0.4% 21 35.6% 368 2107.3 5294.8
LANGUAGE 1 0.0% 0 0.0% 78 78.0 0.0
CHEMICAL NAME 62 0.5% 19 30.6% 3,880 3208.4 3168.4
ISSN 6 0.0% 4 66.7% 218 218.0 125.9
ISBN 5 0.0% 3 60.0% 175 174.5 164.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 473 3.5% 83 17.5% 5 34.9 167.3
EXACT PE 61 0.4% 3 4.9% 4 34.5 164.7
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 10 0.1% 1 10.0% 15 242.6 413.2
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 1,598 13.4% 578 36.2% 6 166.9 1479.4
Single 10,311 86.6% 2,899 28.1% 16 1287.4 19979.8
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 5 100% 1 20.0% 9 8.5 5.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.9%
SHORT 81.7%
LONG 2.4%
TAGS 0.1%
FIELDS 5.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 42.9%
2. First word of command is invalid 27.5%
3. FIND command with invalid index name 5.9%
4. Max. # of ports to a Z39 db are in use 4.0%
5. DISPLAY command contains invalid word 2.8%
6. Search term missing from search command 1.8%
7. PS command - no previous screen 1.5%
8. Valid command at an inappropriate time 1.4%
9. DISPLAY command - no FIND results 1.2%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.6%
2. INSPEC DATABASES 12.5%
3. GUIDE (INSPEC DBS) 8.5%
4. INDEXES (INSPEC DBS) 7.2%
5. INSPEC BACKFILES 6.4%
6. DATABASES 4.8%
7. DISPLAY (INS/PSY DBS) 4.0%
8. LOCATE (INS/PSY DBS) 3.7%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.7%
10. Unrecognized term 3.7%
11. All others 31.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.9%
2. First word of command is invalid 11.1%
3. FIND command with zero results 9.1%
4. DISPLAY command - middle of >1 screen 6.9%
5. FIND command with invalid index name 5.7%
6. NS command - no next screen 4.4%
7. FIND command retrieves >1 book 4.4%
8. NS of SHOW/EXP command-no next screen 3.7%
9. DISPLAY command-first of >1 screen 3.2%
10. DISPLAY command-complete in one screen 3.0%
11. All others 23.6%
Ten most frequent SHOW requests:
1. HISTORY 60.2%
2. MAIL STATUS 20.5%
3. INSPEC NEWS 9.1%
4. INSPEC LOADING STATISTICS 4.5%
5. SETTINGS (INS/PSY DBS) 3.4%
6. SEARCH 1.1%
11. All others 1.1%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)