MELVYL ABI DATABASE 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 21 198 219
Davis 67 2 69
Irvine 67 0 67
Los Angeles 0 96 96
Riverside 15 4 19
San Diego 7 46 53
San Francisco 15 0 15
Santa Barbara 6 3 9
Santa Cruz 4 3 7
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 33 4 37
Other-Network UC n/a 208 208
_______ ______ _____
235 570 805
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 19 65 707
2-4 a.m. 8 27 205
4-6 a.m. 3 21 169
6-8 a.m. 17 44 313
8-10 a.m. 97 306 2,737
10-12 a.m. 162 482 4,815
12-2 p.m. 136 380 4,206
2-4 p.m. 167 520 6,533
4-6 p.m. 116 363 5,052
6-8 p.m. 38 89 955
8-10 p.m. 18 64 1,148
10-12 p.m. 24 58 568
__________ __________ __________ _________________
Total: 805 2,419 27,408
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 117 667 784
Davis 174 5 179
Irvine 190 0 190
Los Angeles 0 265 265
Riverside 36 20 56
San Diego 12 179 191
San Francisco 48 0 48
Santa Barbara 19 9 28
Santa Cruz 15 3 18
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 18 18
Los Alamos 0 0 0
Other - UC 81 9 90
Other-Network UC n/a 552 552
_______ ______ _____
692 1,727 2,419
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 935 11,284 12,219
Davis 1,578 542 2,120
Irvine 1,178 0 1,178
Los Angeles 0 3,827 3,827
Riverside 134 423 557
San Diego 135 2,169 2,304
San Francisco 448 0 448
Santa Barbara 18 49 67
Santa Cruz 341 4 345
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 204 204
Los Alamos 0 0 0
Other - UC 258 77 335
Other-Network UC n/a 3,804 3,804
_______ ______ _____
5,025 22,383 27,408
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 0.8
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 ABI Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:13
Average session length (minutes:seconds) 13:21
Longest session recorded (minutes:seconds) 150:25
Average number of searches completed per session 3.0
Retrievals per search - median 6.0
Retrievals per search - average 734.6
Retrievals per search - standard deviation 4636.7
Percent of searches completed with 0 results 26.3%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 58.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,185 28.7%
DISPLAY (excluding automatic displays) 3,203 42.1%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 81 1.1%
EXPLAIN 92 1.2%
SET/RESET 392 5.2%
SHOW 28 0.4%
ADD ON (AND, OR, AND NOT) 234 3.1%
LOGON or LOGOFF 951 12.5%
COMMENT 0 0.0%
SAVE 233 3.1%
USE 3 0.0%
OTHER 205 2.7%
2.1 Article Text
_________________
DISPLAY TEXT commands 401
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 40
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 0
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 621 26.4% 151 24.3% 10 96.8 707.7
TITLE WORD 485 20.6% 181 37.3% 7 124.6 1045.9
EXACT TITLE 52 2.2% 22 42.3% 1 5.9 12.5
JOURNAL 89 3.8% 41 46.1% 164 4959.6 11264.7
EXACT JOURNAL 109 4.6% 33 30.3% 338 1953.5 3853.7
SUBJECT 122 5.2% 59 48.4% 519 5393.5 16139.5
EXACT SUBJECT 2 0.1% 1 50.0% 150 150.0 0.0
KEYWORD 595 25.3% 102 17.1% 51 1406.2 6514.2
PUB TYPE 8 0.3% 0 0.0% 188 885.0 2024.0
DATE 69 2.9% 19 27.5% 33 335.6 1378.3
ADDED 5 0.2% 0 0.0% 18,305 16072.8 7667.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 1 0.0% 0 0.0% 76 76.0 0.0
COMPANY NAME 43 1.8% 10 23.3% 81 637.1 2942.0
EX COMPANY NAME 0 0.0% 0 0.0% 0 0.0 0.0
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 0 0.0% 105 104.5 143.5
PERIODICAL 85 3.6% 7 8.2% 4 201.4 1183.8
EXACT PE 47 2.0% 0 0.0% 3 11.1 17.0
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 15 0.6% 4 26.7% 9,445 8693.0 8434.1
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 182 8.4% 56 30.8% 5 360.9 1542.1
Single 1,985 91.6% 517 26.0% 22 1123.8 5842.9
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:
SUBJECT 2 100% 0 0.0% 1 1.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 86.8%
LONG 0.7%
TAGS 0.0%
FIELDS 2.4%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. NS command - no next screen 36.2%
2. First word of command is invalid 29.5%
3. PS command - no previous screen 6.2%
4. FIND command with invalid index name 6.2%
5. DISPLAY command contains invalid word 3.8%
6. Valid command at an inappropriate time 2.5%
7. Search term missing from search command 1.9%
8. DISPLAY command - no FIND results 1.8%
9. Add-on search, no index name after verb 0.8%
10. Max. # of ports to a Z39 db are in use 0.7%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 15.2%
2. FIND (ABI DB) 12.0%
3. COMMANDS (ABI/PSY DBS) 8.7%
4. INDEXES (ABI DB) 7.6%
5. B034 7.6%
6. ABI/INFORM DB 6.5%
7. Unrecognized term 6.5%
8. DISPLAY (ABI DB) 4.3%
9. B042 3.3%
10. DATE (ABI DB) 3.3%
11. All others 25.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.9%
2. First word of command is invalid 11.6%
3. FIND command with zero results 9.8%
4. FIND command with invalid index name 8.7%
5. DISPLAY command - middle of >1 screen 8.1%
6. DISPLAY command-first of >1 screen 4.6%
7. DISPLAY command - last of >1 screen 4.0%
8. NS command - no next screen 3.5%
9. FIND command retrieves >1 book 3.5%
10. NS of SHOW/EXP command-no next screen 3.5%
11. All others 17.9%
Ten most frequent SHOW requests:
1. HISTORY 56.0%
2. ABI NEWS 16.0%
3. MAIL SETTINGS 12.0%
4. SETTINGS (ABI DB) 4.0%
5. SYSTEM NEWS 4.0%
6. SYSTEM4 NEWS 4.0%
7. SEARCH 4.0%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)