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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
$ P4 F' G+ Q7 A  dto do-business . u4 p; Z' R3 I
rt random 360
, [5 N1 t, S9 s# I6 T' v% I; l fd 1
8 j3 {, O* E3 K ifelse(other turtles-here != nobody)[5 |) U" y( R5 U9 Z: ^
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
" n% r. O! y5 K4 S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; j5 i7 h% r# x; m. V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 N& p# ~/ E9 G0 m5 ?- y   set [trade-record-one-len] of self length [trade-record-one] of self
4 |2 o) H+ e& ~* ?   set trade-record-current( list (timer) (random money-upper-limit))+ \# M  m, U; O3 D3 \* }0 Q

! i$ L/ @3 X; ?) ^- L8 {& W- Q问题的提示如下:
0 Y) }0 e! W, Q7 w' V5 {. U- W7 O
3 v" {; D/ }; _/ x1 I2 Herror while turtle 50 running OF in procedure DO-BUSINESS6 J3 N/ B8 E+ i& O' t' V5 z+ J
  called by procedure GO: t& {0 C8 A$ z( b7 n. c. \; j$ Z  S4 Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 T/ x+ S2 R# D' c( K" J$ R
(halted running of go)# q6 K/ [7 j6 M- L$ ]# z2 G
  P+ M- C/ ~* U! x$ u4 k
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
9 S6 z% V/ F5 N7 J# u) K另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教$ S1 B% q2 B0 o+ W2 _: S0 Q' ]2 ^
globals[
2 ?  X3 {! W! z" \( K+ B5 Q8 ?xmax
' Z+ X- _# }$ H* m' e9 [+ Hymax
! n# l( ]1 X0 U, wglobal-reputation-list
( \5 m  T3 ]! r4 |4 g$ l% i6 r9 p* U, G' H3 p
;;
每一个turtle的全局声誉都存在此LIST
2 P8 X8 m9 ^2 D, Wcredibility-list* N# g+ G5 D, S& y% t" [
;;
每一个turtle的评价可信度
4 ?4 ~- q! R2 {8 J* uhonest-service6 V2 T$ P- I6 m0 t7 m$ H. A
unhonest-service
1 X  D3 N- Z/ f9 ioscillation& n9 b% C) Z2 l4 ?1 v4 i1 ]
rand-dynamic
  d  a) h% \: t( o7 V' w: D2 c]* G: X" y  T! G# U6 E% |* s# X
2 `4 [  E9 S2 U" n
turtles-own[! y  @. X4 d6 I6 m
trade-record-all+ f* _) l) {/ }
;;a list of lists,
trade-record-one组成3 I$ f7 H: ~' Z4 B& t2 p/ k
trade-record-one0 |5 f9 P# Q8 B/ ]* C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 H4 H* Z$ p* s
4 ^( O6 c- h8 m! z+ A
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]" k% \: x8 {) m4 A# C
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]8 I: E/ I: }/ ?5 p
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list4 j: [; x) h1 o" G' u7 ^
neighbor-total8 F) J& w" d, A$ n
;;
记录该turtle的邻居节点的数目
) s! z& |1 M- h, k# f3 y4 ytrade-time
" |1 l: Q$ d3 e. Y/ z: r& J6 U;;
当前发生交易的turtle的交易时间
: o( o( J' i9 K# wappraise-give
0 u" k- G/ N( \. u& E& S3 z, J;;
当前发生交易时给出的评价8 n4 b1 ^( ^$ J+ q- K- i! g
appraise-receive
- O# D$ E% K: m& p;;
当前发生交易时收到的评价
, |+ D  L* ]2 ?' b9 M. aappraise-time9 W. s6 c! b* ^, F
;;
当前发生交易时的评价时间2 J1 w- u8 \7 L$ L2 S4 R! H, O0 ?3 {
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 x+ d+ }) E: F5 Qtrade-times-total( {1 T& j5 G2 Y/ q# Z
;;
与当前turtle的交易总次数
' [$ o) {4 L0 Y5 ]trade-money-total
8 N7 W2 G; P: A  N;;
与当前turtle的交易总金额3 H  t6 M" B8 F; _. w
local-reputation7 c3 ?5 R2 X! I) ~
global-reputation4 l, Q$ {; g; h: y# G* D# |
credibility
- o% M% Q, A# h# v% J  i9 W7 O;;
评价可信度,每次交易后都需要更新
, W8 F+ @  @5 ?" `6 ]1 h+ }6 scredibility-all
' e4 T3 l6 L5 \4 n2 }4 f;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
% m7 H4 u% I* x' O3 D* q; v3 {3 G/ B+ W( }9 k& |
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5% {$ j4 y3 ~+ X
credibility-one
! P4 b2 c) p0 q+ Q% y" g;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people) W3 h# i- T! S. q0 I8 w8 O* U
global-proportion
6 Q& k5 ^& I! ecustomer8 J7 Q; f# g  l: t7 e
customer-no) ?" u2 o/ v$ p5 ?# i
trust-ok3 V" Q, D; I7 I; v9 O9 [% h  l1 J! g
trade-record-one-len;;trade-record-one的长度
% K' I; O' R+ N- c  B5 A]& L! s  _$ b9 V! u6 V& L
8 l& M+ L! K* E0 M7 N$ {
;;setup procedure
7 @+ u# h7 X$ `- E: @3 q. {
4 G% q1 Q5 i/ r. i& Kto setup
6 c4 y" P% d8 n& q  C" r! z: S& M3 K6 {3 W7 K8 @) I
ca
2 z5 W8 `& t' @- q3 C
& y) b( I6 c% }0 P2 _
initialize-settings

6 W' L/ k* f6 Z' N* h, [5 j$ R9 L0 H
crt people [setup-turtles]
& I/ N! C* g# O- U7 L% J9 a& p: L
$ Y- U0 ~; @4 S# H
reset-timer

2 d3 d* c  r& r( ?0 C; |& L- \2 `$ {+ Z
poll-class
" j+ m5 A9 P! m2 t5 |, |; I; v# Q5 X

% [! ]( f# C+ l! Vsetup-plots
( H3 A( A3 O! [4 t$ {* X$ U( ]
; H. c+ P+ O8 w- T' {
do-plots

$ j4 C5 c* O- c7 r/ b5 send
9 {2 m# D3 @" g* g
0 q) A: [; q8 Z# z+ [+ @to initialize-settings
6 P5 n$ `5 ?& N) u8 f/ j6 \$ v/ m  m
set global-reputation-list []

6 ^; @$ Z# r: _( ]' E) |2 Q) @8 n+ Z% g
set credibility-list n-values people [0.5]

9 `2 S8 C) a) T( J3 |
1 Q: }9 C$ \, ?' fset honest-service 0
  G. L1 Y) G+ M" d5 A. c# r
4 `! [7 u& q, y, W1 A% B1 _
set unhonest-service 0
3 t/ z+ X$ g* b

. |: e0 j3 K  @8 m" Iset oscillation 0
7 {7 R2 w' b: I: Y! s
& y* N6 l! M% V$ r4 Q
set rand-dynamic 0

# M. x! |8 n. [. U& P. H2 Pend, e; U) X1 O* n5 h

1 N  y+ U3 G# g% [1 Xto setup-turtles ! t# u7 D# i3 t) l0 w- g1 c' i. {7 u
set shape "person") p8 O1 ]! f6 c. o/ b
setxy random-xcor random-ycor/ d) A0 \- A; k/ S8 {3 e3 [! t
set trade-record-one []; h) q# P% N- ~
# B! P* d6 j" E$ |: K+ [" B3 N; u
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 J: L" N/ W; a

' [7 B  W1 B2 j5 M" W+ Xset trade-record-current []
3 x; q6 g6 j: u# `; {set credibility-receive []
) O, u/ n1 F. S2 ~- r) s$ Tset local-reputation 0.5
6 p( I' L! }6 I) Sset neighbor-total 0
& d( L; ^5 O; `' Sset trade-times-total 0
, u: H; I- ?6 h2 A% j1 ]( Xset trade-money-total 02 M, s, r3 {! T+ p6 r" s7 b  }6 u
set customer nobody$ i6 }# M; q" t) y8 D% R9 N' x" _
set credibility-all n-values people [creat-credibility]
8 `! J4 T9 ]+ W5 m  e& f7 [set credibility n-values people [-1]5 V3 O' i6 @5 m% F/ C' T
get-color* h  T8 M# j* k: N
8 {* ?& k" E) Y6 E: l
end
% ]" F/ k9 i7 ]0 v& @
5 N/ T( S0 ?. C3 }! Uto-report creat-credibility0 N" z" A; e# V% d
report n-values people [0.5]; f9 e, A0 j- b# E0 G& i
end3 d0 K- o$ w4 n- p/ `* Y

/ |6 }: M1 \$ w5 Gto setup-plots+ N2 L2 }4 ^0 c: P- }3 t
$ G: z$ H8 \1 l1 \4 K/ q! x8 G
set xmax 30
: t- G* [( ]5 U+ n5 y7 u2 C' I

$ d; ]4 G. `  M2 c$ v# n; M& Bset ymax 1.0

0 C' W/ A' J4 C) i. l5 x1 {! H, J) a0 P& w* y
clear-all-plots
5 ~: M# r2 J! A' e3 L+ t' i; R

) \3 b  U: q4 {( d3 c' z# G/ ^setup-plot1

" @9 K, g3 H+ @$ E7 Q/ U0 v) `0 S( Q/ E6 k7 Q7 ~8 k# X
setup-plot2

8 h5 R" e, b- g. {, P  o. Q7 @: i) T, S0 {% r
setup-plot3
5 Y* D1 x; c' c# b% W: q
end  T/ g* d* ^3 n( E7 T1 K3 T% Y

1 V8 o8 y& Y/ X: V: \0 n;;run time procedures1 I( d; c$ [( c. T1 e
! P5 B+ t; O$ A: {9 w% M
to go9 h  R5 [, T  v! c

  _9 W6 d- b% f$ h6 kask turtles [do-business]

. G+ \* W0 r4 ^) _/ Dend
5 [; x) t2 f4 A8 y  E1 h- ^  s* H& w& ~2 w+ z+ j
to do-business - G& u- _4 J, V, v& k/ r/ K& E( B

- e5 ?! K4 _" U
! X+ C$ s# r/ Q+ ^( }6 D' Rrt random 360
/ v$ @* f" i- ]" ?6 _2 y

7 d/ |3 ]5 ~7 P0 w8 T* ifd 1
4 D. V. N( B/ I3 N* d$ H& s- y5 I, Q

9 Y( u/ b& F' @; X9 a6 B5 ~ifelse(other turtles-here != nobody)[

2 D4 H1 d! m" W7 s7 j6 @8 z- `/ t+ g# _: l
set customer one-of other turtles-here

6 L+ ~% @$ N5 U' j2 l; J/ d% ^  X. c2 H# H! k- m
;; set [customer] of customer myself
* ~8 x7 o; m0 H. W5 F

: M" C2 a$ x& Bset [trade-record-one] of self item (([who] of customer) - 1)( l. z3 |( M9 I% y
[trade-record-all]of self# O4 j4 H' Y: M
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ v+ i# ?) e$ z2 Q* u* O

, B5 j$ L/ g  m7 Z; T1 sset [trade-record-one] of customer item (([who] of self) - 1)
) N% Q. ^, P9 C% v; {: \( d8 J[trade-record-all]of customer

9 @7 _2 |, N( }& v4 C4 D: b0 `* P/ j7 u6 \* x( z' n5 W2 ~
set [trade-record-one-len] of self length [trade-record-one] of self
/ Z$ @5 T* s3 j( x

# s: c/ l' t" X; l+ E* l* U& _! ?. [% Zset trade-record-current( list (timer) (random money-upper-limit))

0 O8 Q" e  h. G, t$ Y- ]- S$ ?) N! t: Q' L0 E* k+ m4 z* C
ask self [do-trust]( J0 [( @; h$ J& X$ A3 b6 G0 ~
;;
先求ij的信任度
' n2 ]' t4 k4 i0 A* `3 I3 D3 Q  o
& ^: N) C  V; K# Q: nif ([trust-ok] of self)
& W2 b9 A  u& O, f- @( |;;
根据ij的信任度来决定是否与j进行交易[5 t# S4 J) x" V) I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 c, H1 [" J  ], S* Y& e* Y2 h+ [' \1 k4 k; w1 P: R
[

  G4 E/ C+ o* n9 ^, B9 k) o5 [' ]5 _1 J/ i; {. c' P! B$ |
do-trade

: S2 z1 m  z4 O5 I  w" w6 a/ G3 J
! T. p1 a7 F  M7 |9 t5 yupdate-credibility-ijl
5 _9 f! n' ?, m2 v% v  j
* m# V6 x) J6 L/ n$ Q5 X# s
update-credibility-list
, Q3 o7 a3 F1 O
$ y: E+ b5 J" Y4 P  M- r

: |- r) j% H: G$ L9 I' U3 Jupdate-global-reputation-list
# t4 E$ u" Y$ ]9 T9 B: k
" q, j: E  \2 i9 B+ q- X
poll-class

3 z. Z# |3 L# S; k& @, O& j, }1 E' z8 |- H" g8 [
get-color
0 E6 T* g7 C/ M5 Q' b
5 c" h: D' K1 o; J' u
]]# Y: b) \: ~4 Z* K6 L/ k; Z

+ x1 c9 ?. v& D6 I;;
如果所得的信任度满足条件,则进行交易
# |/ F- ^. K8 w+ u+ z# x( D$ n( H* t, [7 F( S
[

' p+ u8 O. ]& n; G' P2 j
& f3 y- `4 ]  j+ b& {6 j: q1 x2 \- h3 @rt random 360
3 E8 |5 b3 \) @% m/ B

4 M- ~& @0 I3 ]fd 1
& `9 T- L2 r. w; @& J" O; y- F4 F) B

. R6 ?4 l, [' I( h* i1 J6 L]

. N% ^' M# p- o) b/ I$ M
5 a  B! F( P5 y( \+ yend
1 V7 ^. w0 D( ^" Q' D; y  F

* e* l% R- c7 o7 \to do-trust
/ }6 h* v  h( h7 ~% O, b( Lset trust-ok False$ {2 l+ M2 Q6 E2 k* }& {, e

" t( G4 A9 Q- \* s, M, A9 g5 H

. {* [/ j2 C$ q7 Qlet max-trade-times 0
. u* ~; N6 g$ sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: L' _& g+ f- }; u2 F, j
let max-trade-money 0% g3 @# Q' \, a. b  C6 w6 \
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% R9 k2 \0 X- w7 U% l4 V; U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  ^* v* x; G$ k. A; K5 K) }, b9 ]* c! N
9 D6 x( `; d$ G! k& t4 `. D2 H
get-global-proportion
, J3 W* K: X- P9 X$ @. Z' C. \let trust-value, R/ \, r+ [6 c( a' q/ |) r9 x# ~
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 `5 Q. K3 F" _if(trust-value > trade-trust-value)- l) f3 d4 ^- J0 S7 f
[set trust-ok true]
3 L* M$ Q4 p; m5 `2 E! n0 Rend
  q1 [# L3 X' f( g* \2 u9 _6 y* u! F7 G, Q5 S8 s
to get-global-proportion# g! R3 t/ d  v3 w3 P9 y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  ?9 s$ V1 I7 A: w
[set global-proportion 0]  p$ f: A$ {1 S4 m! B; c5 Z# W+ Q
[let i 0; T9 X5 I- _+ W8 ~$ ~/ V
let sum-money 02 F  {' j2 P. P; Z
while[ i < people]
! _- `; j, z2 N6 `( s$ ][: Q+ J6 K7 S9 A% D
if( length (item i. }+ ~" k# ~# d( Y$ I& Q2 h2 C
[trade-record-all] of customer) > 3 )

8 G/ X& [1 ^! n) }3 g( |[" N7 T1 W3 M2 [4 n6 m6 w: z. A" K+ c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 V# G* a2 C4 Z+ y]
* r3 s2 [( V9 g9 _$ O: `; S]
3 _) g8 Y9 o$ ~9 Z5 X9 olet j 00 t8 x! x6 }* G
let note 0
( X3 G- [; j8 I0 ewhile[ j < people]4 d+ Y  O0 C8 q" k8 x
[
: n  F5 b5 d4 J# Aif( length (item i
& D7 `! E3 `& J9 ][trade-record-all] of customer) > 3 )

) q! ?9 M/ F0 R& ?0 W2 Y: @[
& X$ N6 v1 u' c( oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 m% y4 J- L+ k9 O$ n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 L, e& G8 N3 |  o# Q" b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) c& N4 B: [8 L) P* h
]( g/ R* _9 G& J. r% l5 |) Y
]5 D2 x% L: U. \  P/ b9 I
set global-proportion note+ f% G) F; j1 c0 m8 L1 h* V9 S3 G
]3 Y; A* Q4 r" s$ g; V
end
) B' O  \5 {! D
. J$ F- A- z3 _. R4 H! ]2 B# Yto do-trade; y# u. a. F: Y+ T# r& b9 H+ X* y
;;
这个过程实际上是给双方作出评价的过程, L" z4 {8 k1 t; m0 d/ ]! Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 _- X& O2 o9 k* |1 H+ E$ S6 k* gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 h5 Q. e! E; {/ }
set trade-record-current lput(timer) trade-record-current
  C! L+ _! J0 _  j;;
评价时间; R+ u( g! |, m. y
ask myself [
% A9 i2 [; L8 M! p/ a; nupdate-local-reputation3 u9 \' J+ Z8 I, Z% _
set trade-record-current lput([local-reputation] of myself) trade-record-current: K) q! P( }+ ?
]. L! N/ v9 R. b' t& W$ ?) C, W9 o! e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 I1 F  T& @! P+ `' X" a;;
将此次交易的记录加入到trade-record-one
: d+ O' v+ H$ G$ j7 |* zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& B8 }) W$ q% Q- _let note (item 2 trade-record-current )/ W+ ?; `( _; O. k9 f
set trade-record-current" V/ ^$ M! h1 V
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 ?% |1 R" ^+ _! s6 Y, A
set trade-record-current
$ L8 x9 W; {" n- [  c$ m6 J2 W/ j(replace-item 3 trade-record-current note)1 m) C( |" E4 r3 w% l: R1 P
! ?* m/ P; ^& {0 r! X0 K

3 g& b3 ]4 {7 {4 F# y$ w) Hask customer [' o) [4 z; i' f/ @+ e  Q8 n
update-local-reputation$ c/ S9 [' \! o$ F
set trade-record-current
. V6 w  K' y% }6 R/ F/ Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- o6 ~1 t2 @6 V% [3 ]. r
]6 e9 ^8 S% l- T

) ]0 ]; g5 s; R4 J6 `6 c; }
; \6 F. [) g  Z1 b& G. X2 v6 g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 ~! h/ m8 [% |9 j+ T4 E
" R- }4 D( A1 s7 M3 _1 `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 ~. ]# t; |0 V, d1 Q;;
将此次交易的记录加入到customertrade-record-all
' j7 c* J1 `2 k* }! }7 E$ mend
  ]$ M7 a) {$ @# S1 c- g8 Q
+ a' Y" L$ }% ^! M6 Dto update-local-reputation
8 U1 u9 {! r1 N; Z' P: t. Sset [trade-record-one-len] of myself length [trade-record-one] of myself
8 ]% u4 j& _5 _! X
4 [. o$ k4 j$ I3 F6 l7 U$ h3 W5 c' Z1 T  p, Q* R2 I8 ^9 @
;;if [trade-record-one-len] of myself > 3

9 K0 |) D! }. Y8 p- ]# vupdate-neighbor-total
7 k2 @8 f: N! ]; F( H% d;;
更新邻居节点的数目,在此进行
1 {4 u! W: K& s4 L* {/ r3 Blet i 3
# @% \( F% u7 K1 llet sum-time 0( x0 h* c% O4 n5 @5 F
while[i < [trade-record-one-len] of myself]  ]' y: E# Y' a+ ^- N# c
[$ C0 a6 r1 x! y, S* U/ I/ Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 {! n" E9 v$ p0 Qset i
$ e" L# [' v1 m" _5 @' i( i + 1)
6 y2 V- ?9 d2 _" v6 X6 t1 y
]
1 l/ j2 n, B: C9 o, jlet j 3% A; `7 n5 p* t4 R
let sum-money 0
5 P& ^- L) w; _$ u8 twhile[j < [trade-record-one-len] of myself]1 s' G! U) @; U3 `1 I. C, V7 t
[
. T+ z; I3 Q% z: dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 r  x# k9 A- eset j
$ b7 S, I+ d0 ^' m. P, Q( j + 1)
) v& L$ d% t% H5 r/ B' }
]* [- z5 `" \8 S6 e" G; A3 F5 I- q
let k 3
' N$ M& W! ^8 w2 H5 ]. z, ilet power 0
( ?' w8 Y& o( v/ K2 _let local 0
+ p- N3 R  L, pwhile [k <[trade-record-one-len] of myself]
  J+ R, Y8 S- f; L% l- Z[
4 E' P$ q; g6 a- z& j3 yset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 6 E* F5 m7 f% H
set k (k + 1)' y" O: B" _7 J; O6 g! a9 C* [
]* J# g8 a% |( f9 y
set [local-reputation] of myself (local)0 J0 P1 g' y( f
end
; h: z% J4 r9 j0 `& ]1 x2 L- Z1 ?3 ]! A& S: [2 G8 Z3 K' w
to update-neighbor-total
" m' W* P& o5 h0 Q; z" p7 v6 e7 f& g+ E
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) ]- n, d2 R1 ]$ x* b1 p3 l
, k. r* f0 h- [! x0 _& g
9 D2 d8 [. l0 F$ b
end& J! M3 k# z7 ^7 D$ V; I

  V% e" d' p% s9 Bto update-credibility-ijl 4 W& G* Y7 Z$ A3 M, P( `
2 v; Y5 m$ O+ a
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。" s* K, W, r1 v
let l 0
& w: ~2 D4 v9 K1 ?' l! lwhile[ l < people ]
( j; @& j! {6 C5 K* w1 n! b' U;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价: I8 }( q  a. P
[
+ Q" y# o" `7 n: a) glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) }- t- r3 z; ~0 }if (trade-record-one-j-l-len > 3)! S3 V' l/ E% L: F$ z
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one7 K- R$ F3 z2 C; O6 \
let i 39 u7 {. O0 v, Y: p5 p5 ^$ c4 R
let sum-time 0; n' T* @* m5 A( ^. t' {
while[i < trade-record-one-len]$ [  H. C( ?9 b2 T( O5 f
[% J) u9 n( Y8 I8 x/ a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 X( X; x  k( Z: u4 wset i
2 o1 Q! C8 T" \+ z# K( C( i + 1)

" H1 o$ R1 A7 e6 ~]
* d; z( `- c% G; Elet credibility-i-j-l 0
, m# q) Q, ]" _) r4 X2 |; O/ \) y;;i
评价(jjl的评价)( K- F* u6 x6 g& B% L7 m$ R
let j 34 w2 L2 z2 g. v, ^  N
let k 4
# j* n- f2 h- s8 l- vwhile[j < trade-record-one-len]
8 v* {+ M8 l. X! }9 Z; m[% u+ x. h9 P4 P- R
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉4 E8 G( o) V5 [; [+ y# Z& z; g
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
2 {+ O- F% O9 r9 B* P( m- nset j% b3 Y; N( |" E- A& n- h0 x" ~
( j + 1)

! \6 j3 `2 N: c]
  }8 U& z6 v$ ^set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))* ~: ^! q6 l* ]2 D! {, o, }% K0 ]

  w& c: ^2 T6 ~4 _! B' I/ k& V- V

% O0 M& p) y" _' glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! O; U3 ?7 p% G;;
及时更新il的评价质量的评价
3 p. z0 ]$ A  x& `' w% K9 vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# x0 {; ?  ~, {7 E+ Gset l (l + 1)& c2 n9 B9 B  J$ i; }2 Z
]2 g  D# X! v* ~/ S, _' l7 U
end4 r- Q" s# F, p$ O
4 K4 ?* s! r$ `) E) I4 C3 k% A' M
to update-credibility-list- J& r3 S$ L" m$ h, o4 a( ?
let i 0
! K& N! A2 N) dwhile[i < people]4 u  w  c) b9 g" t6 Q' |8 Z& p0 h, ]
[
0 t  r* q0 R  B7 V8 k2 _let j 0
' X8 y( ^$ Q( Y. I; j/ v/ Y2 r0 M) Flet note 0
6 L9 S2 d- L$ K3 f, \, {let k 0+ H1 C/ q# A6 y! c8 ~1 ~
;;
计作出过评价的邻居节点的数目$ R% O9 h2 o. L1 I4 g! {- M, @
while[j < people]( k8 U. i* J  n! q$ ?! k
[# }' L+ h+ X1 U; ~+ ^" y
if (item j( [credibility] of turtle (i + 1)) != -1)- a' ?/ r- x9 V1 Q5 \4 J6 }
;;
判断是否给本turtle的评价质量做出过评价的节点7 f+ x+ t( x' Z( A8 p0 _' {4 x. `8 a
[set note (note + item j ([credibility]of turtle (i + 1)))( A% J& m; d: w1 M1 f
;;*(exp (-(people - 2)))/(people - 2))]

: Y0 v% s1 H' U. ~6 \6 I: zset k (k + 1)8 ?6 F. I( Q" ]1 i% s" Y
]# G/ b# L  z' ~; j% a6 m) M1 @
set j (j + 1)
0 N+ C6 @( y2 ?0 f]
# P+ ], ~4 p) v+ t8 s2 Q7 n$ n7 ^( Dset note (note *(exp (- (1 / k)))/ k)
% }3 A# H8 u3 j7 ?set credibility-list (replace-item i credibility-list note)7 E+ C# R2 X' n4 \1 M/ C1 m$ o- ^
set i (i + 1)
9 ?* x& v1 U. t( L]/ |5 k# ?. A7 U- G
end
8 Q8 r- N9 ^4 d  b0 k$ u! b' R6 a, [( U: u" T
to update-global-reputation-list( L+ n2 K1 S5 l8 W! E! P; G
let j 0/ G3 L. X5 w0 a$ D& g
while[j < people]
% J0 [8 Y; a8 t0 L& Z* C# @[5 g% c0 B9 T( r
let new 0
4 @% T3 o! \% [;;
暂存新的一个全局声誉9 q* [, C  B: i* |6 s: o
let i 0' [4 u  ]! i& `* ~( W" O
let sum-money 08 Q/ {' t5 G$ b; c0 W
let credibility-money 0/ F; J6 P- w% f1 r
while [i < people]
9 Q& ?9 H$ D* L$ @9 u) O[+ `0 v/ i) _' v/ X$ _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 |- I! _+ Z" k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 r* ]' _% a# [% X# S: f; _3 _% n& J
set i (i + 1)
  M1 ]+ t/ H- p* a3 m]
7 r9 _& J; Y* U0 @' S9 S! I; H7 Xlet k 0& h: z: I+ g# ~4 P3 L8 o2 @% A% o
let new1 0
% a: C5 b8 M9 ^0 J3 m& A; i) M' S% hwhile [k < people]/ K7 N8 s. c; j9 A$ a8 Y0 P
[
: A" O5 M0 i# T. wset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)$ x+ e# `$ Y  G  d# Z) w- Q* e, U0 I
set k (k + 1)
* |* f3 B1 q- `& v]
9 R) k7 z; @) b) S. l) _" mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. l4 Q  J  i( Wset global-reputation-list (replace-item j global-reputation-list new)
# t) b9 q0 u. oset j (j + 1)
1 ?/ Z% g% g0 J]
; w- P% g; \% v$ Vend
' p$ U, Y, l9 G7 {  x7 h1 `
% S: y& Y- o& R9 T7 ?0 B6 i, f
) s0 l2 Z/ a# P8 x  i5 E! x/ ~
to get-color
3 a1 c- z7 Y1 p6 j% O! p# A7 g
( a2 A; l% r7 g# t3 ~set color blue

3 e+ S' @$ l% T3 \2 J- }: jend
1 |. S0 }. J% a- `3 r' U' x( p
* H) {% h% E( H2 E; Dto poll-class, L% ^+ _: e( ]6 c: {+ w, H' P
end
- ]) E/ F& l* @. R, f* H
% k0 [" ?0 Y  d) q# c- y% M; yto setup-plot18 A5 h0 n( V- a* {

1 o4 T1 I9 ~0 v: u0 ~+ m5 b6 Lset-current-plot "Trends-of-Local-reputation"
( K1 O: x6 S( I: n6 l5 e

* g6 w* t5 U5 J" e. Z! pset-plot-x-range 0 xmax
- I0 ~" G* V! w3 S7 I2 M  E; Y! Q2 M

6 h5 A, f6 R* W5 a* U: {% Qset-plot-y-range 0.0 ymax

: C% Z, j3 q. A7 x; Y; j& r% lend
; L. p7 u' l( h/ `, k. `9 z
0 Z; g  S# w* {' V% k0 O) z6 Vto setup-plot2& {4 ?. u( b2 l2 i" o/ L

. V% S0 |1 q2 c* D  J, eset-current-plot "Trends-of-global-reputation"

& f" \- G* l. R7 U2 y# w7 d' S& _3 M
set-plot-x-range 0 xmax
4 ~: m$ ^! t2 [( {7 |3 N
& J8 E' D% n0 \% |! i! e
set-plot-y-range 0.0 ymax
9 q: r( r" E& k! _. I
end3 v; z5 i. m6 U! K' ?# K. J
, V' c" L4 R6 y& U$ a5 F" Q3 I+ h
to setup-plot3, g  U& n0 o5 L" y/ S! y( h

3 k+ f$ L0 B$ h0 u: Xset-current-plot "Trends-of-credibility"
) \8 C$ }7 u# z9 @4 Q7 q. f
) `2 i9 s, L% j+ Q% k: W0 _' s7 L* n
set-plot-x-range 0 xmax

/ n  H% g0 m; g# W' H: I- ?. G2 B" @7 i# {+ ]3 F
set-plot-y-range 0.0 ymax

+ P. d6 x% J9 F1 m" T* V5 ^" J; }end; U% p$ s/ I  P/ [8 ]
2 p, \( L; ~6 e" d
to do-plots
3 X5 g# n9 ]' I, C9 q8 Eset-current-plot "Trends-of-Local-reputation"
% U+ u% ^- ]" n- Nset-current-plot-pen "Honest service"; [/ T* P% g: g: m+ G  r  ~
end# }- l- _  W" C4 \8 K2 P% \$ E
) L- l( Y. F  U
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.% F6 A+ i0 W% |1 c- `! N" u

. c: T9 T  k! m这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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