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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:3 E4 D( U6 q: J' O
to do-business - S, P, t8 d  J# o9 d/ l& a6 {
rt random 360* J1 Q! o! G/ K& E8 i
fd 11 V0 ~, J% `4 A
ifelse(other turtles-here != nobody)[
+ F/ f& o# Z( S2 {4 Y8 g   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.
" I5 y! n' k7 D. {# f* `   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, t% i9 b1 H; K+ y# r: }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 m/ ~! ~- d& g$ Y+ R2 B" A. }
   set [trade-record-one-len] of self length [trade-record-one] of self
( n; U& o( ~$ {2 ?   set trade-record-current( list (timer) (random money-upper-limit))
( X* G" q1 m: z4 N- M) K% z. n9 R" S" `' i$ [& z( P6 U) q
问题的提示如下:6 Z/ J7 @* _. w! N' q5 y
8 f. m# i5 o+ Z; X1 I/ `& ~
error while turtle 50 running OF in procedure DO-BUSINESS
& J  T- r) A3 m/ L3 J% k$ c  A  called by procedure GO. ?* S# n4 }/ J0 \( x6 I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
# b- H3 R- |) |3 F0 ?: n
(halted running of go)
4 r. }/ m% @( O! H- P6 X& L. u: s& @
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~~
; L8 g+ j. V, G0 C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
) V/ K3 B. S8 k% j8 e* Z, wglobals[
. c- p8 `; ^: o8 O' V$ M& Qxmax
9 h' k* v% M. @; E) Symax  A6 f6 l. [8 ^6 A! x: w' ]0 M6 j
global-reputation-list( e2 n7 g1 g( p0 ^

; u) D: f- F' v8 D# Y, A;;
每一个turtle的全局声誉都存在此LIST& F& N; [" m3 t' R, B" Q: M6 \
credibility-list
7 [9 I) k" X, d" f3 a;;
每一个turtle的评价可信度- h* A8 h/ @+ @0 v
honest-service# L3 R+ e: J! w4 U( H! U1 [
unhonest-service
5 V: s  f% z" `9 u) P3 t; {0 L9 coscillation
4 U" Y# R2 }. v4 s2 n. erand-dynamic
+ S$ F+ L5 _+ ?]: d, U7 U5 O! ~+ o% @

* U9 a4 v+ S3 L" k# w* y) v; Bturtles-own[
* r$ A" l" X" J. h: h& Qtrade-record-all; E) L. ]% ~+ I, A4 s- N$ V
;;a list of lists,
trade-record-one组成" z) ^: |8 p! Z2 o, P) s
trade-record-one* |8 c3 E0 c3 d. X4 Y) W' V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 ?$ l8 c) T' k) F+ O3 e

; b1 |; o% b% O;;[
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]]+ Y  v% p- h( v6 E, O3 Q
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]
7 e  _/ S! A. |; U- r, S& Acredibility-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list
$ u2 g6 y* v6 p0 g  x/ l( [4 {9 ~neighbor-total# |8 P' ^9 N8 C3 M2 y% \6 }
;;
记录该turtle的邻居节点的数目; {3 N2 i, d/ |  l) e2 X5 ]4 Q
trade-time  A5 N% \1 w5 ], w; E6 k
;;
当前发生交易的turtle的交易时间" y/ N7 B, J) R8 i# [
appraise-give
+ a  p- {: W+ d# n;;
当前发生交易时给出的评价
, q0 l# i- m, `  X7 [4 nappraise-receive+ F5 Z: l) K" }* l4 |: y' G: `( u
;;
当前发生交易时收到的评价
' [1 Z, I$ ^9 Z, F) yappraise-time- V* r5 H1 `3 \3 V* ]( H
;;
当前发生交易时的评价时间* t( |; V6 y: m. ?" j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: M6 N8 E9 j& [, O' r
trade-times-total2 ]. |8 H- n& ^( }$ ]* r9 l
;;
与当前turtle的交易总次数
; z) c# N% X' X/ y& T0 `# a# ^trade-money-total
- H3 k! I  h- g7 o$ K. _;;
与当前turtle的交易总金额% p& j. h2 Y6 [& k+ U
local-reputation
4 |9 Q/ E8 J$ R3 x) n3 ]/ z2 qglobal-reputation$ R! l+ h1 w3 ?" k! Y
credibility
; @: `- v! j  a  i5 \& f7 r  W" a) j;;
评价可信度,每次交易后都需要更新
! k/ [: E5 Z: W3 |- tcredibility-all; X2 B; Q) ~% F' s* T- B  K$ \- _
;;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
& x  W# O+ @" M" l+ x2 i$ b8 q6 Z/ z6 X- N! g) M( v
;;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
0 N9 o8 X; H8 r9 Y2 z/ ]. Bcredibility-one2 m! h% Y' G( q( N' t) ^
;;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
, A# Y& r; k9 U6 b2 \  cglobal-proportion
6 a: O; n6 n7 Q& Mcustomer5 |7 m2 W/ ]! a
customer-no. c+ Q* L1 G; a% A8 y
trust-ok
2 M6 o2 a$ l% Ftrade-record-one-len;;trade-record-one的长度* P! A; r: z/ H! U" B7 w/ N8 k0 [
]3 x6 X/ X, h0 l4 }
, ~  N6 ^4 j" {1 z/ T
;;setup procedure. K& }0 a$ H( L8 A  L( s
. D  ?  `& z# x# k
to setup) K8 {7 \$ |) H# V0 H
4 b2 o! |7 N) I+ U% L
ca

/ {$ G9 }6 `, w1 L( i! O2 {- E: M: Z! t4 D: G" x& n, }
initialize-settings

- B, A7 g6 r5 u- Y0 ^! L, @" O: `& q& L& d
crt people [setup-turtles]
; X( r- Y7 o: M+ i
" x1 |# l( J7 M' ^
reset-timer
7 Y. T- w7 l( W# ?8 Q: b. N6 z
; v1 O# n9 n# G$ g
poll-class
; {% r3 H# W/ A

, r+ q) t) l0 k) fsetup-plots
% V3 n7 u: k* X: Y' x( p

2 ]2 \: m% Y3 {4 U" h" Z* P: Pdo-plots

) Y' ~( Z* H) L# s8 e8 Y/ R5 ^8 j! `end
; {# x% Z$ \  ~( A+ P8 r; _9 h4 z4 q6 Q, L6 I% ]! U
to initialize-settings
7 k% d9 k: r* K4 D/ b' ^: q2 m  n: P" a
set global-reputation-list []
6 V; A0 v: d  V# h

5 {* }' X) K) M# jset credibility-list n-values people [0.5]

2 E% g- p1 T+ {6 F1 _
5 B) [8 I$ |# Q8 dset honest-service 0
5 b! Q& e. b0 d* j7 d& u! M- c7 P

3 m. d$ j% V3 h) Y) b- g' I( F% S& hset unhonest-service 0

! H5 D; z" K3 h8 C7 }7 T6 G
9 f' ]- X' I% |" l+ C% a& h, _set oscillation 0

7 u3 [+ ?1 H, C
: m7 Z3 a7 \+ A( ~$ ^set rand-dynamic 0

9 ?0 R1 q- i% d" aend. q4 j/ n3 j8 d  I
" B: o3 G6 u1 m, u
to setup-turtles 2 K# U" V  y, ]$ O& i# i
set shape "person"9 _1 x+ k3 f' W! W; @$ {. G. H$ J! b
setxy random-xcor random-ycor0 h1 u+ }6 q  M1 Q; V- R
set trade-record-one []! U' i& j2 i7 B+ h) M  S

! U0 p* l; b' B- Oset trade-record-all n-values people [(list (? + 1) 0 0)]   Y4 t" I( [' k5 U4 H- A

, L  [- V5 m, n4 fset trade-record-current [], \2 W2 f2 R. {- ?$ y# V
set credibility-receive []" P- a" y1 h8 C- ~, s! g
set local-reputation 0.5. T% m& i% \( G3 ^
set neighbor-total 0. E- F4 }& b( M! [
set trade-times-total 0
  |: V6 }7 N/ Pset trade-money-total 0
7 U' W  M  m; T' j. `0 Sset customer nobody
7 M! `$ l) P& e% g( B9 v. iset credibility-all n-values people [creat-credibility], `9 e. [0 E, p2 N. Q
set credibility n-values people [-1]
1 `, f/ k7 C/ pget-color& P% Y% p5 D( J$ D0 f% v7 s& i% j

/ D0 a7 Z$ Z, d( f8 F- D) T; {end/ B% j, D% D: _4 T
9 o! N( G) @; |/ U  H1 L
to-report creat-credibility
6 E, N/ N, @/ u% J( W. rreport n-values people [0.5]
5 D: D$ K/ }) ?/ zend
7 ?- f) Q& r  V" `3 G0 ~) C: ]* S0 I; Y' D; o
to setup-plots6 i. V+ {' h$ \! ^- H+ X9 i
! f* C& S( m% |/ z5 I
set xmax 30
3 E, O# U$ v' A, D$ W
  |7 M8 X; r( U5 P9 a
set ymax 1.0
% E8 \. T; k) u" }1 r

: I1 N6 Z3 B1 d, m- Tclear-all-plots
) I3 q  b( ?+ C0 J; [

: o7 @6 D) }/ f) z) Q, msetup-plot1
9 |- q9 C6 V8 ~2 u% _1 U$ [

8 N' `- A  w" H/ ?; `6 Rsetup-plot2
+ Z! d4 C& G6 F! X6 O6 Z  \7 k( M
8 L* W5 j- m1 R2 D+ P- ~, ^
setup-plot3

0 n) ^4 ~$ I$ A# l1 d6 B3 jend
: r, f! i: S! R- Y  n7 f: m& I1 D8 W  \% t9 _
;;run time procedures
0 W. I& k9 M# Y' J
; x5 Q2 h2 J" L6 r- P# B# Kto go8 l( t3 b" y+ u2 o

# |7 n, s5 Y2 u. x: Gask turtles [do-business]
7 s# T) n1 i3 @0 T4 s4 s. F0 f' E
end
0 ^+ v" E1 D( Q( O+ G' m0 R+ I! T  f% m: E  _6 C, q3 E! O
to do-business
* _8 C+ n" K8 [0 k: q- ?' k
2 c; P! \( @4 [7 d' F

& l+ h' {) O7 Yrt random 360

: P  b( x, N/ ^0 [$ x* T1 b( z3 q( y, V' f$ f. e% e
fd 1

: x+ e% \# k. A$ D, Q) |5 P* n( c" u; N% U% C. G5 B) \. F* o
ifelse(other turtles-here != nobody)[

% }1 z$ Z1 b9 q( V0 }5 [' [2 ]$ e
2 M# E% U. o, Qset customer one-of other turtles-here

, [3 G1 A" @! D' Y! i% p! n8 D9 C' G
/ p* r4 Q0 v/ |2 t; z( j( y;; set [customer] of customer myself
5 F6 P; T# o* p9 t: `8 a
1 V4 z3 s. }2 V
set [trade-record-one] of self item (([who] of customer) - 1)4 k: l% l" s6 Q; k: N
[trade-record-all]of self: I6 s; j0 m* d9 L" O0 `
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 h7 u& @8 b" W7 {* ~* c$ ?- n7 i7 E! u5 ~
set [trade-record-one] of customer item (([who] of self) - 1)% P! D7 j- O& q5 d) W
[trade-record-all]of customer

; y' f8 H/ c) R& l, p6 z* s5 C1 q
set [trade-record-one-len] of self length [trade-record-one] of self
! _. u4 ?" j1 K( X, \' W# X
# r7 @+ R" \, A7 M8 [/ e/ y2 t% |
set trade-record-current( list (timer) (random money-upper-limit))

& K. J) p6 g, W0 Y! m% I# R; L4 E9 V
ask self [do-trust]
2 E1 ^3 _0 S/ \9 G: K8 x7 P;;
先求ij的信任度% `- F6 l3 s( ~% D# B' d! h
% H: N! K( {% C7 w) Z- o0 f
if ([trust-ok] of self)3 n& i1 S1 M3 K- p$ _0 d
;;
根据ij的信任度来决定是否与j进行交易[/ J% L' P9 {5 T( t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, p) M* \4 {6 V: l( }9 y& E3 @) b. o2 ?3 {0 X0 E. W# u/ ^! o
[

4 V1 a( f  r+ P7 u+ }7 k& F- r/ |& p; l9 O3 D
do-trade
3 p* i4 M4 ?* n8 E3 f0 W0 D3 Q
: X6 Z; ^, X+ K* f" |
update-credibility-ijl

# P& j% m6 W' K- {7 }/ V. t' O, r/ @! ~& D& |' R
update-credibility-list+ N& Z4 o; w- ^$ S$ l

2 J( s1 j3 x- v
) g0 Q" O# W1 n  \/ v. K2 b5 ?update-global-reputation-list

; K- [( g: P; G
- z; s5 l  D9 Y" u% C5 L1 p1 q5 fpoll-class
% K$ G2 Q; @3 X8 D+ K, i: w
5 A! p0 {. T) }5 r! h- m
get-color

) }; E$ W' K4 E5 H- W
+ R8 m# T( ~1 ]9 Q0 w6 M" j) i]]8 s  n& |7 W$ z2 z$ h0 E8 n

# }! e' v$ S4 X# K;;
如果所得的信任度满足条件,则进行交易
- S+ V4 m$ w9 Y7 k) O$ B+ A! o6 J3 {0 q
[

9 r) U, b5 x$ k4 _
0 c/ p3 \& I$ h7 Krt random 360

+ f; |" o6 r0 _7 D2 I" F2 N7 D2 ?' e( V
fd 1
9 B& e$ U) D! b
. J* p; v5 c3 G: r6 T% N7 d. O
]

# G# ~* ^5 p9 M% t( ^1 E  d9 [; N6 i5 Q" Y
end

! ^, ^' V, ^- W! k7 C# A2 W& S! V, e2 g7 U/ b* t# q" j; J
to do-trust
( E# w9 q, A, Z/ b# y' p! dset trust-ok False8 ?) L( p' O0 x2 A( Y
( J* D: ^3 K7 J! ^' e' a" U

: e3 e, N' A: A$ |# J; ylet max-trade-times 0( I. Y9 Z7 l( K8 Z1 j& S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) h  A0 o4 N. v& X
let max-trade-money 0
# \, {+ N5 D, p: Q) C: v1 Bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 ~( i) P/ s& r  K- O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ C1 U6 _2 f( u. U% f8 U' P, h5 T- I) }$ S7 [- L
5 T7 B+ v+ M, }1 W5 W- e  r) v
get-global-proportion
' a2 x; ?8 k) Ulet trust-value
$ ?$ W# ^4 b  j' m' B& C' W7 r# Ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: Z8 L6 E: W4 L7 Y$ O" j
if(trust-value > trade-trust-value)* O6 ~* f& `2 T% R% y/ f( Q% P
[set trust-ok true]0 A4 P, `# Z$ b2 I8 y; R& u
end" {  F! Q% E  w/ Y4 U# {) a

6 `3 v$ I: S/ b1 T; e8 o% l  `) qto get-global-proportion/ R' q! H/ `) P2 ]* x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) s! h, L: M/ @; q0 Y0 o! d[set global-proportion 0]' r* r) P2 K+ C+ h1 \) E
[let i 0
/ a) V" v  P3 E* olet sum-money 0. k, r1 U: W3 \* a
while[ i < people]
6 c: O- G! X3 b[
5 O* [! V- `5 F6 ?if( length (item i/ g" a0 u9 P  X  `* P
[trade-record-all] of customer) > 3 )
, X9 F4 u0 X1 F0 [# ]3 m
[& {5 _" w% X2 K& e! }9 l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: c/ F, n* H1 r2 E]
4 q. m+ ?; M+ F# A! ]% d]) b6 C+ R5 L# x
let j 0" K; u4 ]: n2 K/ E; e
let note 0# i% G) Z- j% `  v4 N
while[ j < people]$ U% S; f: \5 G. n) l6 _
[
: I% t+ r0 Q- D+ V. \# i7 Yif( length (item i
5 D6 T( E9 M2 k, G' k& Q[trade-record-all] of customer) > 3 )

1 _' T- D" B0 K" e[6 s, v* P' R0 j4 |9 P6 }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. y8 `1 `/ F! ?) t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 `* m  U$ T1 ?) h* L# W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ B8 `5 }2 K8 R& q' ]+ O6 o
]: B3 @+ }4 U% I
]
9 o; [( Q) z, J/ u: y6 C( kset global-proportion note' e4 O% a$ K9 ^2 B  e. g0 v
]
* r; ]9 ?0 \& V" q6 u1 `% Eend% m. V, s' `$ i, X5 W8 X

2 a0 @0 `8 T, v* A5 a+ `to do-trade; s! x% l5 m& c, a5 h8 y
;;
这个过程实际上是给双方作出评价的过程$ R3 A6 D6 O8 p) o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* ^% Z: J8 ^( ^: F& {" n, n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% |" k6 U, z$ T7 eset trade-record-current lput(timer) trade-record-current" K8 a) b+ w+ ^( c& L& _
;;
评价时间- o( R1 l/ c/ S. ^) w+ s6 ]
ask myself [
% N8 |8 ]6 ^2 y8 g/ b2 ^7 gupdate-local-reputation! v  r# ^; L* ^) j! V! t
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 z2 ]) S  ]% c" M]) O/ {* }7 }  s+ H  t1 p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 e# Z, K  T- K  B# z
;;
将此次交易的记录加入到trade-record-one2 D: N/ k1 o8 I3 u! \3 P; w( F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 o1 @  Z" e, n" E7 }
let note (item 2 trade-record-current )3 q/ L! J1 B8 Q' L
set trade-record-current# q- z* c2 u* E/ ?6 T) L
(replace-item 2 trade-record-current (item 3 trade-record-current))

: x1 y, A4 L5 G' U; nset trade-record-current
1 {" X5 W  d" \$ ?3 |(replace-item 3 trade-record-current note)" C  ^) L: H" Q+ K& }6 r

3 V/ `6 p8 r9 p9 P+ i
5 L! {% w) H5 Q3 B
ask customer [  E; G$ k; P: X9 T
update-local-reputation! U( A+ H7 Q7 u; K3 w2 T
set trade-record-current
) p, ?1 A4 N- _$ U6 U(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  n$ Y3 [8 v' o! J8 N]
2 z9 }: I6 J2 m. M
8 u( Z' c0 V! u" n

1 w5 X9 ?7 j$ G5 p) S) y$ Jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, w' }5 u/ f, x7 ^" n% `
1 Y" @6 V/ n# q, e  p; X1 v, q" a1 X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" |- D% ?% r, L; l: P' N;;
将此次交易的记录加入到customertrade-record-all
  b; k* e! k* F  z* X2 ~4 Gend
3 t8 S! R" D9 j4 ~. K. g4 s3 k( ~% |2 C5 S" O# `1 B( F  H1 o% f+ y
to update-local-reputation
- E  a% x, A5 R% i' qset [trade-record-one-len] of myself length [trade-record-one] of myself
8 i! d7 k/ E2 G) A! A
' w6 j) U7 z0 J' D
, P+ S# l1 G4 Y: R* s2 e;;if [trade-record-one-len] of myself > 3
  W) T: l# F- H
update-neighbor-total
) J7 D  W/ O" W" A2 S' O: ?% O7 r" V1 X;;
更新邻居节点的数目,在此进行
8 w4 V4 j3 Z% T' K- c5 I# Clet i 33 K) G: \. R) ~1 D$ U
let sum-time 0, y7 `( R8 }5 e; k
while[i < [trade-record-one-len] of myself]- v' s; ^7 o( y' k. e3 C
[
/ [1 h& ~  e4 f! Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  i0 ^/ E) O. E3 z8 pset i' M2 ?' g7 G' @6 ]4 _" k; V! G
( i + 1)
) v! p& D! Y( {  r5 ^
]% k4 K% G, J% s  a; N$ q; a
let j 3
" F- @3 y% [9 i: O0 B6 vlet sum-money 0
' J$ [, m2 e) @- [1 v: W2 g9 `while[j < [trade-record-one-len] of myself]
4 G+ m3 B! b5 j9 v: {! T3 i[
4 Y8 R( [2 P( r. t4 Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# C5 P$ q- r% y( I' Y3 U9 w( R
set j- `* f- G' Y8 N* Q% U
( j + 1)

0 `$ [2 s: D, E  m8 P]
$ f0 ~3 f. C& H* t. K# L/ Ylet k 3
! t& P# X5 b! {! v3 }, Slet power 0
& U& n6 Y, Y5 H# W3 }* L* n1 alet local 0
8 P/ X; I( f" `5 U* I5 g, lwhile [k <[trade-record-one-len] of myself]' C+ Q) ]* ]% k6 N9 D6 {, {
[+ q6 u5 z5 ~$ v6 ?4 l' i  [
set 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)
; U+ h/ ?& _* w) J/ lset k (k + 1)
! q/ R: l* L1 _& u- l]: Z7 C9 s# x/ C; B. R
set [local-reputation] of myself (local)
2 E5 J: |* K5 x! w: i. S6 i. o8 t7 nend9 c( K+ Q: d1 H4 M6 f$ G# m0 s, P
' R7 ~6 Z5 j; H: p$ e8 P
to update-neighbor-total
' V% W: o0 d% b8 f+ z' x' Q4 b7 x6 O
/ w& z% [6 `" Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 q: w0 Z" N9 P& x% E! C
# K, C9 e! A" D8 b8 U3 d

8 ~' E" ^/ ^% o1 H* L4 c7 ~end
/ Q+ s: L1 h3 D# z
% }( l! g7 M$ g, Y- dto update-credibility-ijl ' R7 N+ D2 O1 v# W8 o7 t
% l8 y. R0 v6 P$ v, `" ?! Q- E
;;
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。0 m5 |9 q& H( _9 N
let l 0
3 M% B0 ^2 P7 hwhile[ l < people ]
. L; Q* g3 d1 @; x; B% _7 P;;
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
/ o9 `; q/ A6 g' N! v[
: J: f. _& m7 Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" {5 z' p. U* ]! g( F7 [if (trade-record-one-j-l-len > 3)
2 q  V5 k  V+ ~4 D$ {% T[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-one: l' Y$ a, w& B
let i 3) E/ s4 W0 ^% b
let sum-time 0
- M/ H/ S3 k( L& E& @2 r% wwhile[i < trade-record-one-len]
! x: K: W& m$ x4 K6 c8 f0 T[/ p" P2 A( C3 C/ ^7 F: N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* x1 b# Z5 o4 [set i' T7 z( B) l( W) a) {1 v: n  r; ~
( i + 1)

# P/ Z' I+ ~4 B; I( x+ P. F]1 Z$ Q& o$ `* T" O; G; _
let credibility-i-j-l 0
% K' a* |! |6 s; a. d/ ?. T0 D9 m;;i
评价(jjl的评价)( @# {' U7 C4 A% c' b
let j 3* o5 R5 R$ K  X
let k 48 Z3 M' D& ?& F3 ?, O& Y
while[j < trade-record-one-len]
( h! ]/ G+ N) }* |  a. g8 S[8 c$ ]& l: A5 v/ P
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7 i8 E0 S9 C2 D$ P
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)
, ~% {: v( I9 Z2 C9 Yset j" y" v# h/ O3 a5 L$ x$ j: q$ Z+ [4 |
( j + 1)
4 i: X# l) d+ E* }$ G% ~) |$ _
]4 y1 U7 z; F8 h1 s6 W( y: _1 Y( f
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 ))
/ d0 Q* L1 Q/ L) _
5 E/ t! I6 W; |' K6 c$ S

  x* A8 m, [& u: }( s8 Mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ i% U; ~" E& h9 f7 s' j. C! _
;;
及时更新il的评价质量的评价
+ z) ?$ Z0 X# [) Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) E2 K. Q" W2 V3 @set l (l + 1): Z' V8 ?- J5 B0 H
]
3 ^7 h' t6 J$ b: E6 V$ K, }end! f' Q5 {4 l; Z4 Y. h4 B
+ }6 p* U5 K  v% A  v: X# Y
to update-credibility-list" j. g. h7 W! z5 p
let i 0
9 d9 ]5 G8 e( L: cwhile[i < people]
% B2 J& V+ W5 J& @# j[+ H9 Q9 g/ c( r( n, m; \6 |3 }
let j 0
  S7 |* k, J( @9 g7 n' Z( Y' p- Dlet note 0$ c$ T* z, a$ t5 j+ |+ D
let k 0
! x4 p" ]8 p, P" l- p;;
计作出过评价的邻居节点的数目: U6 i% B, N* f
while[j < people]
: d- d! O5 \4 |* d5 c9 t[
7 }0 j+ t# p# f0 a" ~" _& Pif (item j( [credibility] of turtle (i + 1)) != -1)
' ?: X' `3 o% \- O+ Q2 b9 P/ S+ [1 G;;
判断是否给本turtle的评价质量做出过评价的节点+ c1 |1 Z& U; u7 ~2 Y: E+ }4 j5 W
[set note (note + item j ([credibility]of turtle (i + 1)))) r( W3 n& M! t! ?: o7 ]
;;*(exp (-(people - 2)))/(people - 2))]
# g# F+ B: J! |5 }" R& ]
set k (k + 1)
; S9 q4 n- g3 g& a4 }6 h# t6 H]) ]4 M+ N1 r  e
set j (j + 1)
+ f. V& f) {8 g3 g2 r0 H6 b]
" p* o  V. P( ^set note (note *(exp (- (1 / k)))/ k)% _- ~: ]& v5 H/ {4 `4 p# Q
set credibility-list (replace-item i credibility-list note)
7 z* p5 Y6 A5 k$ {set i (i + 1)
4 C' A  E" s$ u3 s]1 J. M0 C; l. y8 M6 n7 ^& J
end3 C) V+ h* A) A5 _

  H( G1 Y1 P. O( L5 M. H0 Q, Wto update-global-reputation-list6 H2 H: f' I; h( ~- l; k1 B0 `
let j 0
% C: N9 ]  A- L! g: Z& l3 }0 n' Uwhile[j < people]$ E# r4 Q0 v- j3 L
[, a2 S1 B9 V, A6 V$ Y& s
let new 01 h9 Y4 b6 s1 R% S3 d& W
;;
暂存新的一个全局声誉; _) b, T/ w4 y: a( d% z
let i 0
, C$ O* t' R8 {% Blet sum-money 08 p" G* X6 c" F1 m1 O
let credibility-money 0
4 \1 H8 r0 S9 Rwhile [i < people]
$ E4 X* _" y1 G1 x: U& x5 f7 C[
2 N: B: o$ j" \1 Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). G* [+ h8 f2 C( ?$ _  c
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# T+ r1 n' f3 P  n- s3 C8 y
set i (i + 1)
( S- B1 f& d: O( `$ u! z- l( J]) g  a. k' X6 P% \% C
let k 0* m4 M# a" y2 B* `( N
let new1 0
- U* p7 A/ H) C* O% ?+ `( ewhile [k < people]( f) B. L  Y, N( w; d
[! u, @* O! A' P1 g) ~
set 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); Z: l' V6 u1 S3 @: j
set k (k + 1)4 G- Z2 ?3 [! Q4 H) M0 B
]
$ o0 V5 _) v* v, j8 ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 u8 X* h; y% H& {, eset global-reputation-list (replace-item j global-reputation-list new)
8 _8 ^* ?" }: [& h3 u7 u0 Dset j (j + 1)
6 g  ~# f3 ~7 []
1 K  A/ h5 @4 E2 Q6 Jend
9 P1 _8 ~. ^. E6 V8 l" B  v. a4 T& v% \6 v6 a" ^3 K! Z* [' }
- P. [2 `9 P4 m; Q1 `
: u- m  B) t/ c# W& m0 e1 d
to get-color
* f) r) Y- h: I! T1 ~, [* K: ^2 V% s
* R4 Q, a2 r+ f+ l- ?: @. Dset color blue
8 T& t8 h( h7 Y2 h- R  O
end; _3 O; \  h* x7 I5 a1 P/ F

0 d# U9 w3 F# z; Uto poll-class
* @' w! t1 ^# u) gend
; i' ?' b. _8 g0 U" P* f7 ?( W; z$ j/ U$ l* D1 P# j
to setup-plot1( w" I) Y  m* t* r

" j) V9 _$ k, O( D* U" f# r3 aset-current-plot "Trends-of-Local-reputation"

3 M+ B* Z) {% L
8 p, W0 M) Y, `4 R) M% U" Tset-plot-x-range 0 xmax

, C) p0 P/ s) Y+ X0 J4 l5 h1 F" g& X( i6 M1 e& J2 M4 e' J: I& S
set-plot-y-range 0.0 ymax

+ ~; N! g, S! J: Aend9 {- v  W  [+ r# H  e3 d
. J# t- g: m- k. B/ a1 U
to setup-plot22 U! C" Q# V8 {( I8 S
0 S  p! T7 g1 a& U* j
set-current-plot "Trends-of-global-reputation"

! R+ B4 E! X7 v" f5 i4 P* n5 T  }6 M  ]9 ~  t. U$ c8 K
set-plot-x-range 0 xmax
* V3 S+ p) B  o, s+ s
" r/ ^4 j! V; B
set-plot-y-range 0.0 ymax

  R$ d5 Z3 W, W% Pend
! o8 y. q. X0 T# n
( V. c2 o0 a4 P- ~# _to setup-plot3  i- H& U$ W* A) @
, j% A/ G3 L" z# }
set-current-plot "Trends-of-credibility"
3 l: B$ R5 P, a( i

3 Z2 e& o4 N( Fset-plot-x-range 0 xmax

+ O* D' t& h& Y/ ~6 U) E( G3 U1 u+ P- j5 Y' u5 S( E8 k; \
set-plot-y-range 0.0 ymax
6 F5 R! i! `7 l' a
end
5 C' q7 Z* G! s: t! X  V7 }& E- q- z% m4 d! \
to do-plots+ H+ s) l2 w" M0 e; [) j, m
set-current-plot "Trends-of-Local-reputation"
' |- |/ w  |0 B. s: qset-current-plot-pen "Honest service"
; m9 h% ]' o9 x3 u/ wend* |2 E: f/ x  e$ a
8 g. }# r- N  l, k
[ 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.$ @0 \& }+ O% X* z$ K# l
1 S0 o- C  y9 u/ W$ n1 R) ]' z
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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