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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 V% R8 `# p% {to do-business 3 ^9 k6 @& F( W
rt random 360
' {. e. z0 e* q. l2 ?2 J$ T fd 15 Z+ D$ ]) M* m0 H
ifelse(other turtles-here != nobody)[
* F7 Q3 O, g% c" O( S+ Y# M   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.* U$ W4 M/ m. A# J  F, o% I" s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 q# u" {# N: B& b0 k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 O3 W+ F6 u; B. u7 B3 w! U   set [trade-record-one-len] of self length [trade-record-one] of self
% i# V7 b7 t" Z2 F0 Z   set trade-record-current( list (timer) (random money-upper-limit))
1 b0 O+ m  V8 C! q: |- j* O8 `% I: c) P( y# a5 W) j3 q: q
问题的提示如下:
/ J0 e& o: m. K, _( F5 i, ?: T2 N9 [3 m/ n8 o9 |" E+ e
error while turtle 50 running OF in procedure DO-BUSINESS
2 O& P: C* Q7 F$ k) ?) k$ |  called by procedure GO' A2 e0 @& p/ {3 D# J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 r" b; M& d  g; T4 m
(halted running of go)
. y' E% I2 t+ q; a6 L* q5 L8 ?; m- q8 t0 ~$ b1 J
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~~
' I3 [5 g2 B7 H& l! u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
0 y- Y+ n9 `; B1 Lglobals[
5 u6 u) H: b4 K$ P+ L+ a. @xmax) h  b9 O- B, R* N) E
ymax
; c9 w$ h0 Y4 F! lglobal-reputation-list* R5 `" u# ^0 `+ b) \( o

- R8 @7 H& g, t2 r;;
每一个turtle的全局声誉都存在此LIST/ ]; [( i  S$ ]+ B! s* |
credibility-list- ~2 {6 y* N! {$ R
;;
每一个turtle的评价可信度
8 F# a- W! \  w& }" phonest-service
7 U! N2 K  m# m/ runhonest-service  u0 C' m0 [1 e
oscillation
: r# w4 x# a& Q8 Srand-dynamic
$ [) K( u5 J7 n; E5 W  V]$ U% F/ U! R/ `" E: H% K

* n. M7 @& M3 g/ |6 W# V3 hturtles-own[
+ b( l7 X0 H  H+ I$ mtrade-record-all# e7 M* b, W  X, n
;;a list of lists,
trade-record-one组成
/ `1 M; w& D/ d9 F$ a7 f! u6 b5 Etrade-record-one
: o, Q0 m* m6 Z$ N" p3 M/ d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; V9 S- s" j7 {' ^3 ^7 ^

; M2 L6 a0 s2 a5 Y;;[
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]]  p2 _1 l5 y: ?; q: P+ k
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]% z7 D; x# ?8 f" P2 J7 X" S
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list
4 j& O. J. S, \0 Kneighbor-total
% U: {& }8 g8 s. R9 F* l  e;;
记录该turtle的邻居节点的数目
1 j/ ^1 Q/ V; G' [1 B( o8 ntrade-time/ [9 O" [0 R! @9 S
;;
当前发生交易的turtle的交易时间! F- ^3 N  X& q9 a1 a* [! s
appraise-give
! Q7 K  R. B8 W;;
当前发生交易时给出的评价
9 w9 o8 G2 ]3 O/ ~appraise-receive" Y% K/ e* y# W, A1 ^6 P
;;
当前发生交易时收到的评价1 i* f0 Q7 I# }0 c+ D1 H
appraise-time
; k/ z4 k0 X0 D1 t, x, e; [* m;;
当前发生交易时的评价时间
* w  _; F& x' I) Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, d$ V- \% |3 t! Itrade-times-total
9 b; |3 O# ~% h! g& {  ~$ p5 Q# \;;
与当前turtle的交易总次数
( ^* O; U5 y8 [, s; dtrade-money-total
, Y% W2 R) j/ i+ z# x;;
与当前turtle的交易总金额8 d! U, Z" l; h6 X
local-reputation: s8 r5 ^, h0 V0 V" `8 V
global-reputation
' a; ?* u: M: t. A9 A" Ncredibility
  G  \( C% R3 R5 j% l) n0 Q;;
评价可信度,每次交易后都需要更新
& K& Q* ]! P4 s# g" Q' ?# r3 Tcredibility-all; t. s: i- p5 D) B4 y4 Z, c0 t! z
;;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
( G  L7 J# a; ~) h: T$ X4 {
& A, l" {' [, k: f/ P7 E8 n;;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
" a1 F, Q+ T: S& jcredibility-one6 x* A, p* @3 o! q6 g# O7 |
;;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$ G! k4 ?9 u+ ~8 P
global-proportion
. a; A0 R1 f- ?4 fcustomer; ~& g1 U$ f3 q+ }4 |, O( b) C% K
customer-no
7 F6 \# c' T4 X! Qtrust-ok+ Z0 t. l$ w1 g# O' q8 ?& `2 U
trade-record-one-len;;trade-record-one的长度
& [2 E* ?" Q' T/ }7 Q6 d, z]
* _0 ]' f9 j$ ]9 t3 J6 X2 I  F
" L7 M* h, b; b4 F  y;;setup procedure
. _  m5 r( a; _1 r# S5 u
# v1 r$ Q  \! b) p' nto setup
8 T  c/ Z8 B5 v8 l% ~  e' x+ j4 z! F7 d+ c$ C% }7 M0 _& W9 l7 I
ca
# ~$ K1 D' o$ H2 {( H" ^2 H. r. I
; n, o9 r! O" y. c' a
initialize-settings
% K) H2 I4 L. k: v, }
; n" L: n" w; j1 }% t- V
crt people [setup-turtles]

! e1 |7 K0 f* ^/ d! [/ g; m% k/ |. K0 Z/ r! l- c
reset-timer
. {8 A3 d9 a8 q- R( L: I% d  M' I

  P5 x4 L4 `# \( Gpoll-class
9 ?3 i# u# p' ^/ p1 ~4 f0 M& ?; f
0 [2 ]0 c( L8 W, n1 h0 R
setup-plots

8 a4 |  @, H! J9 R7 L; A
0 z0 L& j8 m2 G  Odo-plots

5 j/ M" ?$ I7 ?. V! l3 _2 d0 wend' ]1 A/ N  `$ c$ ^& O
9 q$ f% j) }4 v' {9 r
to initialize-settings
- ^* P1 \/ R6 X% j( w/ V  W& P( p- l# W; O+ U( t
set global-reputation-list []
, G' T2 f" K& W' I

* I1 ]3 K' f1 A. ?* _set credibility-list n-values people [0.5]

) k+ v! q; x; T! ~
$ j3 x! l, }& A" Q2 W$ X. ]7 ^set honest-service 0

" Q' e9 V! i8 l3 D% A0 K( b
& {. `3 o* J* g+ mset unhonest-service 0
. [9 G2 J% ]$ B. K) c9 C

2 G; }+ Q, d- l5 P* Wset oscillation 0

  M. w4 p: l# v6 A* A& F! B0 m3 `9 {$ n% U* Q
set rand-dynamic 0
# |! W0 l8 e2 _! g
end3 z0 c. J/ {* N+ y( M
' k; W8 \7 @; p) Z$ K7 T% ^
to setup-turtles 3 a2 ~. i  H! O- E
set shape "person"
- U# y! c' _# e; m2 r# F% ysetxy random-xcor random-ycor
' {6 {. N) x  Q3 Aset trade-record-one []
- y1 i* ^* Z  i9 r+ Q6 v+ m
) L# W, h8 c1 [+ b! t& L) P7 m
set trade-record-all n-values people [(list (? + 1) 0 0)]
, J$ b3 Y+ W+ G4 a: h9 }

( i7 Y3 J; Y$ ?/ bset trade-record-current []: g( y. }+ Q/ \' Z- V7 V% `* w
set credibility-receive []
; C4 K* Z3 N  M, e/ Hset local-reputation 0.5
* O3 L/ \. j  n* f% Q! n$ c" Yset neighbor-total 0
0 Y: E% @  a3 L7 Y# Oset trade-times-total 0
4 X" Z6 j. N: G* Qset trade-money-total 0/ Q3 Z6 V. ?1 u0 b! \. @  }
set customer nobody
  _! L4 k# @( u" }8 kset credibility-all n-values people [creat-credibility]. A/ N7 m9 {; Z
set credibility n-values people [-1]* Y; Z$ j1 _. c
get-color# `/ ^. w1 d! @" c4 w

; S/ ]6 h0 V: S$ e! Iend
* t5 `: o4 Y4 a( [1 b, G6 T- t0 y7 E4 }( y+ G( X, Q
to-report creat-credibility
0 C8 c, G8 t( ?% |5 F+ o* mreport n-values people [0.5]
% |5 ?8 a+ I4 b7 l; b! ?1 C) send) P% ~, k( N/ _2 h9 j( D

* a7 Q: A8 x' bto setup-plots
1 [$ j( w( f1 C6 ]6 c" T+ Y9 a/ _
) Q+ ~- K: w+ `( r* s: B7 Yset xmax 30

# Y) k) C- T  y# N6 C  E6 x3 a) X
! S# O0 {6 N* Kset ymax 1.0

3 e5 D; q+ Y' d4 @' `! v; U" @2 _. L- x2 h+ }4 v/ Y# M# F
clear-all-plots
+ X1 F9 W: H8 r
' L5 a, O. F& M% A
setup-plot1
: |5 C9 ~3 h+ W) A
, y# X0 A' Q/ U; o
setup-plot2

( J! Y3 o  l8 G. m5 Z. V5 U# Z3 X# p) F' t
setup-plot3
: ]  P4 ]: R; }1 X3 ]
end! }, c: ]8 `: I4 P9 M: Z' g* i

/ p. C2 I$ C5 g' N/ L: U;;run time procedures# D, y) X- J3 }- z2 y; t

- P# g: o, P) @5 r/ hto go2 O. P; f, X, S* c8 U1 s5 A
7 j  g0 a+ b4 g0 a) T
ask turtles [do-business]
2 v1 E$ J. [% J0 Z+ W+ N
end
3 o! D2 F- s3 u- J" _6 E& S
1 h, n$ ^2 M, P  o/ i: P2 |to do-business
/ i4 I/ j, D0 }7 \$ O

! T( f; d, e& y- q1 z4 Q/ x! U4 }) D8 V- w
rt random 360

; w& U( o# |9 Y; w( |6 l- P8 U& y" u
fd 1

$ W% N3 a: c. U; y9 K0 p. _, t# z
1 e2 M( M5 W6 G  hifelse(other turtles-here != nobody)[
# {! C7 e6 L  U& k1 V; x. a

' u! g2 a6 ]' K( J  \set customer one-of other turtles-here
/ N* [4 T, R% Z7 e( o1 y
* W% C( K# D' N) L+ c# U; {
;; set [customer] of customer myself
$ b4 q* N0 W2 G1 [
8 y1 U! n% o; {* g5 [
set [trade-record-one] of self item (([who] of customer) - 1)
1 f  R2 x. [$ r$ b- F[trade-record-all]of self
/ y$ w8 A. U( d1 w& }) U, Y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 \6 D$ v/ p1 F& p8 \
  f) K! V/ f2 e1 W; f" T
set [trade-record-one] of customer item (([who] of self) - 1)
' R  N  H7 f0 \& J" x[trade-record-all]of customer

. _, @) y; |: b3 Q/ l9 p0 ]% u
3 ~( ]; i! q, G0 aset [trade-record-one-len] of self length [trade-record-one] of self
  m2 X8 k2 w5 ?9 E9 U

" `/ E8 f% R% K; s2 B6 zset trade-record-current( list (timer) (random money-upper-limit))

$ g9 v& A) O% W+ E! N$ |5 H4 i' q0 N1 u# E" v
ask self [do-trust]( u. p' o# B/ r9 E& h; b- f4 J; J$ c
;;
先求ij的信任度; P# e. C7 |6 Z) o" n4 c8 d2 y# L
9 O8 `2 {. C. E: E$ j+ w) [3 o4 U
if ([trust-ok] of self)4 \  j! i8 r! K& K" l1 A
;;
根据ij的信任度来决定是否与j进行交易[
4 x$ {# G5 Z0 f( [1 O4 D* yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 R5 w0 Y- k+ a% ^

3 h5 a7 s' w7 P# s8 e! S3 ~[
" `% Q- |: U2 O

  W9 W9 s- s- \1 j! hdo-trade
- C' o: n& _3 O" l- c

7 B/ A# C0 l* @& S( A+ z8 Cupdate-credibility-ijl

) ]- l2 P, z1 q! l' O& F* ?0 r* G, E+ q
update-credibility-list6 D; I" M. }* K

/ l7 l0 k. c, X2 n) R7 Q, \5 R8 T8 a- L1 Q0 T
update-global-reputation-list

3 v2 k  e# W: f5 S. H9 b8 l, G  l
' w" g$ O! m3 gpoll-class

# F) R) t  }+ B1 _; z. q/ [3 c
) h. U9 X' b" l+ [. G$ B: W; Iget-color

) _) p3 J" p; Z3 b2 J: I) E7 `! }9 G2 ]; V9 p$ @7 o
]], d$ v4 `; F# B: @% g
. E  `; w1 u5 ]7 w4 U* _. W% `
;;
如果所得的信任度满足条件,则进行交易2 e9 m6 {; {% e7 P8 d
, ~- p) F3 m  p( M8 \, r& n
[
+ m7 _: j7 _5 U& O- O& C7 k

8 }/ n/ g" p* L4 _rt random 360
4 w. I% {1 |8 s4 z; V9 j2 L$ B

/ w9 I, F2 R8 ]1 `fd 1

8 \3 c6 t9 i% y3 L* S; K0 @2 E1 d0 D$ m: {' E" {9 i; `1 R4 D
]

* U9 J0 B! z! A$ Z( j6 V$ S) V
, o9 U' ]4 y& f! E; u. Xend
! w( c# P. K$ e  Y; l1 l( H
8 e4 Q' R! R9 J7 J8 y% H
to do-trust 3 S; k7 e% V8 x5 ^& E7 a
set trust-ok False9 q5 T# V( R( T$ c  D

( g9 z8 A9 ?0 a# c" t$ n/ l* P
6 T$ n8 a# L8 P
let max-trade-times 0
8 w+ d. ?9 l3 m- aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  \5 B9 ~& y6 n6 ?/ r
let max-trade-money 0/ |+ _- u! y" D5 r, L) Q$ r! B
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! x) Z" n2 x4 \/ Olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 V4 v: g/ Y) u  }+ H
' l0 M6 o+ K* V) o
& \: w( |5 b3 Z# h
get-global-proportion
; [1 A3 Y) L) Plet trust-value6 Y  _. L+ Q8 S+ ]) A$ b. r) y* ?9 y
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)
. S! _' K; U" g7 Z
if(trust-value > trade-trust-value)  ]0 W& e7 e7 E6 E9 Z. [" B5 D- h/ }
[set trust-ok true]
0 F8 M! B$ T1 W# ]( k9 mend
$ a: F& Y8 ]) _; m' \" U
: [' n0 ^" G. ]1 r+ ?  `. vto get-global-proportion& M3 h6 h, ?# K+ Q2 J5 t' K0 ]  r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ {% F# {9 k7 A( X3 ]3 k
[set global-proportion 0]
9 c# |1 U0 P$ f) w% M2 w+ C$ p; N[let i 0# X- w2 o8 |9 K; z/ R0 W' ^" E
let sum-money 0/ f$ ?7 l. N; S8 u6 W
while[ i < people]
. W( ~! v) [" {6 |0 E* ^! K) |4 k[
4 o; j' Q1 `' v, Iif( length (item i8 F: ^8 Q  s4 ?* A4 ]5 ?
[trade-record-all] of customer) > 3 )

2 A- ~, N2 t7 K* z: c6 b; }[
7 Y7 p7 Y0 y( N/ tset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). ]! t$ C4 ^, r8 \8 J8 z& N+ ^% e
]) U6 q% V8 B" S8 k0 K7 {
]/ @: U$ L: b4 [/ F% Z3 H
let j 0
0 U: Y4 @! U8 X2 z3 A: t- K4 c7 _let note 0* a3 c* u, u' ]
while[ j < people]+ L# Y( ^2 k6 a: g
[
+ w) d6 ?  L) K8 w* y1 r+ C! {, ~& aif( length (item i3 j5 _% p: K6 _
[trade-record-all] of customer) > 3 )

/ \; _* |. l& d  B2 J5 X[$ k  {; n. M  K/ U) a
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); s8 d' y! E* K% \# f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], V7 D8 A4 x. s6 B/ g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# v4 ~+ t" Z* i! g: Z
], G) h7 `0 g( F8 Y
]
+ g4 t1 \! j' C, W' k% lset global-proportion note
0 H9 _/ y" n# {" X; i3 H]; `8 l7 p; z0 S# b8 C# O4 T
end
8 C' p' V% _, g6 w9 E( _: `4 t+ x/ ?% m; d$ F( B
to do-trade
8 f  u+ ^+ U8 i- U5 {;;
这个过程实际上是给双方作出评价的过程$ D8 B4 t, I1 u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: |  }. _5 b5 L. [* qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 t+ I1 i. w+ f9 P. Y+ k3 a1 qset trade-record-current lput(timer) trade-record-current
" ]7 y% j' `! ~, {;;
评价时间
) y, S8 l9 `$ {- ?7 k1 qask myself [
8 F$ p! M* e3 y- M: d7 H+ Kupdate-local-reputation. U& m5 R. `& h
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 s9 J8 R- m/ [; ?2 G9 @]
8 x1 Z0 c( J, zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 b: N" ?6 ?; X/ y
;;
将此次交易的记录加入到trade-record-one
6 Y+ f$ D) U9 dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 w1 ^- k* Q$ G; o
let note (item 2 trade-record-current )- g; G- E) N0 h0 j
set trade-record-current
4 t: Q, a! \$ u! P3 Y7 a(replace-item 2 trade-record-current (item 3 trade-record-current))
( _, F0 n* S4 X* G
set trade-record-current
* l6 `* j! ^% _0 O2 w(replace-item 3 trade-record-current note)
* f3 {8 x2 s* y! }/ h$ N4 X+ G& I& @5 q, O4 q& N9 B. H. n: Q

+ q+ Y5 c; b. o& `5 wask customer [
7 F7 g% J" t. s& h5 W5 n- P6 hupdate-local-reputation
$ ~% }: k' G/ `! _: Oset trade-record-current
- M0 ~# F: z/ r0 U6 P1 e  g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ |4 r/ I# d4 _: b9 C1 L% D# s& d]
3 c  Y! O+ a/ ?3 V: A1 Y$ T. B' ?5 T3 s1 o$ D3 Z2 l" m% [* C
( J" W( W3 d2 x+ s; G1 r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# ~5 I2 j7 E: Z3 ~: n: u4 c9 {" l5 r! G, v

5 p4 p5 {: u# w1 M$ x$ X+ k2 hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 S+ K& `( Y; J% I
;;
将此次交易的记录加入到customertrade-record-all3 v7 C, Q9 O! m! S9 n
end
9 P, g6 ]) b1 Q- l7 s( F6 \0 `2 \' V( C
to update-local-reputation# ^5 q. O: K5 j! b" V, T! X
set [trade-record-one-len] of myself length [trade-record-one] of myself) z! v* x6 A) j( O- m

) m1 u  k' n% @! [) b- F7 D2 U5 t2 Y* }$ V4 r4 E4 }( {1 K! X7 K
;;if [trade-record-one-len] of myself > 3

6 l7 L7 m1 C" W( j3 j) \, \update-neighbor-total! {0 U6 Q4 x/ Z7 k
;;
更新邻居节点的数目,在此进行
3 X, f; ?/ V% y/ tlet i 33 E% V) d% j) R! f& l  O
let sum-time 09 t+ p, n4 o" [! g% l9 E
while[i < [trade-record-one-len] of myself]
$ F) I! i1 G9 Q[* w0 ^$ o0 i; ?! \* K4 r2 A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 B# J2 O6 |* Y. N- D9 T2 x7 i
set i- ?( [5 |- m  e( L
( i + 1)

* n: x6 u( Q8 a' I# R5 E& J]
; V- T* n4 n- r8 zlet j 3  O: r1 T, J" ^  a7 B! F/ X9 ]9 x
let sum-money 0
5 j$ v4 C6 `: b' K) Bwhile[j < [trade-record-one-len] of myself]
6 e2 A4 Q: g4 P1 m6 x7 {[
# H# Z  W1 F" ^5 p1 a& zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' x& A) I- D1 @# C$ V
set j$ U+ h, e  C: M) [+ m
( j + 1)
" q( y) a# j2 `5 D2 Q7 p3 b1 U
]0 n, o% \6 E6 l2 v# o+ Z2 I1 W" z% U- A
let k 3$ U2 Z7 r! {% H3 t9 A
let power 0
3 s5 O  d5 r# y$ wlet local 0
7 b1 w% J& P& h9 jwhile [k <[trade-record-one-len] of myself]' V' A, U- A, C
[1 J2 J7 ]: \1 d* c) O  v
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) ) x2 c2 p9 u" M2 g' [" H
set k (k + 1)
; p* x9 x% A6 ~6 p. E9 |4 L% A]
) c/ Y+ J0 d% C5 Vset [local-reputation] of myself (local)
. n+ a7 ~- N$ Send" v4 K% J( g% M2 v4 b4 Z3 \
* f- t7 i! H- ^# G: H
to update-neighbor-total
2 q* h/ w3 N5 T* {' _5 g- }6 X8 v/ |6 S9 n" d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ \6 Q- [2 G: Q' D( E

' l& h3 E, D9 Y" i( j, W

2 r, J% L, Z$ P% q9 U" Kend
( U* c" d$ c- _  B
, F9 M, r3 z4 W! x' f% kto update-credibility-ijl : p( Q2 H3 _+ t+ J/ L5 h

. E0 u: b( Y: o: u* A# W;;
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。" \( P$ g& r+ D
let l 0( _8 S! B# w3 w, Q
while[ l < people ]
; X( I( K! I1 M8 ^;;
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) M( K6 O% g1 ?6 m7 I  G
[& o( x) `0 M) E" m0 I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 Y# Y5 T* C9 F+ f) Uif (trade-record-one-j-l-len > 3)
: b% s# ^. i, y' m) d[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
" S4 x1 f9 G# k: P  c7 N; z* Slet i 3
2 ~8 z4 o$ H) m) V1 E4 C3 }* k8 wlet sum-time 0% n* _% ]8 n: N7 E  O9 _5 G
while[i < trade-record-one-len]$ C- h9 @" j1 h4 n  ~
[; `( [5 n9 ]; i4 n. w5 ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 i( h7 w: q& W
set i
, g' X* N$ h! r5 x$ g. j; p  r  q( i + 1)
& w  O2 f# T# {5 j1 t" _" E( E$ \
]6 p+ c: o' D! X/ G! S+ f4 Q% q
let credibility-i-j-l 0
7 r9 g$ T. e2 F& U! I;;i
评价(jjl的评价)
6 P- ~6 ~  x& ilet j 3( l, ^* F+ s. _
let k 45 Z, V" g# Q2 }; m
while[j < trade-record-one-len]$ J6 d9 S5 g. z( g7 e
[3 ?8 {8 t9 Y4 }  c% b' V
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
: d. k% u' V' V! L" t$ B0 s6 Qset 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)
7 [* u/ y- S  h! t6 fset j
4 N+ z4 i$ w1 I' m" U3 O# q( j + 1)

, T3 p, Q: S. A2 Z8 t]
! ~+ F8 L( P; o6 P0 a! }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 ))2 ~! Z% M; Q* V7 q, e

: ~$ j4 Z" @& ]- {# f+ _

, v0 j# J8 u+ }6 |9 W6 z1 K4 h5 x: glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 O3 p9 E3 ?' o3 K2 W# };;
及时更新il的评价质量的评价
/ w! q, [: M1 {/ F( p4 L5 K' Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 ?* j4 f! u7 \6 }2 t* Mset l (l + 1)/ b4 P6 y. a! a/ N. U* J: c
]
' ]5 }' w- j4 h2 G/ r6 Wend) {" u1 }0 p6 N2 j7 S

! L. p: W% n1 g% B( O2 l4 cto update-credibility-list
/ n' ?5 [! S4 X8 R+ c# T, H# L& Slet i 0) s- a2 M* [9 b0 @/ T, F  J: v- [
while[i < people]
4 L! M5 K. F' [: b" A/ u* i[6 X+ H) b. P$ D6 ~/ T; c% ^, |5 P. K, w
let j 0
: D$ }5 V2 d0 J" o4 O- g& H$ S# z" hlet note 0
% g9 Q! g* \0 K$ `+ Z9 ]/ qlet k 0. L, q' c5 [* y2 [5 s, H* F! t
;;
计作出过评价的邻居节点的数目
1 ]1 k+ f% V9 K3 w# K& u& iwhile[j < people]
1 F8 F$ M; U7 Z; n! q7 b3 O/ [+ L, p[
# X' p  c4 E0 Iif (item j( [credibility] of turtle (i + 1)) != -1)( S( B7 [2 l/ R/ _9 z& w" I
;;
判断是否给本turtle的评价质量做出过评价的节点
8 W! r. z3 U) l2 C+ {. S: \  {[set note (note + item j ([credibility]of turtle (i + 1)))  |0 M9 f$ J9 I# e/ P( |" x
;;*(exp (-(people - 2)))/(people - 2))]
/ R, [2 d: |  a& n5 R% s# s4 _
set k (k + 1), q3 P' m1 C8 `7 c
]7 V' z; v" K, I7 B
set j (j + 1)" ~: {# _' f- V2 @$ \# d# H) O
]# d9 O% ]  ]+ J/ n: k  A6 F( T
set note (note *(exp (- (1 / k)))/ k)
/ ^# I, N+ N( b7 V  s+ F5 I4 nset credibility-list (replace-item i credibility-list note)
, Y) c; Z' m+ D; B# Qset i (i + 1)
1 l) ~2 j' N& t) a% z. ?' Q]; U8 F4 Q2 ^" z0 e- x& X) x
end5 L0 I  h8 ~: {; v, L' J- M% `

2 g; `" l4 x# |* Sto update-global-reputation-list! d1 _  a* [5 B
let j 0
* r- n4 H0 h& T0 @/ Mwhile[j < people]; I: q1 Z- \; {4 O9 K
[
, }/ }$ H( D: r! @let new 08 L. Q& R  t5 w$ T+ @
;;
暂存新的一个全局声誉
' R6 P2 C8 F; c" z! K+ Hlet i 07 [/ D+ D$ k9 l; |, _) R3 a
let sum-money 0
8 p7 M/ i7 Y' q* U  Flet credibility-money 0
, U8 k; J: J. l- t* W+ m6 pwhile [i < people]' w: d' X2 D1 |$ M
[( L# }. ^8 H) E% `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) v2 z* Y. u& t/ n# o8 x0 R6 \' j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), y( |& }* \! o7 Q/ ]0 [
set i (i + 1)
' f5 s6 O2 f  Q]" ^: p9 k( h! |) J. m3 p( D0 S' r
let k 0
0 Y& z0 i: N4 y6 ^let new1 0
1 R9 U% F+ [* Y+ f# F$ p7 f2 Iwhile [k < people]
, e6 Q; H$ K: g& z$ n* Y7 r, b[4 _5 X" s( Q& W1 {8 O& s) j
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)
& @) c  m+ X; T" t( j- \# Zset k (k + 1)/ b0 W7 g; C& g( Z# L3 Q- b
]
; E! N# l* [2 [+ v  ~set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 H- ?  b. F- ]: v7 D
set global-reputation-list (replace-item j global-reputation-list new)& }1 U- q! ]# M4 S6 p) y
set j (j + 1)
3 F8 O% _9 n; L" G  a: I]
" c, J$ h2 r% e3 {1 B- f  \end/ W& j0 z) M- J5 O* }% ^
1 c, |' n! Q# d$ v8 G) ?! A7 s( E. b

; k1 u! s8 K% O  O3 {5 l4 C. S
8 l. n' @3 T3 ~$ \! j" n7 Zto get-color
% @% I# m) [/ ?% H1 \4 p; B2 ]3 Y/ i# R# x: r; n
set color blue
$ y1 }4 x. D+ c& p
end
7 g; t2 w# s' g! i0 F$ D3 w+ v  G* N- x
to poll-class" }% ^( m+ r  d6 `1 j
end9 O6 ?! O3 f, e5 u# i9 F- |
5 x5 g% z+ V9 m6 J' {' R
to setup-plot10 t5 z0 [" U5 H* U

5 g, ?/ K8 V3 n) cset-current-plot "Trends-of-Local-reputation"
/ V4 O8 H$ @! X& V+ P/ Q! M
! e: X: U) z1 f8 N* U7 o2 m! G& g3 u
set-plot-x-range 0 xmax
$ X3 n) R1 @& Y* _9 @
& |$ w" s* L9 w3 N7 g, F& _7 c
set-plot-y-range 0.0 ymax

5 I- h' `/ d: r; z: j6 T; Iend
5 _, r* I6 t  `5 v5 M; P# s! R
7 d$ I  `, M& xto setup-plot25 ^, d7 r* e- d' }0 H* s) p. {1 H

& e. m' N7 q( G: ^, p% P4 E8 {, s3 Kset-current-plot "Trends-of-global-reputation"

4 R' Z6 n5 `' Q4 F9 t, q' ^  n+ ?" e& B, x/ \" E
set-plot-x-range 0 xmax
& u' M! `! p9 g+ P
5 r5 b6 n) b9 r2 L0 d% o1 m  {
set-plot-y-range 0.0 ymax
6 a- I6 K( Y0 G7 W# H6 {- k
end$ A! V7 c! w/ ]$ k

0 y# ?& [1 z' w! E- f2 gto setup-plot3; W* f! O7 v/ p! K5 F* B7 |
! d- {6 v2 l1 E9 k0 J! Z5 o
set-current-plot "Trends-of-credibility"

' G+ c2 a6 U4 ?8 l$ q2 L" H  f# ~' \9 f* U- B% M
set-plot-x-range 0 xmax

1 X! S# m* a5 K6 O3 P/ v5 u1 L9 T0 Q
+ l, }5 }% F+ y" @set-plot-y-range 0.0 ymax
$ L- a- X4 m" i: w. l
end& B+ k9 _. Y% m2 A) x$ s- l0 ^
* L1 f# u/ E; c
to do-plots
& B  \7 e4 g8 I6 iset-current-plot "Trends-of-Local-reputation"
2 @8 R! p( {0 ^set-current-plot-pen "Honest service"
8 M4 x# g! q9 ?4 fend, E3 T7 m4 O* f  i7 Z- O/ _) s
) O( ?" o/ c/ s% m5 U; u( Q3 j
[ 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.  [7 w9 Z% @* N0 L' s
" y1 t* C' Z" V8 j6 [
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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