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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:
2 E$ P% M: p9 S9 @to do-business
2 T3 J& |& T& _6 D0 ?1 W rt random 360
% E+ V; J: J1 @* U' A2 Z  ` fd 1
; M4 f- q3 p1 C- e: {$ \: d. O ifelse(other turtles-here != nobody)[! z5 }1 N0 h/ o! d
   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.
: o7 g: M$ S, D. a: ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( j4 X' u9 N1 I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! V& d' d. o3 k( n( E9 @; [   set [trade-record-one-len] of self length [trade-record-one] of self
; w3 A$ f+ v) W2 U- i% X4 n; z   set trade-record-current( list (timer) (random money-upper-limit))! ]( }* b' d+ j  T

3 K- q. a( ^- K0 h8 U$ `) I问题的提示如下:
3 b% a0 j) s* ?/ b' s& K2 ^" K1 Z0 f, u9 I1 p6 N3 K9 k
error while turtle 50 running OF in procedure DO-BUSINESS, n  g; f; e6 E& O' h7 l  w8 D
  called by procedure GO0 }2 s  W- M4 @- Z0 d; U$ ?2 s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) i4 X! S+ F8 a2 g( D8 k3 U& T
(halted running of go)8 y. c( u; `: K: _& ]5 p( X" C1 ~
  e; f! D# v4 d. i- l9 b/ Z/ h! g
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~~
+ ~4 o1 V8 g2 H# P# l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
" t$ A( ?6 H, e; R8 i7 {* E) ]globals[
, N( b7 W4 S7 u" [3 X8 E, P8 Exmax8 X1 r7 H* Q1 K6 c1 J
ymax
7 w- @' L5 N& Q$ {, N4 ]global-reputation-list( j6 m% _: z9 A+ H# i* q
  Y( F* v7 Q; \5 u' o7 v
;;
每一个turtle的全局声誉都存在此LIST
' @  V! }+ V4 m6 \/ f' Z$ s* K$ Pcredibility-list2 d0 c" x/ N: _+ v! f
;;
每一个turtle的评价可信度
4 v3 K; i5 o" o8 u! A; Hhonest-service
: ~5 ~$ O6 O, L; \" yunhonest-service
; y1 M7 Z: }$ t+ y; P0 Aoscillation
6 R6 V+ s7 p4 X3 u3 U7 jrand-dynamic
; M( ~, |& d# m0 E" y]8 u+ o2 S' o3 p% A; _9 M7 @

1 D& b6 R  z. @! Mturtles-own[) {+ v4 y3 B' D: I  t7 Y( b7 e
trade-record-all; v% ^7 |+ h) K
;;a list of lists,
trade-record-one组成- |/ r: t4 H% H1 M& B0 Z
trade-record-one
3 g9 t3 x, k* ~  J; Y7 a0 y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  Y& ?& n) I5 Y; a

. R3 w$ s: ]& 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]]% q- U8 _1 J6 z
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]
' h5 X7 `- q. p5 K/ V$ e/ I" pcredibility-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list0 A, l8 j4 _% u' Y" y
neighbor-total. @! g) \; ^1 H  T
;;
记录该turtle的邻居节点的数目( b# U( H( t) ?  Z
trade-time% u0 u3 L5 J  n
;;
当前发生交易的turtle的交易时间, U% V1 S' k* j# d% n
appraise-give$ b; o& {( g3 b: B
;;
当前发生交易时给出的评价
/ K9 `2 ]: b3 }. {2 gappraise-receive* n4 Z: z# |' `- a& r4 f
;;
当前发生交易时收到的评价
2 ^% S- u$ Z# q, ?. l( O$ Yappraise-time& r1 W6 [1 a# v8 c$ L2 Y
;;
当前发生交易时的评价时间
' y& w0 D2 \8 k% Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* @* g& [4 c' H' [8 T
trade-times-total
8 G0 l. l% ]' b;;
与当前turtle的交易总次数
9 s4 ?/ s9 k( W4 b$ o% k" Ttrade-money-total! N8 W$ ~$ g  M7 H' O
;;
与当前turtle的交易总金额
" K4 K* p7 L+ [" O( c! G5 ulocal-reputation
1 y! s, }9 W$ Q6 ~0 Uglobal-reputation
' a" N, ]. w" ?) xcredibility2 E7 x: K" Y8 X' _
;;
评价可信度,每次交易后都需要更新
5 ~" s+ ?6 P8 V6 ncredibility-all
( a  Q& A+ ]5 S. w;;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) B, T' n+ l$ b8 G2 J$ U) ~
8 k5 w3 y, A; {
;;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
8 h8 a6 c6 z, a% [! |+ [credibility-one
% U9 ~: A, |7 j: J. Q' f. c;;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& F/ r9 K( Z1 T* @, c% Q4 _& `/ w
global-proportion
7 ^5 @$ p, W# k( ~# _* u4 j5 Q: G1 Tcustomer
# r/ c6 B4 V1 ]6 Gcustomer-no
1 X6 e6 I* M  d3 Y9 vtrust-ok/ g1 @2 X# T2 E' a( Q) A+ A
trade-record-one-len;;trade-record-one的长度$ u2 |) j( p. ?* F+ W( Y  J
]/ k) t0 j! X2 g9 @7 @9 I

6 `# T* p7 B' A& m2 X: x;;setup procedure* S, {  m2 @- k% V8 _& u4 E$ z; B$ i2 a
3 ]* ?6 m7 f- M: d
to setup: @; [0 f- T7 J( D9 S* w7 w
: w- V/ _# t# [, B
ca

; W3 C6 R6 ?4 t) D! x5 h: x& p
3 M- |9 _% J6 B5 h2 vinitialize-settings
! h- E" C$ u6 v8 j
+ X& ]8 I0 z$ @8 T; j
crt people [setup-turtles]

* s* H* F; d+ C" L9 @: P! q4 F) t4 o) }
reset-timer

; t& u, \- ~0 H: x" f) i$ N, m- w- l4 n3 g: q4 |
poll-class
% A5 K- _4 x8 J1 f7 i" z2 l

  q3 [7 Y& w/ h0 Wsetup-plots
9 o5 k+ s8 h  ~' G+ g
; s/ R5 U3 G" w  o- T- T
do-plots

2 O9 v* c& E5 H1 Rend
8 |# J% Y+ S& S: w$ r& y3 c0 t2 D# u# p. a- k
to initialize-settings. M$ V7 p. P. b$ ]: G8 n* D
1 [! E9 W; B5 c; y$ U/ |& [! b7 o
set global-reputation-list []
1 s! g: ?# b7 J4 [! w

/ a3 h' d% D( N- S- Zset credibility-list n-values people [0.5]

) G3 k7 V" ^  e' ~/ a/ v3 ~! x  }, O. i0 m" |: B# C9 P+ U1 W# K. [
set honest-service 0

, @: g- m& b5 c% e# s$ P+ l
* ?, h- {, ~& Z2 `set unhonest-service 0
" V0 M- H6 w0 m2 d, O
  @5 w8 E( Y5 `" Q, r0 m
set oscillation 0

7 E; t! y6 C# V/ Q! Z& k0 H2 m5 z
' a/ G0 _1 x( [3 \  M7 H$ ?( rset rand-dynamic 0

# K. K6 q4 b. L( Xend
" Z. Q' `$ y; j1 ~
9 h" [: M6 w5 N2 X6 W. bto setup-turtles - f! c  g4 r3 w4 ^2 u
set shape "person"6 W) b; h$ Y6 U" D, Z, J, G9 y+ Y
setxy random-xcor random-ycor7 R5 d7 I) F" e; [2 e
set trade-record-one []! Z, y! w! t% H8 B9 w  ^- e: S
6 W6 x0 {  g/ l8 i1 {+ L; P1 b
set trade-record-all n-values people [(list (? + 1) 0 0)]
" S6 a  k7 h' ^3 `- P

% o& I0 ]4 K8 [set trade-record-current []
$ K+ ]. M  s5 K6 t9 Uset credibility-receive []
" H# i' Y3 X2 q& M& a2 Sset local-reputation 0.5
' T5 T" f! h" Wset neighbor-total 0
) n: M: z( t$ q; C5 d1 hset trade-times-total 0
% q, A) Q6 n! \/ j' L3 Gset trade-money-total 0
7 N4 r7 d3 i% ?* Wset customer nobody
* `. q4 s/ Z8 O2 [set credibility-all n-values people [creat-credibility]% Z: }+ ]$ a( @# v, C. N! x, J) g
set credibility n-values people [-1]
4 a) w5 {* n# y3 z: }& Rget-color
; q* `( }6 y5 C3 w& ?2 F0 N
# ]7 m% K, H; z* B  `
end, R- W- U! p- ^" n! j% a

( a8 ?; ^1 f+ Wto-report creat-credibility4 \& G. k. a) h! x  i
report n-values people [0.5]& d& H0 K. _. m6 \. I
end* n( `+ K/ M! i8 j
& R: X! `3 y- H' b) N) W
to setup-plots
. D. F' D5 Z6 Q5 `: i: `- \8 G2 o* c8 l! V  x' E: [
set xmax 30
+ j1 c6 F' m  ]1 ]" r. F3 n! i4 [
' |. q( S2 l7 u( E
set ymax 1.0

$ b% E2 F' w$ B% L* X+ s7 V  z* X" W/ x0 @5 U6 S$ F. q0 T
clear-all-plots
" V6 V% `7 k6 H; i+ ^/ G8 S
, N/ h+ u* k! ?, g: r* d
setup-plot1

; o( X% n$ r& z# f  X1 k/ t# y3 r! P+ k4 e8 ^
setup-plot2
$ Q& |! L8 _2 f( o3 ?2 l- L% D

+ |8 V# J( a2 F: V  Q, Asetup-plot3

1 j( \  k; v& q( d7 m; `. B9 Pend
. B+ T6 a9 I, N( i3 m4 T) Q+ s1 K
;;run time procedures
. r6 f4 s9 C$ t; f" ^" t
; T; O6 K6 S) e* G- l" S* D1 rto go
5 }0 m2 b0 w- R7 K3 {
" w9 \; L- G- P8 d0 I, x# U" task turtles [do-business]

4 Y/ ~: w7 Z: O+ gend
/ ]6 Z' s! ?& ^  t! r
4 |; t- \! z, U- Rto do-business , {2 P# R7 S% l# j5 h/ p" d6 X

# v* p: g' V" q: k7 w% L6 {" E; k' G) P% n$ J( j) c
rt random 360

% S# g' d, w& b) V* T' y/ j4 A4 r- T; D8 ~2 e3 i7 z9 s8 }
fd 1
. u3 _) n) p$ b
6 y% E( U6 i0 a
ifelse(other turtles-here != nobody)[

# w) f- Y: n- Z
+ R. S: b/ Z5 V! C' \& Z: Iset customer one-of other turtles-here
1 @$ F( V. s2 G) m. h% q7 L  @" U
3 }. g0 I: ]' u( Y2 u' A0 w
;; set [customer] of customer myself

  D4 f7 W5 w1 n  z: Y7 t# M, P. {3 M
set [trade-record-one] of self item (([who] of customer) - 1)& \. c9 H6 t2 k4 e0 o% @
[trade-record-all]of self
' q+ h  q' e) D" M: ~, b. t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 K8 `: Y6 x, j
, z' X+ I6 N) ^& i  Uset [trade-record-one] of customer item (([who] of self) - 1)3 Z0 f% d' ^0 T/ Y( _4 p
[trade-record-all]of customer

6 T0 j- S( y+ D7 [
4 v1 ~% ]! y* }- Eset [trade-record-one-len] of self length [trade-record-one] of self
  g  q0 Y! A) ~: D7 B9 g* w+ T

7 V2 p, Q7 H+ d5 C2 O( p, sset trade-record-current( list (timer) (random money-upper-limit))

! o( ]; W7 ?' v0 L0 k( _0 J9 F4 v; K; g$ a4 t4 q; [3 j
ask self [do-trust]
4 t* K5 S0 A( @% |7 Z1 S( Z! V;;
先求ij的信任度
3 @5 a& @0 d* V! H% K2 {
1 a# b& k- u5 K1 g- O8 iif ([trust-ok] of self)
' a# o; B3 x3 k7 N7 m;;
根据ij的信任度来决定是否与j进行交易[/ f, x0 @% i1 R/ d
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 J! y! j+ P2 j" u" K2 D% l) N8 A  R
[
0 d0 S% U5 f/ }/ w8 r. V; W5 k
; V' n+ `+ c. i2 n6 }" N
do-trade

8 W5 V5 C4 j) o) ]! L0 U" M
5 c% Y3 ]( u7 e; |  Jupdate-credibility-ijl

5 p" |: b  \! g/ m, b" }
4 ?* ^2 L6 M6 Lupdate-credibility-list, X; |% @2 [, D& w
) l1 a* _" L; R* _- {
( h* N5 J5 U4 t/ t
update-global-reputation-list

  L0 y  p2 B- r( h3 |
/ R& M9 T) B" S$ j  A9 Rpoll-class
  ~/ a  k4 h5 K3 d0 o( j
# H/ h8 H6 E% P/ o& g+ x
get-color
' q' Z2 y- P' K3 z
8 d% M( g+ W/ c  `
]]
! x: x+ b% V) N$ Z2 d# k
6 K: n8 a: y! W9 ^/ y) l9 u- z& E;;
如果所得的信任度满足条件,则进行交易
% l( d8 S  A: O  p3 D0 N0 I% w+ Z# W* g7 P8 W8 W" ^. v: r. o# _
[
4 @- v( A- k! P' f6 ]2 v$ [
9 ?9 C. O) Z: |% G& S. F! |3 l& M
rt random 360
3 m* _# `5 y- j

% g2 A2 H& `+ _: ofd 1
" ^0 E! A1 l+ Y  u- h+ d
4 I1 F" E7 _9 B+ ^$ _
]

1 a" B0 D) u5 \7 F5 |& A( \1 J% `
( ?% {; T  Q6 Wend

+ i3 C* X5 r$ C5 J" s( G3 M. o6 s- |% |. S* q8 ~/ \* C9 {
to do-trust
" H' Z9 Z4 W: \set trust-ok False& c% j3 ~2 Z: l0 ^* c: f+ b
$ [0 R0 i- p* R4 D9 W3 a
4 r' W. e" x3 y- x+ r1 s/ ?; ?
let max-trade-times 0
* ?& K: Y& i3 k5 i) g/ k3 d2 bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 \+ C" x1 n* `0 E! Rlet max-trade-money 0
. u$ B0 \3 k1 R7 t) `0 f8 nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- y2 O+ I& n' `8 q9 V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 n0 X; t( H2 U1 [0 K( R: T: |" H5 [; Y: @# H% T7 V

: ]- N7 f; Z: x: V1 ?  ?get-global-proportion
% Q2 J- {! ?0 X/ Plet trust-value
7 L9 M9 V6 I0 Glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
2 h1 P) ~* Q3 N( V: ]) g' z, ^
if(trust-value > trade-trust-value)9 t' Z4 K) m: K% [/ P, T& X
[set trust-ok true]
' G3 R8 z, g( ^- \+ ?0 G0 Gend" }8 o, \, ^3 ^/ }: H6 u# F0 p
; y% U* ?, p) m. O
to get-global-proportion
5 k' z5 v8 o1 O+ c6 P9 o7 \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 B  D' ~: x" t" A3 [  _[set global-proportion 0]/ n2 J3 O7 H- L6 l( d& m
[let i 0
+ j. u$ M) Y& ?let sum-money 0
$ U9 V( d* T6 D# Pwhile[ i < people]) e+ Z2 G6 m8 M, i: A: W+ ]9 Q
[
2 z0 ]. q% ?, G. B: c3 P- j, _$ xif( length (item i
! ?  O4 q0 G' h4 X; I. q( d4 Z[trade-record-all] of customer) > 3 )
) C3 z# H4 N1 ~. f
[
- G. A* b$ O1 k& i1 w: {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 n, z) o6 C, Z) S8 y; b
]
0 C0 p- P0 q3 X# F]
: _+ Z& V# {; y! ]! e4 a) klet j 0
" w0 |3 ~- T, g, W2 A% ^  glet note 09 o" g  |& W+ g
while[ j < people]* S2 g& U, c  ^! {/ O9 B( Z
[5 k2 t* G* F6 ^6 j
if( length (item i% i. K; C) S' h4 y: A# A" f: k
[trade-record-all] of customer) > 3 )
- N) ^1 L4 ^+ `; g* |' o/ [
[1 [! o4 P7 \  F/ u
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! |" v7 G; w, V; o" w; n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 h/ m: v9 o+ Z/ c0 U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! J2 c" ^. C1 s: A: X]
6 ]; ^0 J- x$ H, `7 o: y]
9 l* Z$ e5 X2 r- Aset global-proportion note
4 R' Y, m( W. ~+ ~* _. {]* I7 @! u" T/ K
end
5 e: |/ a, [8 k7 B0 U6 `  ?& i2 N0 V2 K9 x
to do-trade
1 K9 Y! S" A, H; u* T;;
这个过程实际上是给双方作出评价的过程
( C; I& i2 Z; c( U4 i: i. k3 w6 J- g" `. Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 g. F: o" A9 s4 r- S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 E8 x3 H! d9 A* _9 z7 _( \4 f
set trade-record-current lput(timer) trade-record-current
/ R  I5 S" ^0 v) A, G; O! I;;
评价时间
) I  Y: B- w/ e) p0 hask myself [% n# q1 d& ~2 I9 i% J9 Z
update-local-reputation5 f* D2 @- {2 w! F' n6 z
set trade-record-current lput([local-reputation] of myself) trade-record-current
, t3 c3 a' o' D3 N/ N$ t]
/ L: z7 V/ O9 Eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ u- n' j1 b* E1 L5 \
;;
将此次交易的记录加入到trade-record-one7 `0 K7 ~7 l+ A$ K( [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: g' w  G) v3 N& E6 }let note (item 2 trade-record-current )# h- ^) f$ e; p
set trade-record-current
) n% Q  t7 A; v5 z- |% K- _3 m% J4 C(replace-item 2 trade-record-current (item 3 trade-record-current))
% x0 b* t! k* ?( [$ g
set trade-record-current
: @( G3 o% E* t3 A(replace-item 3 trade-record-current note)5 E+ ?# s8 u& v
  ?: s9 ^5 l! y- G: _- h
/ p! Y! @& B% t/ G" N  w
ask customer [
; t' e& a2 [9 T3 l, [* g2 rupdate-local-reputation7 `, R1 I6 `; @. `
set trade-record-current
* ], H" d# A1 g1 q% v7 T- j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. N  D! \6 T& [' x, G5 T$ A
]. t8 E# [5 Q( K! @  v
4 G: |& }+ P# N8 `; K

1 j% ?, |% f! Z& o2 _4 Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* H4 ~: @2 ~$ \, v

' `5 V. h) L$ n3 t% G: wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# u" v+ c$ m7 j
;;
将此次交易的记录加入到customertrade-record-all
) f% ^3 j" `" R9 Rend
( I/ L& b4 y! I: Z! [( y) L5 U1 j6 ^
& l1 t9 D) o# A3 M3 x: m. ~& H  oto update-local-reputation
% A& O) G1 F' W& ?$ L0 \' d. M0 nset [trade-record-one-len] of myself length [trade-record-one] of myself1 _1 m1 Q! g( k
, N* \, g, K) r0 T* h; b7 \, d" Z

; M4 A$ C2 q5 S5 b4 O;;if [trade-record-one-len] of myself > 3

  ?+ _. [/ ^8 K2 e0 Lupdate-neighbor-total
+ A0 z3 b% I' d: E" u& L;;
更新邻居节点的数目,在此进行
$ ?- f6 |+ N5 L/ \let i 3
: j. x; s% h$ W6 k  I& ylet sum-time 0; v: S5 u# r0 W3 f* ^" K, e6 J5 \! ?; |
while[i < [trade-record-one-len] of myself]
3 `: j& r5 ]4 w$ E[
& C% z' g7 g- j, Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; K0 u1 Y9 ~3 G6 tset i
7 s8 {# U4 w9 b9 R( i + 1)
' u) V. ], g! t9 d
]( r: A" |1 M6 i+ w
let j 3
" e( x$ u2 v' j$ K5 ulet sum-money 0
' B5 ?8 C0 p! t' D" kwhile[j < [trade-record-one-len] of myself]/ @+ Q8 l: h- l! i
[$ k. F8 k8 Y0 s
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
  |1 r  k+ ^- h4 k( J/ m9 u' ^8 Jset j
3 Z3 G) i3 q: ]; [, w. [2 @8 O( j + 1)

0 k1 z5 \& ?2 P3 B1 M* i]
) U) T( S8 D6 qlet k 3; V3 E' H5 h' a7 C0 ?9 S
let power 08 ~: @' |/ B, L) g# W6 @; m; x% S
let local 0
; L; }) \: M4 H. {2 Twhile [k <[trade-record-one-len] of myself]
; p* J* |; x: Z4 X[
9 K; [# ^) X* @0 E- [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) 8 ~0 j+ f1 C' W! F6 K
set k (k + 1); B5 I% j: X/ S! L2 ?
]
- J7 w0 l& ~* P9 x' d; X# tset [local-reputation] of myself (local)
0 y: e4 j4 L$ s9 B6 ~2 @end* @" b5 t3 b4 F- J. P) e

& z( F" V# z, |5 I: S5 x$ Z7 [to update-neighbor-total
( D5 R: T( ?* S% H1 ]  _+ W0 J# X
/ P$ j; X1 Z; w/ p4 B& V8 yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% b, s9 O: s. F2 v
2 t) I# K' ^% A* }9 ]3 c9 h% A$ x
- _5 x3 q( @" S8 s% O/ @% A; V4 D% A
end0 K5 k" q$ O0 a1 ~/ o

4 y% {, x. u7 _# ]6 z. G" x7 Qto update-credibility-ijl
# Z# S; C* H# T
8 G  e0 u, B& A  d& d;;
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。3 d" X3 _" O2 y* t$ Q
let l 0
5 ~" s7 b3 \7 t6 d/ m2 Awhile[ l < people ]) x, k0 m3 w, q$ ]  c
;;
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3 n5 h$ x$ r7 S
[
" `6 B7 `: ?, r* ?* |3 ~& llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 g. }; t5 t/ A8 B0 m6 u# l0 sif (trade-record-one-j-l-len > 3)
" L+ {& d2 F. v. M[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
4 x! G- D1 Y. E* Alet i 3
  C# {/ F, Q* Klet sum-time 04 F, s9 k+ {: P7 E( U0 T6 O# V/ |
while[i < trade-record-one-len]
  O7 ~* Y- }+ ~- k: c; ^- {9 Q2 I[
) B# y/ E2 P* n5 b; C8 O' U- Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 M1 r4 ?, Q, D) G) v, Z8 n
set i& g6 [3 ~0 U8 a$ i9 |* {
( i + 1)
0 b5 Q% y& Z" }9 ^  h
]) j8 V# C# X2 K/ |& z; O
let credibility-i-j-l 0
' N5 u9 u9 }" g; e;;i
评价(jjl的评价)0 j+ n/ M6 ]8 k3 V, v! b
let j 3
0 X$ P8 B0 ?  ]; y" i2 Blet k 49 }( r$ Z( J6 u% r: a- {) K7 T- P
while[j < trade-record-one-len]
! |1 f, \7 r: }4 C8 H# x% o; K[
# Y8 {0 K/ H2 q7 X6 g2 owhile [((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# }# F, S, y1 M/ b" l! S
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)$ O9 C8 ]" O, c* [, Y) G( r* |+ b
set j
) r( x5 H  C3 S7 s# e! l( Q( j + 1)

/ \. A* \  Y6 c8 R7 y) w4 I]
( U4 x* K0 A& ]' k- G' Eset [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 ))1 G7 A2 U( e7 F1 [6 u2 z
; s& ?8 R- Q/ I; o& w6 L

( ~) Y9 Y0 M% c" N; f( {' glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) C& G0 Z3 y) u9 M;;
及时更新il的评价质量的评价
- a! ]+ ]# a4 y# H+ @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 j8 a7 o6 a, O4 }/ {. i7 Q
set l (l + 1)  c2 }* Z8 j* W& w* Q" {
]7 \& X" h/ c- w# \; c2 e" o& t
end; N# [1 H% W3 v! x
' r7 B, X8 G  x3 B
to update-credibility-list
3 W% R% I; V: s5 [' q, K/ Xlet i 0! ]3 r( D( z5 g/ q, n8 t, q) S3 @
while[i < people]" A" @: z' o* K4 O0 L( i4 @" F8 f7 A  r- \
[
# L- J6 p" Y5 E0 `6 A  @! klet j 0  |$ w  m) s1 F8 G: Q0 n9 J
let note 0
" s- c( U8 X* ]- Mlet k 06 j) l9 W( E/ Z' b- P  F
;;
计作出过评价的邻居节点的数目
5 u! g( _3 R/ `# S  q  twhile[j < people]* H$ }& {2 \; l4 R% w, h
[
( P/ u* i9 w* l7 R- j: E/ pif (item j( [credibility] of turtle (i + 1)) != -1)
* D1 s4 `8 \+ M; e! T- Q;;
判断是否给本turtle的评价质量做出过评价的节点
" J7 H1 h$ N& I7 S" o' Y0 @' L[set note (note + item j ([credibility]of turtle (i + 1))); z+ D1 O  T1 {8 T+ [! Y. x
;;*(exp (-(people - 2)))/(people - 2))]

5 r  B* i9 A- b9 y- p; b4 Bset k (k + 1)
( h/ `3 e& w% c]! m8 U8 K! h; [* R* ?
set j (j + 1)1 F5 h. ~- x$ W1 p
]
9 r1 h. T) M/ X0 kset note (note *(exp (- (1 / k)))/ k)
3 V" m% \5 E, l- |5 h8 T, o1 b1 t$ Pset credibility-list (replace-item i credibility-list note)
( E  d+ a6 ?  A( uset i (i + 1)* U. l/ H$ E! n5 p; D$ ?: O- R- A
]
& D3 w5 v, ?- ~end
4 s( L; A& \" A3 Y3 |; P7 o3 c" X# e: E& g9 L/ f0 \; r
to update-global-reputation-list
! v" x1 {& _- f% W) G$ _0 H, flet j 0
  g2 h7 R$ H7 y( l- c/ Qwhile[j < people]
0 g4 ?5 r* a) ?; H. N- _[; K# U+ V& ?" _; g
let new 0: H- U7 K  s* b
;;
暂存新的一个全局声誉
5 S! A% k. E/ W& ulet i 0
, f5 j! ?$ C& A' Y+ I; r8 I1 d3 P, olet sum-money 0
) P: X1 @; h4 Q. E  qlet credibility-money 0
/ q; e6 c# t0 X, E8 f  C5 Q8 c1 |while [i < people]
' c; l7 f, @# J- p4 ~1 @" A2 o5 o[
9 V0 ]$ s: x8 Q, h+ Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) Z0 f) k0 G% U1 e0 D0 d; kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& x# E% G8 q3 g$ Z. T8 u% |8 K! t% n! Rset i (i + 1)# D" |3 |( N/ y- e3 x
]/ K" w+ \* D7 L+ |7 {4 H& A
let k 0
* ?) n4 B9 n$ b5 L' q: {let new1 0" j& @) \: O5 M. n
while [k < people]
7 b" O4 U/ \8 c- o[) d7 t7 H/ n) n1 _( m
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)
4 t9 B/ I. r6 ^! eset k (k + 1)
2 {- ]7 V) o4 q]! y! X1 ~% b3 w$ i4 i$ E" O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( u) y. d1 H3 _9 @8 ], q% {
set global-reputation-list (replace-item j global-reputation-list new)
' s- P, h$ K9 {+ bset j (j + 1)
! V1 q2 _% t1 s( e! }  p. \]
+ f, [4 [$ f" ?/ Qend. c4 g9 ]* V& L( Y& J) [! \" \: @
" j# Q; l# e( n8 |. J

! C$ A/ V* d8 U7 c) O+ m% g- v- Z
to get-color
& \2 p3 x9 o5 g9 _0 \0 x1 D2 D2 h( o* s' V
set color blue
' I6 M$ f% A+ \8 E# ]/ y* c: r
end( R9 m& ^! `  S3 Z8 n3 O2 l% I
5 P) v$ X& ?/ d7 o$ f4 ?3 ^' r+ f1 ?
to poll-class, P+ S+ |' v% _  O& K
end# ^- d$ `/ F* A) ^) x
  u& |+ I: P7 B% c, T
to setup-plot1# f: j2 s7 w& C$ E- M2 w
) C  i8 ]( B& g+ d8 {  I4 A* T* M
set-current-plot "Trends-of-Local-reputation"

& i/ C$ ]  w, e: V
3 A% k* L5 m5 `2 W& X( a( yset-plot-x-range 0 xmax
( h( d: U( H  \

4 q. A. n1 [1 {& W# x& oset-plot-y-range 0.0 ymax

+ a7 p3 m( [' `! D. ?! Y' hend! |1 Q! G+ |3 d3 J1 I* \
( Z. \4 Z7 C8 i. d' R% X1 y
to setup-plot2: X1 b& u- f' u
* t' Y- Y: o( _+ b
set-current-plot "Trends-of-global-reputation"

" I& l+ Q% s7 ]$ J8 f
: g" T0 k8 J! u1 _( j3 z: n1 zset-plot-x-range 0 xmax

8 p2 w, B: H  \' p$ O' w. P8 e# }. h2 E, Z8 r; m: s5 W
set-plot-y-range 0.0 ymax
6 K2 K' ?% i0 c
end
4 p( }. e1 Z- c! n4 l4 I
  X6 K, b) L) t! D5 |- Lto setup-plot3
7 _2 A0 W1 r/ B0 z# l  r, ^
9 s; O$ o% D& w$ K3 H1 gset-current-plot "Trends-of-credibility"

: Y+ K" _9 }2 K' g6 s: f- O7 R' p; [" d) y0 L9 J
set-plot-x-range 0 xmax

9 p) N& F( k% \) x  h( i1 S* ?$ ?0 R$ U2 @& @- W& K) G
set-plot-y-range 0.0 ymax

* d# ^/ J) C9 i, ^+ Qend
- ?3 v5 ?+ ]- n0 x* R+ ?2 P6 Q3 d* w" G( B0 v
to do-plots
# ~0 i% m$ L0 D7 c7 Qset-current-plot "Trends-of-Local-reputation"& E& ^  d. |( V7 @
set-current-plot-pen "Honest service"( \$ ^7 F( \8 O: X* n& Q/ C6 D
end
) w1 X% z" N0 x* ~! K" s8 t
0 s# {$ \9 s6 ^2 ^[ 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.3 E! J  q- E) r2 w( x4 T0 Y

' f/ S, _# T. ~; ^4 A! {% x! n2 l% K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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